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Results in Journal Buletin Ilmiah Sarjana Teknik Elektro: 43

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, Amalia Herlina, Safrudin Safrudin
Buletin Ilmiah Sarjana Teknik Elektro, Volume 3, pp 50-61; doi:10.12928/biste.v3i1.2829

Abstract:
It has been designed and built a device to transfer the load from the PLN to the generator called the Automatic Transfer Switch (ATS) and at the same time able to turn on the generator automatically called Automatic Main Falure (AMF). This tool is in the form of a prototype that has successfully fulfilled its function so that it can be applied for domestic or industrial purposes. This tool is also economically valuable, because the price of its production is able to compete with similar products in the market, but by having more capabilities in the form of fuel detection and lubrication. With the results of the study covering the duration of the network load outages during the process of switching the electricity grid from PLN to the generator on average 3.5 seconds, and 0 seconds (instantaneous) during the process of switching the electricity grid from the generator to PLN, the ATS-AMF that is created automatically is able to light Genset engine when PLN dies and turns off the Genset engine when PLN starts again after it goes out, and the ATS-AMF that is made automatically is able to give a warning (alert) to the engine operator when Gasoline or Oil will run out at the level of 20% of the capacity of Gasoline or Oil.
Wahyuni Eka Sari, Eko Junirianto, Geofani Fatur Perdana
Buletin Ilmiah Sarjana Teknik Elektro, Volume 3, pp 72-81; doi:10.12928/biste.v3i1.3214

Abstract:
The problem faced by farmers in Samarinda is the difficulties to know the condition of the chili plants when they are away from home or from the garden. Often times the farmer commutes from home to the garden just to monitor the condition of the plants, which reduces work effectiveness and takes a long time. Therefore, in this study a tool was made to measure soil moisture, temperature and soil pH based on the Internet of Things. The process of monitoring soil pH, soil moisture, and air temperature in chili plants using soil pH sensors, soil moisture sensors, and soil temperature sensors as well as Wemos / Arduino for data processing and sending analog data to the ANTARES platform. The result of this research is that soil condition data can be sent and read in real time through the ANTARES web application. Tool testing was carried out at 30 different locations in the city of Samarinda.
Firda Andriyan Andriyan, Wahyu Sapto Aji
Buletin Ilmiah Sarjana Teknik Elektro, Volume 3, pp 41-49; doi:10.12928/biste.v3i1.1751

Abstract:
One of the uses of this sound technology is controlling the speed of a DC motor. Sound in the form of a spectrum signal can be converted to digital. Digital signals can be used as a microcontroller input to adjust the speed of a DC motor using the PWM (pulse width modulation) method. The design of the tool uses the V3 voice recognition module to convert the voice into digital. A microcontroller as a voice data processor by changing the input voltage to a DC motor. Voice command to set DC motor speed. Based on the results of tests carried out in good environmental conditions, 90% of voice commands can be recognized. Meanwhile, in bad environmental conditions by 50%. Manual measurement is done by entering the input voltage from 1 volt to 10 volts. The results of the comparison show that the speed is almost the same, namely 2727 rpm for manual calculation and 2915 rpm for the whole tool. This difference occurs because the test when manually inputting the tension is not very accurate. It can be concluded that the tool is working properly and as desired. If the environmental conditions are bad only 50% can be recognized from 30 voice commands, then there is a difference in voice intonation during the training process.
Rio Widodo, Imam Riadi
Buletin Ilmiah Sarjana Teknik Elektro, Volume 3, pp 21-30; doi:10.12928/biste.v3i1.1752

Abstract:
The openness of access to information raises various problems, including maintaining the validity and integrity of data, so a network security system is needed that can deal with potential threats that can occur quickly and accurately by utilizing an IDS (intrusion detection system). One of the IDS tools that are often used is Snort which works in real-time to monitor and detect the ongoing network by providing warnings and information on potential threats in the form of DoS attacks. DoS attacks run to exhaust the packet path by requesting packets to a target in large and continuous ways which results in increased usage of CPU (central processing unit), memory, and ethernet or WiFi networks. The snort IDS implementation can help provide accurate information on network security that you want to monitor because every communication that takes place in a network, every event that occurs and potential attacks that can paralyze the internet network are monitored by snort.
Gema Ridho Wicaksono, Riky Dwi Puriyanto
Buletin Ilmiah Sarjana Teknik Elektro, Volume 3, pp 1-9; doi:10.12928/biste.v3i1.1109

Abstract:
Automatic control has been developed in various fields, one of which is paint quality control. Paint quality can be controlled from various categories, including paint quality based on its viscosity. Therefore, we need a system that can control the viscosity of the paint. The paint viscosity control system uses the PLC OMRON CP1E-NA20DRA with a heater as a heat source, and the LM35DZ sensor as a temperature reading sensor, and the RPM reading is used to calculate the viscosity value. The programming language used is the ladder diagram on the CX-Programmer. This system uses the PID (Proportional, Integral, and Derivative) Algorithm so that temperature control can be set at 30ºC so as not to affect the viscosity of the paint. In addition, this prototype provides two PID tuning options, namely manual and auto-tuning. Researchers get the results that a good temperature control system response has a PB value = 0.2%; Ti = 452.5s and TD = 66.6s. and control the accuracy level of paint viscosity control of 67.82%.
Herry Setyo Nugroho, Tole Sutikno
Buletin Ilmiah Sarjana Teknik Elektro, Volume 3, pp 31-40; doi:10.12928/biste.v3i1.1760

Abstract:
The development of technology in the smartphone sector is currently developing very rapidly which results in smartphones becoming one of the primary needs. Judging from the ability of a smartphone that is able to run various applications, one of which is to use it as a control tool. Through this research, a fire extinguisher wheeled robot prototype will be built with the control of an Android smartphone based on the Arduino Mega 2560 via Bluetooth wireless communication. The results showed that the robot can function properly controlled via an Android smartphone with a maximum distance of 10 meters, the robot is able to respond and extinguish the fire with a maximum range of 60 cm, and the robot is able to know the distance of the barrier around it (in cm) with an accuracy of up to 97%. To extinguish the fire the robot can move with an average speed of movement of the robot of 22.2 seconds per extinguishing phase.
Muhammad Darso, Anton Yudhana
Buletin Ilmiah Sarjana Teknik Elektro, Volume 3, pp 62-71; doi:10.12928/biste.v3i1.3071

Abstract:
This study aims to make an application for measuring nitrogen requirements in rice leaves based on an android application. The method used is the On Touch Motion Event. The onTouch method will be used when a touch will be sent to be displayed, then MotionEvent contains information about the touch made. System testing is carried out to display images using the Open Camera button using a smartphone camera, after that look for the RGB value then convert it to the BWD scale. This research has succeeded in building an application that can determine nitrogen levels in rice leaves through leaf color and provide recommendations for the amount of fertilization according to the desired results. The results of tests that have been carried out on 6 samples of rice leaves with 60 samples of RGB value data produce an accuracy rate of using the application of 78.33% and the remaining 21.66% is an error value. And how to calculate the land area, the results obtained from the need for urea per plant in 1 ha are 120 kg, where the BWD table shows the value of leaf color on a scale of 2-3 and requires a urea measurement of 100 which is estimated to get a yield rate of 6 t / ha.
Ilhamsyah Muhammad Nurdin, Abdul Fadlil
Buletin Ilmiah Sarjana Teknik Elektro, Volume 3, pp 10-20; doi:10.12928/biste.v3i1.1608

Abstract:
Eye sight is sometimes deceptive, especially in determining the quality of a canned food, so it is necessary to use technology that resembles human visual observation, namely in the form of an application. The process to detect the quality of canned food uses image processing methods, especially thresholding, which is then designed so that the application is able to determine the quality of canned food with the help of the MATLAB GUI which detects and then sends it from making the MATLAB GUI on the Laptop to Android using FTP (File Transfer Protocol). At the end of the process, it is marked with known good and bad quality of canned food with an android application that has been specially designed with an accuracy level of 84% with a thresholding value of 70.
Matlubul Khairi
Buletin Ilmiah Sarjana Teknik Elektro, Volume 2, pp 153-162; doi:10.12928/biste.v2i3.3343

