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All Journal Jurnal SPEKTRUM Majalah Ilmiah Teknologi Elektro Journal of Electrical, Electronics and Informatics International Journal of Engineering and Emerging Technology PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Majalah Ilmiah Teknologi Elektro

Yoga Divayana

Electrical Engineering Department Faculty Of Engineering, Udayana University Bali, Indonesia

Author-ID : 2932674

Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Mechanical Engineering Physics Other

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RANCANG BANGUN SPECTROSCOPY OPTIK PORTABEL BERBASIS ARDUINO MICRO I Gede Yogi Astawan; Yoga Divayana; Pratolo Rahardjo
Jurnal