Abstract:
Implementation of Field Work Practices (PKL) is an effort that can be made by SMK to continue to produce graduates who can compete in the business world and the industrial world (DU / DI). The government policy regarding learning at / from home during the Coronavirus Disease 2019 (COVID-19) pandemic has an impact on the reporting process at SMKN 2 Kraksaan. This study aims to build a report guidance system using server side-based web technology. This system was built using a waterfall model and PHP (PHP Hypertext Prepocessor) programming. System design tools used are Flowmap Diagrams, Data Flow Diagrams, and Entity Relationship Diagrams. The black box test results show that the output of the system is in line with expectations. User response to the system using a questionnaire resulted in a feasibility percentage of 83.6% with a very feasible category interpretation. It can be concluded from the test results that the Field Work Practices report guidance system is in accordance with user needs and is very suitable for use.
Rochmat Diantoro, Wahyu Sapto Aji
Buletin Ilmiah Sarjana Teknik Elektro, Volume 2, pp 119-129; doi:10.12928/biste.v2i3.2623

Abstract:
Abu Robocon 2018 which was held in Vietnam with the theme "nem con" which means throwing a berkah ball. The Indonesia Abu Robot Contest 2018 made a throwing robot design with different pole height. The parameter that must be achieved is the optimization of the throwing mechanical drive. The thrower mechanics in the KRAI robot can use pneumatically by determining the angle of the robotic thrower. The mechanical tilt angle determines the throwing distance of the berkah ball. To find out the height of this research berkah ball will use python to display the parabolic motion. Based on the results of the study obtained the first test results with a throwing angle of 0 ˚-115 ˚ get an average value of a distance of 7.37 m, height 273.4 Cm, time 1.42 s and speed of 5.152 m / s. The results of the two test with a throwing angle of 0 ˚-95˚ obtained an average distance of 8.78 m, height 352.4 Cm, time 1.63 s and speed 5.381 m / s. It can be concluded that the mechanical tilt angle is leaned forward, the pitching results will be lower. When the angle of inclination is tilted backwards the berkah ball will soar more.
Muhammad Mistu Adi Putra, Amalia Herlina
Buletin Ilmiah Sarjana Teknik Elektro, Volume 2, pp 130-136; doi:10.12928/biste.v2i3.2707

Abstract:
The conventional method of drying coffee beans that depend on sunlight (drying) has a number of drawbacks, one of which is that the drying productivity takes a long time. In general, coffee drying is carried out until it reaches a moisture content of 12.5% to achieve a quality bean standard. Mathematically, the moisture content can be assessed by paying attention to the initial weight of the coffee beans and the final weight of the coffee beans. So that the use of the Load Cell sensor to read the depreciation value of the coffee bean weight on a coffee dryer powered by Hybrid Collector and LPG coffee beans. Research that has been carried out during 200 minutes of drying in a coffee dryer, the Load Cell sensor is able to read the depreciation value of the coffee bean weight by 114 grams from the initial weight of 978 grams. Therefore, it can be concluded that the final moisture content of coffee beans has reached 12.01% and the final weight of coffee beans is 864 grams.
Ponco Sukaswanto, Abdul Fadlil
Buletin Ilmiah Sarjana Teknik Elektro, Volume 2, pp 103-110; doi:10.12928/biste.v2i3.2695

Abstract:
This research proposes a wireless communication between two dancer robots using zigbee to overcome the differences in movement between the robots in order to dance in harmony. The robotic music processor uses Audio Analyzer V2.0 which functions to get 7 frequency values for the music being played. The frequency will be processed by Arduino to determine the condition of the music on and off which will be sent to each robot via the XBee S2C module using the Zigbee method, namely with 1 master and 2 routers. The result is that the music processing system becomes more robust because it uses the Zigbee method. By using the Zigbee method, robot 1 and robot 2 can also communicate with each other because with this method, fellow routers can exchange data. The robot produced by this study can already distinguish the conditions when music is playing or muted, and between robot 1 and robot 2 can communicate with each other. Communication between robots functions so that when one of the robots is late in getting data, the other robots will wait until the late robot completes its movements so that robot 1 and robot 2 are back in sync.
Buletin Ilmiah Sarjana Teknik Elektro, Volume 2, pp 145-152; doi:10.12928/biste.v2i3.3307

Abstract:
Liquid level control is a regulatory system that is widely used by the petrochemical industry, paper mills, and steam power plants (PLTU). Fuzzy control techniques have light computing capabilities and do not require knowledge of the parameters of the system. The purpose of this research is to design and design a device that can make it easier to adjust the liquid level in the storage tank and observe the fuzzy control performance. Control is done by adjusting the valve opening in the storage tank. From the results of this study, data on setpoint 56 is obtained, the valve is at an angle with all open status (BS), at the first second or 1 second, and at set point 41, the valve is at an angle with a half-closed status (SN), in the 13th second, and the valve will be closed all (NS), if the valve is at an angle at the set point 29, with a time of 1620 seconds or 27 minutes. Based on this research, the proposed system is able to control the water level in the tank using fuzzy control.
Supriadi Supriadi
Buletin Ilmiah Sarjana Teknik Elektro, Volume 2, pp 163-170; doi:10.12928/biste.v2i3.3348

Abstract:
The calculator is a calculation tool that is widely used in various specialized fields of business and commerce. The use of a calculator makes it easier for humans to perform calculation operations, but there are obstacles in the process of inputting numbers if you want to calculate the value of numbers on written media such as paper, whiteboards and so on. The user must first see the text on written media, then read it and remember it then type the writing on a calculator tool or application. The drawback of this method is that when the user forgets the writing on the written media, the user will see the written text and remember it again so that it takes longer to perform calculations using a calculator. The method used in this study is Optical Character Recognition, this method can recognize text contained in images or handwritten images of mathematical number operations. The results of the introduction of the text will then be carried out by arithmetic calculations to get the calculation results. From the trials on 20 handwritten images of mathematical number operations, the results obtained were 85% accuracy of extraction and accuracy of handwritten images that can be calculated and correct by 85%.
Muhammad Setiawan, Riky Dwi Puriyanto
Buletin Ilmiah Sarjana Teknik Elektro, Volume 2, pp 111-118; doi:10.12928/biste.v2i3.1478

Abstract:
This study aims to monitor the value of the voltage on the battery using a voltage sensor and using the State of Charge method to estimate the charged power of the VRLA battery remotely by utilizing SMS Gateway-based technology so that checking is no longer necessary. The results obtained are displayed on the smartphone in the form of an SMS. To determine the SOC in a 12V VRLA battery, it is calculated based on the number of each cell. VRLA 12V has 6 cells, each cell consisting of 2V to 2.4Volt. The capacity of a VRLA battery in 1 cell is declared 100% full at a voltage of 2.3 volts. So that data is obtained to determine the full percentage of the VRLA 12V 6 cell battery with a capacity of 7.2Ah, namely 13.8V. Experiments were carried out using solar panels, VRLA batteries, voltage sensors, Arduino UNO, and GSM SIM900A modules. This study succeeded in reading the measured voltage value with the sensor, and obtained an error value of 0.20 and a standard deviation of 0.02, and for the monitoring process to run smoothly without problems.
Okik Surikno, Tole Sutikno
Buletin Ilmiah Sarjana Teknik Elektro, Volume 2, pp 137-144; doi:10.12928/biste.v2i3.1753

Abstract:
In this study, a circuit was designed to improve sampling in discontinuous SVPWM simulations using Quartus II software. The v_beta_sin unit was successfully simulated using the waveform editor. The results displayed are in accordance with previous calculations, if the input is 000000001 then the output is 100000011 and so on. The v_alfa_cos unit is also successfully simulated using the waveform editor. The simulation results if the input is 000000001 then the output is 111111111 and so on, according to the previous calculation. The unit counter was successfully simulated using the block diagram in Quartus II. The output of this unit counter is in the form of 9 bits to retrieve v_beta_sin and v_alfa_cos data. The v_beta_sin, v_alfa_cos and counter units used as reference signals are successfully simulated and can be used as a supporting circuit in the simulation of the discontinuous SVPWM method. The results of the simulation show an increase in sampling or sampling by 512.
Moch Badrus Sholeh, Amalia Herlina, Fuad Hasan
Buletin Ilmiah Sarjana Teknik Elektro, Volume 2, pp 91-102; doi:10.12928/biste.v2i2.2741

Abstract:
The Nurul Jadid University Library (UNUJA) currently requires valid visitor data, because the number of visitors is an indicator of library performance in terms of disciplining staff / employees. For this reason, the UNUJA library requires an automatic library door lock control system using Arduino Uno and QR-Code. In designing tools, Arduino Uno and QR-Code are integrated with the library database application. Based on testing and analysis, it can be obtained that the success rate of testing tools in reading QR-code is 100 percent. The conclusion is that the assembly of the library door lock control system based on Arduino Uno and integrated QR-Code with the database has been able to read digital input and output.
Galih Fanani, Imam Riadi
Buletin Ilmiah Sarjana Teknik Elektro, Volume 2, pp 70-74; doi:10.12928/biste.v2i2.1065

Abstract:
This research is carried out an analysis and investigation of digital log file data retrieval from DoS (Denial of Service) attacks, on internet networks that have been detected by IDS (Intrusion Detection System) and using Wireshark as Tools Analysis Network. The research phase begins with the design of an experimental scenario which is often carried out daily where users access the internet network. The next stage is an attack in the form of ping flood on the target computer connected to the internet network, the final stage of data retrieval which will be analyzed later. Testing research using UAT (User Acceptance Test), to prove that the analysis has been received by the user. The results of research conducted to obtain data in the form of an attacker's IP (Internet Protocol), target IP, protocol type, the port used and the time of the attack. In the UAT test results, the obtained value of 18% of students disagrees, 58% of students agree, and 24% of students strongly agree. This research has conducted an analysis of random data attacks using Wireshark applications received by users.
Nur Ratnawati, Sunardi Sunardi
Buletin Ilmiah Sarjana Teknik Elektro, Volume 2, pp 83-90; doi:10.12928/biste.v2i2.1522

Abstract:
This study discusses tools for digital current monitoring using an Arduino-based ACS712 sensor. The current sensor ACS712 5A uses the principle of hall effect and is a current sensor whose circuit complexity is simple. The purpose of this microcontroller is to read data obtained from the sensor using the Analog to Digital Converter (ADC) feature and then display it in the serial monitor. The ATMEGA328 microcontroller is assisted by a current measuring circuit equipped with a sensor mounted in series against the circuit to be measured in order to measure the current flowing in the circuit. The test results show that the sensor can measure the current value at its peak value with an error value of -0.066 and a standard deviation value of 0.011419. Based on the test results it can be seen that the tool can work well and has a good accuracy rate.
Moch Faizal Deva Prayogo, Wahyu Sapto Aji
Buletin Ilmiah Sarjana Teknik Elektro, Volume 2, pp 75-82; doi:10.12928/biste.v2i2.1031

Abstract:
The medication reminder system is designed to set the patient's daily drug consumption schedule. This system uses RTC DS1302 as a time saver and as an alarm, while the output is in the form of a buzzer and LED. Schedule of drug consumption can be arranged morning, afternoon, and evening according to patient needs. On the device there is a DVD motor drive that is used to extract the drug automatically. There is also a temperature sensor in the form of DHT11 to monitor the temperature of the device, so that the quality of the drug is maintained. The system was tested using 3 drug slots in it. The device is set using a keypad to make it easier for patients to manage medication consumption schedules. After being tested, the results of the alarm output sound in the form of a buzzer. and the output of a medicine container that uses a DVD motor automatically. After the device is tested, an alarm in accordance with what is set schedule indicates the tool is running in accordance with the destination.
Denny Yoga Pratama, Anton Yudhana
Buletin Ilmiah Sarjana Teknik Elektro, Volume 2, pp 59-69; doi:10.12928/biste.v2i2.1607

Abstract:
Speech recognition is a technique that allows a computer system to receive input in the form of a spoken word. The words are transformed into digital signals by changing sound waves into a group of numbers and then adjusted to certain codes and matched with a pattern stored in a device. The results of the identification of spoken words can be displayed in written form and can be read by technological devices. The tool in this study was designed to be able to help people with hearing impairment so they can participate in prayer in congregation in knowing the changing movements of prayer. This tool is designed with an Arduino Nano microcontroller board as a voice processing function received from speech recogniton. The results issued by this tool in the form of vibrations that will be directly felt by the user. Presentation of success will increase if the sound around the input is not too noisy. Presentation of success in the words "Allahu Akbar" reached 82%, "Sami'allahu Liman Hamidah" reached 90% and "Assalamualaikum Warahmatullahiwabarakatuh" reached 80%.
Ahmad Sopi Samosir, Nuryono Satya Widodo
Buletin Ilmiah Sarjana Teknik Elektro, Volume 2, pp 51-58; doi:10.12928/biste.v2i2.922

Abstract:
In performing dance moves, humanoid robots are expected to move flexibly and not easily fall during dance moves. To reduce the risk of robots falling while performing dance moves, a balance control system using a gyroscope sensor and accelerometer from the MPU6050 is controlled through the Arduino MEGA 2560 PRO. Robots that have balance control, are able to maintain stability in track conditions that have a certain degree of slope. This balance control system uses the Kalman filter method for processing data from the gyroscope sensor and accelerometer in order to reduce the noise that occurs during the robot's balance process. From the results of the test, the percentage of the success rate of robots in rest was 88.8%, the percentage of success when the robot was running was 86.6%, and the percentage of success when the robot was walking with dancing was 75%. From the results of all tests, humanoid robot has a percentage of 83.4% after adding a balance control system and when the humanoid robot does not use balance control will only produce a percentage of success rate of 48.4%.
Yuda Indra Pranata, Muchlas Arkanuddin
Buletin Ilmiah Sarjana Teknik Elektro, Volume 2, pp 33-39; doi:10.12928/biste.v2i1.1604

Abstract:
This study aims to simulate a telemetry system monitoring the level of the fuel level at an SMS-based gas station using an ultrasonic sensor integrated with the Arduino Uno microcontroller. The gas station's fuel tank was simulated using a 5 liter reservoir, while the HC-SR04 ultrasonic sensor was used to detect fuel level. The SIM800L module is used as a sender of information messages about the fuel level at a predetermined condition. This system is equipped with an LCD as a viewer when the data level is read. Based on testing the developed system can function well, shown by the average length of time the process of sending messages from reading the level limit on the tank, until the receipt of messages on mobile phones of 7.6 seconds. While the success rate of reading to the level of fuel level and sending automatic messages on the system reaches 100%.Penelitian ini bertujuan untuk membuat simulasi sistem telemetri pemantauan level ketinggian BBM di SPBU berbasis SMS gateway menggunakan sensor ultrasonik yang diintegrasikan dengan mikrokontroler Arduino Uno. Tangki BBM SPBU disimulasikan menggunakan sebuah tandon berkapasitas 5 liter, sedangkan sensor ultrasonik HC-SR04 digunakan untuk mendeteksi level ketinggian BBM. Modul SIM800L digunakan sebagai pengirim pesan informasi mengenai level ketinggian BBM pada kondisi yang telah ditentukan. Sistem ini dilengkapi dengan LCD sebagai penampil ketika data level terbaca. Berdasarkan pengujian sistem yang dikembangkan dapat berfungsi dengan baik, ditunjukkan oleh rata-rata lamanya waktu proses pengiriman pesan dari pembacaan level limit on tank, hingga diterimanya pesan pada handphone sebesar 7,6 detik. Sedangkan tingkat keberhasilan pembacaan terhadap level ketinggian BBM dan pengiriman pesan otomatis pada sistem tersebut mencapai 100%.
Syahid Al Irfan,
Buletin Ilmiah Sarjana Teknik Elektro, Volume 2, pp 40-50; doi:10.12928/biste.v2i1.985

Abstract:
In a soccer game the ability of humanoid robots that one needs to have is to see the ball object in real time. Development of the ability of humanoid robots to see the ball has been developed but the level of accuracy of object recognition and adaptation during matches still needs to be improved. The architecture designed in this study is Convolutional Neural Network or CNN which is designed to have 6 hidden layers with implementation of the robot program using the Tensorflow library. The pictures taken are used in the training process to have 9 types of images based on where the pictures were taken. Each type of image is divided into 2 classes, namely 2000 images for ball object classes and 2000 images for non-ball object classes. The test is done in real time using a white ball on green grass. From the architectural design and white ball detection test results obtained a success rate of 67%, five of the nine models managed to recognize the ball. The model can recognize objects with an image processing speed of a maximum of 13 FPS.Dalam pertandingan sepak bola kemampuan robot humanoid yang perlu dimiliki salah satunya adalah melihat objek bola secara real time. Pengembangan kemampuan robot humanoid untuk melihat bola telah dikembangkan tetapi tingkat akurasi pengenalan objek dan adaptasi saat pertandingan masih perlu ditingkatkan. Arsitektur yang dirancang pada penelitian ini yaitu Convolutional Neural Network atau CNN yang dirancang memiliki 6 hidden layer dengan implementasi pada program robot menggunakan library Tensorflow. Gambar yang diambil digunakan dalam proses training memiliki 9 jenis gambar berdasarkan tempat pengambilan gambar. Tiap jenis gambar terbagi menjadi 2 class yaitu 2000 gambar untuk class objek bola dan 2000 gambar untuk class objek bukan bola. Pengujian dilakukan secara real time dengan menggunakan bola berwarna putih di atas rumput hijau. Dari perancangan arsitektur dan hasil pengujian pendeteksian bola putih didapatkan persentase keberhasilan 67% yaitu lima dari sembilan model berhasil mengenali bola. Model dapat mengenali objek dengan kecepatan pengolahan gambar adalah maksimal 13 FPS.
Buletin Ilmiah Sarjana Teknik Elektro, Volume 2, pp 24-32; doi:10.12928/biste.v2i1.1491

Abstract:
This research identifies the quality of pepper powder using a computer automatically. The research method uses the stationary angle method. The design of this system is done by image processing techniques. The image of ground pepper that has been taken is then cropped to remove the unused portion of the image. The next step is to convert the original image into grayscale and then convert it to binary. The parameter of the stationary angle is when it has an angle of less than or equal to 38 °, the ground pepper includes fine ground pepper. If the angle ranges from 38o to 40o, including medium powdered pepper, and if the angle is greater than 41o, including the texture of coarse pepper powder. Testing 3 different types of samples obtained 40 mesh is 35.18 o; for 20 mesh is 40.46o and 10 mesh is 41.66o. Therefore, it can be seen that the smaller the texture of the size of ground pepper, the finer the quality.Penelitian ini mengidentifikasi kualitas lada bubuk menggunakan komputer secara otomatis. Metode penelitian menggunakan metode sudut diam. Perancangan sistem ini dilakukan dengan teknik pengolahan citra. Citra lada bubuk yang telah diambil selanjutnya di-cropping untuk menghilangkan bagian citra yang tidak terpakai. Langkah selanjutnya adalah citra hasil asli tersebut dikonversi dalam bentuk grayscale dan selanjutnya dikonversi dalam bentuk biner. Parameter sudut diam adalah ketika memiliki sudut kurang dari atau sama dengan 38o, lada bubuk tersebut termasuk lada bubuk yang halus. Jika sudutnya berkisar antara 38o sampai 40o maka termasuk lada bubuk sedang, dan jika sudutnya lebih besar dari 41o maka termasuk tekstur lada bubuk kasar. Pengujian 3 jenis sampel yang berbeda didapatkan 40 mesh adalah 35,18o; untuk 20 mesh adalah 40,46o dan 10 mesh adalah 41,66o. Oleh karena itu dapat diketahui bahwa semakin kecil tekstur ukuran lada bubuk, semakin halus kualitasnya.
Dony Samara, Mushlihudin Mushlihudin
Buletin Ilmiah Sarjana Teknik Elektro, Volume 2, pp 1-13; doi:10.12928/biste.v2i1.954

Abstract:
One of the data in the industrial process is information on shipping goods in a distribution warehouse. This study proposes a web-based freight information system in a distribution warehouse with a barcode system as the naming management of goods. The barcode reading system uses a barcode scanner as a barcode label reader, with an Arduino microcontroller device and NodeMCU as a controller and communication device with the web. The localhost web-based information system was built using the XAMPP application. Display information system using a simple display on the browser page. The results obtained in this study have successfully built a barcode-based goods delivery management system, information about the goods is coded into a barcode. The barcode reading system has successfully read and communicated with the web, with experiments conducted using 100 barcode labels, the success of reading and sending data has shown good results. Goods delivery information system in a web-based distribution warehouse has also been successfully built with an average data storage time of 5.5 seconds.Salah satu data dalam proses industri yaitu informasi pengiriman barang di gudang distribusi. Penelitian ini mengusulkan sebuah sistem informasi pengiriman barang berbasis web di sebuah gudang distribusi dengan sistem barcode sebagai manajemen penamaan barang. Sistem pembacaan barcode menggunakan barcode scanner sebagai pembaca label barcode, dengan perangkat mikrokontroler Arduino dan NodeMCU sebagai perangkat kontroler dan komunikasi dengan web. Sistem informasi berbasis web localhost dibangun menggunakan aplikasi XAMPP. Tampilan sistem informasi menggunakan tampilan sederhana di halaman browser. Hasil yang didapatkan dalam penelitian ini adalah telah berhasil dibangun sistem manajemen pengiriman barang berbasis barcode, informasi mengenai barang dikodekan kedalam bentuk barcode. Sistem pembacaan barcode telah berhasil membaca dan berkomunikasi dengan web, dengan percobaan yang dilakukan menggunakan 100 label barcode keberhasilan pembacaan dan pengiriman data telah menunjukkan hasil yang baik. Sistem informasi pengiriman barang di gudang distribusi berbasis web telah berhasil pula dibangun dengan lama penyimpanan data rata – rata 5,5 detik.
Anggit Febriawan,
Buletin Ilmiah Sarjana Teknik Elektro, Volume 2, pp 14-23; doi:10.12928/biste.v1i3.987

Abstract:
One of the problems solved in robot control is that the required robot movement system can be moved efficiently. Controls used to increase the efficiency of robot motion are the PID (Proportional-Integral-Derivative) Control and the IMU BNO055 sensor. The concept used by the robot to be able to rotate to a certain angle entered the desired angle, then read the sensor angle BNO055 then the results of the sensor readings are sent to Arduino to then provide a signal to drive the motor. The results of research that has been done, the robot can display an angle of 0o and 180o in accordance with the sensor readings. The robot can rotate with a short effective time from 10 times of testing and with an average time of 2 seconds. From the research results, the robot can rotate to the desired angle effectively and the robot can choose the desired angle with the help of instructions with an average error of 0.88%. The best control parameter values are Kp = 1; Ki = 0,00095; and Kd = 4.Salah satu masalah yang dihadapi dalam kendali robot yaitu sistem gerakan robot yang mengharuskan dapat bergerak secara efisien. Kendali yang digunakan untuk meningkatkan efisiensi gerakan robot adalah dengan Kendali PID (Proporsional-Integral-Derivatif) dan sensor IMU BNO055. Konsep yang digunakan robot agar dapat berotasi ke sudut tertentu yaitu memasukkan sudut yang diinginkan, kemudian membaca sudut sensor BNO055 kemudian hasil dari bacaan sensor dikirim ke Arduino untuk selanjutnya memberikan sinyal untuk menggerakkan motor. Hasil penelitian yang sudah dilakukan, robot dapat menampilkan sudut 0o dan sudut 180o sesuai dengan pembacaan sensor. Robot dapat berotasi dengan efektif dengan waktu yang singkat dari 10 kali pengujian dan dengan rata – rata waktu yaitu 2 detik. Dari hasil penelitian robot dapat berotasi ke sudut yang diinginkan dengan efektif dan robot dapat menunjukkan sudut yang diinginkan dengan bantuan petunjuk dengan cukup baik dengan rata – rata error 0,88%. Nilai parameter pengendali terbaik adalah Kp=1; Ki=0,00095; dan Kd=4.
Arif Budi Setiawan,
Buletin Ilmiah Sarjana Teknik Elektro, Volume 1, pp 100-107; doi:10.12928/biste.v1i3.1033

Abstract:
Sistem penerangan ruangan konvensional kurang efisien dalam penggunaan energi karena hanya menggunakan prinsip menyalakan (on) dan mematikan (off) lampu serta tidak menghiraukan pengaruh dan kontribusi dari luar atau pencahayaan matahari. Untuk mengatasi permasalahan tersebut dibuatlah sistem pengendalian cahaya lampu penerangan secara otomatis menggunakan Programmable Logic Controller (PLC) Omron sebagai pengendali. Proses pengendalian intensitas cahaya lampu, pada ruangan memanfaatkan dua sensor cahaya berjenis Light Dependent Resistance (LDR) dengan menggunakan metode fuzzy Sugeno sebagai cara pengambilan keputusan dengan dua himpunan dan tiga variabel disetiap himpunan, sedangkan untuk mengubah kembali ke bentuk bilangan crisp atau defuzzyfikasi menggunakan metode Centroid. Kendali fuzzy logic sangat tepat digunakan untuk pengendalian sistem yang bersifat non-linear dan adaptif. Berdasarkan hasil pengujian, sistem yang dibangun dapat berjalan dengan baik dengan tingkat akurasi pengendalian sebesar 99,38% yang diperoleh dari perbandingan antara pengujian sistem langsung dan pengujian dengan Matlab.Conventional room lighting systems are less efficient in energy use because they only use the principle of turning on (off) and turning off (off) lights and ignoring the influence and contribution of outside or solar lighting. To overcome these problems, a lighting control system was made automatically using the Omron Programmable Logic Controller (PLC) as a controller. The process of controlling light intensity, in a room utilizing two light sensors, type Light Dependent Resistance (LDR) using the Sugeno fuzzy method as a way of making decisions with two sets and three variables in each set, while to change back to the form of crisp numbers or defuzzification using the Centroid method. Fuzzy logic control is very appropriate to be used for controlling systems that are non-linear and adaptive. Based on the test results, the system built can run well with a level of accuracy of control of 99.38% obtained from the comparison between direct system testing and testing with Matlab.
Syaiful Hasan, Amalia Herlina, Muhammad Hasan Basri
Buletin Ilmiah Sarjana Teknik Elektro, Volume 1, pp 108-117; doi:10.12928/biste.v1i3.1099

Abstract:
Selama ini masyarakat di Indonesia melakukan pengeringan jagung dengan cara konvensional, yaitu dengan cara menjemur langsung di bawah sinar matahari. Selain tidak efektif cara tersebut juga sangat bergantung pada cahaya matahari. Oleh karena itu, penelitian ini mengusulkan tentang mesin pengering jagung dengan menggunakan mikrokontroler dan pengendali PID agar pengeringan dapat berjalan dengan maksimal. Selain itu alasan pembuatan alat ini adalah agar pengeringan biji jagung dapat terus berjalan tidak bergantung pada cahaya matahari. Untuk mencapai kondisi jagung yang sesuai standar pengeringan yaitu 14%, diperlukan sensor SHT11 untuk mendeteksi kadar air yang ada pada jagung. Untuk pemanas menggunakan 5 elemen pemanas serta exhaust fan sebagai penghantar panas. Pengaturan kelembaban menggunakan set point yang ada pada mikrokontroler. Berdasarkan pengujian, alat dapat berjalan dengan baik dan memiliki keunggulan waktu yang pengeringan yang lebih pendek daripada metode konvensional. Hasil pengujian diperoleh hasil bahwa nilai rata-rata MEA (Mean Absolute Error) adalah 0,611% dan rata-rata RMSE (Root Mean Square Error) adalah 0,687%, Time Constan = 55 detik, Rise Time = 6,95 detik dan Setting Time = 164,45 detik pada set point RH 21,5%.So far, people in Indonesia are drying corn in a conventional way, namely by drying directly in the sun. Besides being ineffective, this method is also very dependent on sunlight. Therefore, this study proposes a corn drying machine using a microcontroller and PID controller so that drying can run optimally. Besides that, the reason for making this tool is that the drying of corn kernels can continue without dependence on sunlight. To achieve the conditions of corn in accordance with the drying standard of 14%, the SHT11 sensor is needed to detect the moisture content in corn. For heaters use 5 heating elements and exhaust fans as heat conductors. Humidity regulation using the setpoint that is on the microcontroller. Based on testing, the tool can run well and has the advantage of shorter drying time than conventional methods. The test results obtained that the average value of the MEA (Mean Absolute Error) is 0.611% and the average RMSE (Root Mean Square Error) is 0.687%, Time Constant = 55 seconds, Rise Time = 6.95 seconds and Setting Time = 164.45 seconds at 21.5% RH setpoint.
Muhamad Kamaludin, Wahyu Sapto Aji
Buletin Ilmiah Sarjana Teknik Elektro, Volume 1, pp 91-99; doi:10.12928/biste.v1i3.978

Abstract:
Kontes robot ABU Indonesia mengusung tema ABU Robocon 2018 yaitu Bola Berkah. Dalam tema yang diusung, salah satu robot yang digunakan adalah robot manual yang berfungsi mengambil dan memberikan bola berkah kepada robot otomatis. Robot manual mengalami kesulitan dalam bergerak lurus ketika mengambil dan menyerahkan bola kepada robot otomatis. Ketika berada pada posisi pengambilan dan posisi penyerahan bola, robot yang menggunakan roda omniwheel tidak berada pada posisinya karena terdapat kelembaman. Penerapan Pengendali PID (Proporsional-Integral-Derivatif) yang mendapatkan nilai koreksi dari sensor Rotary Encoder merupakan salah satu solusi yang tepat untuk diimplementasikan pada robot manual. Dengan menggunakan Metode trial and error, PID yang dikembangkan dapat membuat pergerakan robot manual menjadi lebih efisien dan lebih mudah saat dikendalikan oleh operator. Robot Manual menggunakan mikrokontroler Arduino-Due. Hasil pengujian penerapan pada sistem menghasilkan akurasi gerak lurus robot sebesar 60 %, ketepatan posisi mencapai 88 % dengan menggunakan 50% kecepatan putar motor dan akurasi ketepatan posisi mencapai 75% dengan menggunakan 100% kecepatan putar motor.The ABU Indonesia robot contest carries the ABU Robocon 2018 theme, Blessing Ball. In the theme, one of the robots used is a manual robot that functions to take and give a blessing ball to the automatic robot. Manual robots have difficulty in moving straight when taking and handing the ball to an automated robot. When in the taking position and the ball handover position, the robot that uses the Omni wheel is not in position because there is inertia. The application of PID (Proportional-Integral-Derivative) controller which gets the correction value from the Rotary Encoder sensor is one of the right solutions to be implemented in manual robots. By using the trial and error method, the developed PID can make manual robot movements more efficient and easier when controlled by the operator. Manual Robot uses an Arduino-Due microcontroller. The results of testing the application of the system produce an accuracy of 60% straight robot motion, position accuracy reaches 88% using 50% motor rotational speed and accuracy of positioning accuracy reaches 75% using 100% motor rotational speed.
, Nuryono Satya Widodo
Buletin Ilmiah Sarjana Teknik Elektro, Volume 1, pp 131-143; doi:10.12928/biste.v1i3.1126

Abstract:
Robot Hexapod Pemadam Api merupakan robot berkaki 6 yang bertugas menyusuri ruangan labirin untuk menemukan dan memadamkan api dalam waktu yang singkat. Dalam menjalankan tugasnya dibutuhkan 2 buah sensor untuk menjalankan tugas ini yaitu sensor flame array dan sensor Sharp GP. Sensor flame array terdiri dari 16 buah sensor flame yang digunakan untuk mengetahui nilai error berdasarkan letak keberadaan api yang mampu dijangkau dalam rentang horisontal 180 derajat. Sementara sensor Sharp GP berfungsi untuk mengetahui jarak antara robot dengan lilin sebagai sumber api. Kedua sensor ini berperan sebagai pelengkap dalam bernavigasi light following agar robot mampu menemukan, menghampiri, dan memposisikan bagian tengah muka robot berhadapan dengan api tanpa menabraknya. Dalam bernavigasi robot dikontrol oleh Pengendali PID (Proportional-Integral-Derivative). Hasil pengujian menunjukan bahwa pengendali proportional berperan mempercepat robot mengarah ke api. Pengendali derivative berperan dalam meredam terjadinya osilasi yang disebabkan kontrol proportional dalam mengejar titik api. Sementara kontrol integral berperan dalam merevisi kekeliruan robot pada set point. Hasil pengujian lain menunjukan keberhasilan dari implementasi pada robot hexapod untuk memadamkan api membutuhkan waktu rata-rata 5,5 detik. Sementara nilai parameter PID terbaik adalah Kp=35, Ki=20, dan Kd=20.Fire Extinguisher Hexapod Robot is a 6-legged robot whose job is to navigate the labyrinth room to find and extinguish the fire in a short time. In carrying out their duties, two sensors are needed to carry out this task, namely the flame array sensor and the Sharp GP sensor. Flame array sensor consists of 16 flame sensors that are used to determine the error value based on the location of the existence of a fire that can be reached within the horizontal range of 180 degrees. While the Sharp GP sensor functions to determine the distance between the robot and the candle as a source of the fire. Both of these sensors act as a complement in navigating the light following so that the robot is able to find, approach, and position the centre of the face of the robot facing the fire without crashing into it. In navigating the robot is controlled by PID (Proportional-Integral-Derivative) Controller. The test results show that the proportional controller has the role of accelerating the robot to fire. The derivative controller plays a role in reducing the occurrence of oscillations caused by proportional control in the pursuit of hotspots. While integral control plays a role in revising the errors of the robot at the set point. Other test results show the success of the implementation of the hexapod robot to extinguish the fire takes an average of 5.5 seconds. While the best PID parameter values are Kp = 35, Ki = 20, and Kd = 20.
, Imam Riadi
Buletin Ilmiah Sarjana Teknik Elektro, Volume 1, pp 144-152; doi:10.12928/biste.v1i3.1100

Abstract:
Perkembangan zaman yang semakin pesat menuntut adanya layanan informasi yang lebih cepat, tepat, dan akurat menjadikan jaringan komputer sebagai kebutuhan utama. Traffic Shaping dengan Quality of Service (QoS) dapat digunakan dalam mengoptimalkan bandwidth suatu jaringan untuk menentukan jenis-jenis lalu lintas jaringan. Metode Hierarchical Token Bucket (HTB) dapat mengimplementasi pembagian trafik yang lebih akurat, dengan bandwidth yang tidak digunakan dapat dioptimalkan oleh pengguna lain. Hasil traffic shaping menggunakan metode HTB menghasilkan rata-rata indeks QoS yaitu 3,75 dan dapat dikategorikan Baik, dibandingkan sebelum menerapkan traffic shaping yaitu rata-rata 2,25 yang dikategorikan Kurang Baik. Berdasarkan hasil pengujian dapat disimpulkan bahwa kinerja jaringan hotspot dengan Traffic Shaping dan Quality of Service (QoS) dapat meningkatkan kualitas jaringan daripada sebelumnya.The development of an increasingly rapid era requires the existence of information services that are faster, more precise, and accurate, making computer networks a primary need. Traffic Shaping with Quality of Service (QoS) can be used in optimizing the bandwidth of a network to determine the types of network traffic. The Hierarchical Token Bucket (HTB) method can implement more accurate traffic sharing, with unused bandwidth being optimized by other users. The results of traffic shaping using the HTB method produces an average QoS index of 3.75 and can be categorized Good, compared to before applying traffic shaping which is an average of 2.25 which is categorized as Poor. Based on the test results it can be concluded that the performance of hotspot networks with Traffic Shaping and Quality of Service (QoS) can improve network quality than before.
Fahmi Abdul Aziz,
Buletin Ilmiah Sarjana Teknik Elektro, Volume 1, pp 118-130; doi:10.12928/biste.v1i3.1050

Abstract:
Dalam hal mengecat tidak semua orang dapat melakukan pengecatan dengan sempurna, banyak hasil cat yang tidak merata atau lapisan yang terlalu tebal dan terlalu tipis. Tujuan penelitian ini adalah membuat sebuah alat yang membantu manusia untuk mengecat objek di permukaan datar secara otomatis. Komponen yang digunakan dalam penelitian ini yaitu motor DC PG28, sensor encoder, sensor limit switch dan PLC Omron CP1E-NA20DR-A. Alat ini bergerak berdasarkan sumbu x dan y yaitu bergerak ke atas-bawah dan ke kanan-kiri, kemudian untuk pengecatanya menggunakan roll cat. Setiap pergerakan alat di program menggunakan ladder diagram di software CX-Programmer. Untuk memonitor pergerakan mesin peneliti membuat HMI dari software CX-Designer. Pada pembuatan program ladder diagram peneliti menggunakan metode state diagram karena metode ini dapat menyusun program ladder dengan baik. Pengujian pembacaan RPM motor peneliti membandingkan data dari PLC dengan tachometer dan didapat error sebesar 0,52%. Pergerakan alat pada sumbu x didapat dengan mengendalikan pulsa putaran per rotasi yang terbaca 1380 pulsa per 10 cm oleh sensor encoder. Jarak 10 cm mengacu pada lebar dari roll cat yang dipakai. Kemudian dengan tegangan luar sebesar 12V didapat kecepatan maksimun pada motor DCPG28 sebesar 379 RPM.In the case of painting not everyone can paint perfectly, many paints are not evenly distributed or layers that are too thick and too thin. The purpose of this research is to create a tool that helps humans to paint objects on a flat surface automatically. The components used in this study are the PG28 DC motor, encoder sensor, limit switch sensor and PLC Omron CP1E-NA20DR-A. This tool moves based on the x and y axis that is moving up-down and right-left, then for painting using a paint roll. Every movement of tools in the program uses ladder diagrams in the CX-Programmer software. To monitor the movement of the engine the researcher made an HMI from the CX-Designer software. In making ladder diagram programs researchers use the state diagram method because this method can arrange ladder programs well. Testing the RPM reads the motorbike comparing the data from the PLC with the tachometer and obtained an error of 0.52%. The movement of the tool on the x-axis is obtained by controlling the rotational pulses per rotation which reads 1380 pulses per 10 cm by the encoder sensor. A distance of 10 cm refers to the width of the paint roll used. Then with an outside voltage of 12V, the maximum speed of the DCPG28 motor is 379 RPM.
, Nuryono Satya Widodo
Buletin Ilmiah Sarjana Teknik Elektro, Volume 1, pp 46-55; doi:10.12928/biste.v1i2.915

Abstract:
Pada Kontes Robot Seni Tari Indonesia (KRSTI), mengharuskan peserta untuk dapat membuat robot yang dapat menari secara otomatis dengan diiringi alunan musik. Tujuan penelitian ini adalah membuat robot humanoid yang dapat menari ketika musik pengiring diputar dan berhenti ketika musik berhenti. Penelitian ini menggunakan IC MSGEQ7 sebagai pengolah musik karena IC ini dapat membaca nilai frekuensi musik secara detail sebanyak tujuh frekuensi yaitu frekuensi 63Hz; 16Hz; 400Hz, 1kHz; 2,5kHz; 6,25kHz; dan 16kHz. Ketujuh frekuensi tersebut dijadikan acuan sebagai isyarat robot untuk bergerak atau berhenti. Penentuan frekuensi sebagai isyarat gerak didapat melalui sampling musik Tari Remo menggunakan perangkat lunak Matlab dengan metode FFT (Fast Fourier Transform). Isyarat gerak tersebut dikirimkan ke sistem robot melalui Modul Bluetooth HC-05. Jika sistem robot mendapat isyarat untuk bergerak maka robot akan menggerakkan servo penggerak menjadi gerakan yang serasi. Hasil yang didapat dari pengujian adalah dapat diketahui frekuensi yang sering muncul pada musik tari remo yaitu pada frekuensi 0-4000Hz. Setelah frekuensi diketahui, implementasi pada robot memperoleh hasil robot dapat menari ketika musik diputar dan robot dapat berhenti ketika musik dihentikan.At the Indonesian Dance Robot Contest (KRSTI), it requires participants to be able to make robots that can dance automatically accompanied by music. The purpose of this study is to create a humanoid robot that can dance when the accompaniment music is playing and stop when the music stops. This study uses IC MSGEQ7 as a music processor because this IC can read music frequency values in detail as many as seven frequencies namely 63Hz frequency; 16Hz; 400Hz, 1kHz; 2.5kHz; 6.25kHz; and 16kHz. The seven frequencies are used as a reference as a robot signal to move or stop. The determination of the frequency as a gesture is obtained through the sampling of Remo Dance music using Matlab software with the FFT (Fast Fourier Transform) method. These motion signals are sent to the robot system via the Bluetooth Module HC-05. If the robot system gets a signal to move, the robot will move the servo drive into a matching movement. The results obtained from testing are the frequency that often appears in Remo dance music, namely the frequency 0-4000Hz. After the frequency is known, the implementation of the robot obtains the results that the robot can dance when the music is playing and the robot can stop when the music is stopped.
Muhammad Adhzerian Syafitra Rezki, Harri Maliansyah, Dimas Yusuf Ariyanto, Muhammad Faishal
Buletin Ilmiah Sarjana Teknik Elektro, Volume 1, pp 64-72; doi:10.12928/biste.v1i2.884

Abstract:
Penelitian ini bertujuan memanfaatkan air larutan garam sebagai penghantar listrik untuk menjadikannya alternatif pengganti kabel tembaga yang saat ini banyak digunakan dalam menghantarkan listrik. Proses dari air larutan garam yang dapat menghantarkan listrik karena pada larutan garam menggandung NaCl yang mengakibat adanya perpindahan elektron dari suatu atom ke atom yang lain. Dalam penelitian ini menggunakan beberapa sampel massa garam yang berbeda-beda serta dilakukan perbandingan daya hantar listrik dengan air tanpa larutan garam dan tembaga yang dihubungkan pada beban lampu sebesar 10 Watt. Hasil pengujian yang didapatkan, larutan tanpa garam menghasilkan daya sebesar 0,94 Watt dan larutan dengan massa garam 50 gram, 100 gram, 200 gram dan 400 gram menghantarkan daya listrik sebesar 3,43 Watt, 4,51 Watt, 6,17 Watt dan 7,61 Watt sedangkan daya hantar tembaga sebesar 9,51 Watt. Hal tersebut menunjukkan bahwa dalam penggunaan air larutan garam sebagai penghantar listrik, jika semakin bertambah massa garam maka daya hantar listrik yang dihasilkan juga akan semakin besar.This study aims to use salt water as an electrical conductor to make it an alternative to copper wires which are currently widely used in conducting electricity. The process of saltwater solution that can conduct electricity because the salt solution contains NaCl which results in the transfer of electrons from one atom to another. In this study using several different samples of the mass of salt and comparing the conductivity of electricity with water without salt and copper solutions connected to the lamp load of 10 Watts. The test results obtained, a solution without salt produces power of 0.94 Watt and a solution with a mass of salt 50 grams, 100 grams, 200 grams and 400 grams deliver electrical power of 3.43 Watts, 4.51 Watts, 6.17 Watts and 7.61 Watts while the conductivity of copper is 9.51 Watt. This shows that in the use of salt water as a conductor of electricity if the mass of salt increases, the conductivity of electricity produced will also be even greater.
, Sunardi Sunardi, Riky Dwi Puriyanto
Buletin Ilmiah Sarjana Teknik Elektro, Volume 1, pp 73-81; doi:10.12928/biste.v1i2.907

Abstract:
Dalam penelitian ini dirancang suatu sistem pemantauan kondisi tegangan baterai secara otomatis dengan tujuan dapat mempermudah pengguna dalam mengetahui tegangan baterai. Sistem yang dibangun dalam penelitian ini dibagi menjadi 2 bagian yaitu sistem pembacaan data dan sistem komunikasi nirkabel. Dalam sistem pembacaan data menggunakan sensor tegangan dan Arduino Uno sebagai pengolah data, lalu modul Bluetooth HC-05 sebagai media pengirim data ke smartphone. Pada sistem komunikasi nirkabel memanfaatkan Bluetooth serta smartphone Android sebagai media penampil data hasil pembacaan. Sistem pemantauan tegangan baterai lithium polymer menampilkan informasi tentang kondisi tegangan baterai yang dapat dilihat pada smartphone Android. Sistem pemantauan tegangan telah berhasil mendeteksi tegangan pada baterai dengan variasi nilai PWM dengan motor DC sebagai beban. Nilai error tegangan pada PWM 50, PWM 150 dan PWM 255 adalah 0,134; 0,338; dan 0,326. Sementara nilai standar deviasi adalah 0,180555; 0,183848; 0,115758. Hal tersebut menunjukkan alat dapat bekerja dengan baik dan memiliki tingkat akurasi pembacaan yang baik di bawah 0,4 volt.In this study, a battery voltage condition pemantauan system was designed automatically with the aim of making it easier for users to find out the battery voltage. The system built in this study is divided into 2 parts, namely the data reading system and the wireless communication system. In the data reading system uses a voltage sensor and Arduino Uno as a data processor, then the Bluetooth HC-05 module as a data sender to the smartphone. In a wireless communication system utilizing Bluetooth and Android smartphones as a media viewer of reading data. Lithium polymer battery voltage pemantauan system displays information about battery voltage conditions that can be seen on an Android smartphone. The voltage pemantauan system has succeeded in detecting the voltage on the battery with a variation of the PWM value with a DC motor as a load. The voltage error values at PWM 50, PWM 150 and PWM 255 are 0.134; 0.338; and 0.326. While the standard deviation is 0.180555; 0.183848; .115758. This shows the tool can work well and has a good reading accuracy level below 0.4 volts.
, Nuryono Satya Widodo
Buletin Ilmiah Sarjana Teknik Elektro, Volume 1, pp 56-63; doi:10.12928/biste.v1i2.955

Abstract:
Robot seni tari Lanange Jagad untuk lomba Kontes Robot Seni Tari Indonesia (KRSTI) belum mampu membedakan zona warna pada arena yang menyebabkan robot melakukan gerakan tarian yang tidak sesuai dengan tempatnya. Oleh karena itu dibutuhkan kontrol otomatisasi menggunakan sensor warna TCS3200. TCS3200 akan memperoleh komposisi RGB yang tepat menggunakan perhitungan frekuensi. Hasil yang dicapai dalam penelitian ini adalah robot seni tari Lanange Jagad dapat membedakan zona dengan memanfaatkan warna merah, biru, biru muda, hijau, dan putih dengan tingkat keberhasilan 84%. Ketika robot mendeteksi warna yang sudah ditentukan pada setiap zona, robot akan secara otomatis melakukan gerakan tari yang sudah disesuaikan dengan zona tersebut. Saat robot masuk ke zona warna berbeda maka robot akan menghentikan gerakan tari pada zona sebelumnya dan memanggil gerakan tari selanjutnya. Namun masih terdapat banyak noise saat melakukan pengujian sehingga nilai RGB yang digunakan untuk memanggil gerakan tari berubah sehingga robot tidak merespons perintah yang dimasukkan pada program. Nilai RGB yang stabil di dapatkan pada kondisi kaki robot menapak atau bersentuhan langsung dengan zona warna, nilai tersebut yang digunakan untuk pemanggilan gerakan tari.The Lanange Jagad dance robot for the Indonesian Robot Dance Contest (KRSTI) has not been able to distinguish the color zone in the arena that causes the robot to perform dance moves that are not in accordance with its place. Therefore we need automation control using the TCS3200 color sensor. TCS3200 will obtain the right RGB composition using frequency calculations. The results achieved in this study are the Lanange Jagad dance robot can distinguish zones by utilizing red, blue, light blue, green, and white with a success rate of 84%. When the robot detects the colors that have been determined in each zone, the robot will automatically perform dance moves that have been adapted to the zone. When the robot enters a different color zone, the robot will stop the dance movement in the previous zone and call the next dance movement. However, there is still a lot of noise when testing so that the RGB value used to call dance moves changes so that the robot does not respond to commands entered in the program. A stable RGB value is obtained when the robot's foot steps or comes into direct contact with the color zone, the value that is used for calling dance moves.
Ari Widodo,
Buletin Ilmiah Sarjana Teknik Elektro, Volume 1, pp 82-90; doi:10.12928/biste.v1i2.1011

Abstract:
One alternative in reducing accidents at railroad crossings without guards is automatic pneumatic railroad crossings. This tool uses PLC (Programmable Logic Controller) as a processing system. Automatic crossing railroad crossing works by using two proximity sensors that are placed on the right and left crossings with a distance far from the crossing (approximately 1 KM). The system outputs are pneumatically actuated sirens, lights and door lintels. At most this door will move up and down closing and opening the crossing. The use of pneumatics in manufacturing because pneumatics saves more space around the crossing and is safe. In testing, detection is done in 2 opposite directions. The results show the tool has been working to close and open crossings with good performance.Salah satu alternatif dalam mengurangi kecelakaan di pintu perlintasan kereta api tanpa penjaga adalah palang pintu kereta api pneumatik otomatis. Alat ini menggunakan PLC (Programmable Logic Controller) sebagai sistem pemroses. Palang pintu perlintasan kereta api otomatis bekerja dengan menggunakan dua buah sensor proximity yang di letakkan pada kanan dan kiri perlintasan dengan jarak yang jauh dari perlintasan (kurang lebih 1 KM). Keluaran sistem berupa aktifnya sirene, lampu, dan palang pintu yang digerakkan dengan pneumatik. Paling pintu ini akan bergerak naik dan turun menutup dan membuka perlintasan. Penggunaan pneumatik dalam pembuatan karena pneumatik lebih menghemat ruang sekitar perlintasan dan aman. Dalam pengujiannya, pendeteksian dilakukan dengan 2 arah yang berlawanan. Hasil menunjukkan alat telah bekerja menutup dan membuka perlintasan dengan kinerja yang baik.
, Arif Rahman
Buletin Ilmiah Sarjana Teknik Elektro, Volume 1, pp 27-34; doi:10.12928/biste.v1i1.850

Abstract:
Sistem presensi mahasiswa banyak dilakukan secara konvensional. Sistem presensi otomatis yang ada pun memiliki kinerja yang lambat dan tidak mampu diperbarui secara otomatis. Sistem presensi mahasiswa berbasis RFID menggunakan Raspberry Pi 3 diharapkan mampu menangani masalah-masalah tersebut. Sistem pada penelitian ini dibangun menggunakan modul RFID jenis MIFARE RC522, Raspberry Pi 3 model B, dan RTC DS1307. Prinsip kerja sistem ini yaitu menerima masukan berupa hasil identifikasi ID pada kartu RFID, kemudian hasilnya diolah Raspberry Pi 3 sekaligus menentukan respon, dan merekap data presensi pada server. Hasil presensi berupa nama mahasiswa dan mata kuliah ditampilkan pada LCD 16x2. Sebagai hasil akhir, server mengirim data presensi yang dapat ditampilkan pada komputer klien melalui situs web. Pengujian sistem menunjukkan jarak maksimal identifikasi ID sejauh 4,5 cm dengan rata-rata waktu pembacaan selama 150,53 ms. Penambahan RTC DS1307 menjadikan sistem tidak harus terhubung dengan internet untuk update secara otomatis. Selain itu, penelitian ini juga membuktikan bahwa penghalang kayu, karet, keramik, kaca, plastik, dan akrilik, tidak mempengaruhi jarak dan waktu dalam proses identifikasi kartu RFID. Namun penghalang jenis logam dapat menghalangi proses identifikasi kartu RFID.
Andrean Syah Arifin,
Buletin Ilmiah Sarjana Teknik Elektro, Volume 1, pp 19-26; doi:10.12928/biste.v1i1.858

Abstract:
Cara pemberian pakan untuk peternakan ayam masih menggunakan cara konvensional yaitu menggunakan cara manual sehingga dibutuhkan waktu dan tenaga yang banyak. Pemberian pakan ayam petelur otomatis ini dirancang menggunakan PLC OMRON CP1E NA20DR A. Penggerak wadah dan katup-katup pakan menggunakan motor DVD yang dikontrol menggunakan PLC. Sistem telah diuji menggunakan timer untuk menentukan pergerakan motor-motor. Hasilnya motor dapat menggerakkan wadah pembawa pakan dan katup-katup pakan secara otomatis. Rancang bangun pemberian pakan ayam petelur memiliki wadah pentakar dengan volume 80 cm3 yang berjumlah 3 wadah pentakar. Dan memiliki wadah pakan pembewa dengan volume 332,1 cm3. Setelah dilakukan pengujian pemberian pakan ada sejumlah pakan yang tersisa menandakan bahwa alat berjalan dengan baik.
Rio Dwi Listianto, Sunardi Sunardi, Riky Dwi Puriyanto
Buletin Ilmiah Sarjana Teknik Elektro, Volume 1, pp 1-8; doi:10.12928/biste.v1i1.826

Abstract:
Baterai Lithium Polymer (Li-Po) dipilih sebagai sumber daya robot dikarenakan baterai Li-Po karena memiliki bobot yang ringan dan kapasitas penyimpanan listrik yang besar. Namun untuk mengetahui daya baterai yang digunakan, para pemilik robot harus menghentikan robot kemudian dilakukan pengukuran baterai mengunakan alat ukur. Penelitian ini bertujuan memantau nilai tegangan pada baterai Li-Po yang melalui motor penggerak pada robot sepakbola beroda tanpa menggunakan alat ukur dan hasilnya dapat ditampilkan pada komputer maupun PC secara nirkabel. Percobaan dilakukan menggunakan peralatan sensor tegangan dan modul wifi nodeMCU. Hasil dari penelitian ini sensor tegangan dapat membaca data dan didapat nilai standar deviasi 0,39 dan error rata-rata 0,43 yang menunjukkan bahwa sensor memiliki tingkat akurasi yang tinggi. Sementara untuk proses pemantauan sensor berjalan dengan lancar tanpa ada kendala.
, Nuryono Satya Widodo
Buletin Ilmiah Sarjana Teknik Elektro, Volume 1, pp 35-45; doi:10.12928/biste.v1i1.834

Abstract:
Penelitian ini mengusulkan tentang desain Headlamp lampu kendaraan yang dapat meredup berdasarkan pada data lampu kendaraan lawan. Pengolah data menggunakan Arduino uno dan menggunakan sensor BH1750 untuk membaca intensitas cahaya. Lampu Headlamp terdiri dari 3 baris LED yang terdiri dari 4 buah LED setiap baris. Lalu juga terdapat 1 buah lampu LED utama di kanan dan kiri. Berdasarkan pengujian dapat diketahui bahwa lampu LED dapat bekerja dengan baik yaitu dapat meredup dari mulai LED pada baris pertama dan kedua sesuai dengan intensitas cahaya. Perbandingan pengukuran menggunakan perangkat lightmeter menunjukkan bahwa perangkat memiliki nilai error -53,925 dan standar deviasi 51,6110126 yang menunjukkan bahwa desain perangkat masih belum mendapatkan hasil yang baik.
, Muslihudin Muslihudin
Buletin Ilmiah Sarjana Teknik Elektro, Volume 1, pp 9-18; doi:10.12928/biste.v1i1.831

Abstract:
Penggunaan teknologi baru dan canggih menjadi pilihan dunia industri untuk meningkatkan efisiensi produksi baik dari segi kualitas, kuantitas maupun penghematan biaya. Proses otomasi sistem kendali industri tidak akan lepas dari penggunaan perangkat elektronik, seperti halnya pengunaan berbagai macam sensor dan komponen penting lainnya. Pada penelitian ini merancang prototipe konveyor yang memisahkan otomatis balok berdasarkan ukuran volume, bertujuan untuk penghematan tempat produksi kecil dan sumber daya manusia. Perancangan perangkat keras terdiri dari microcontroller Arduino Mega 2560 menjadi penyimpan logika perintah dalam sistem, sensor ultrasonic HC-SR04 sebagai sensor pengukur panjang, lebar dan tinggi barang, motor servo sebagai penyetop dan pemisah barang, liquid crystal display sebagai penampil informasi dan motor dc menjadi penggerak konveyor. Pengujian sistem ini menggunakan barang penelitian 3 balok dengan ukuran berbeda yaitu 315 cm3, 480 cm3 dan 525 cm3. Berdasarkan hasil pengujian menunjukkan klasifikasi volume balok dapat bekerja dengan baik, dengan tingkat rata-rata error 5,4 untuk volume ukuran 315 cm3; 3,2 untuk volume 480 cm3; dan 2,33 untuk volume 525 cm3 dan dengan standar deviasi sistem klasifikasi otomatis volume balok sebesar σ = 9,40.
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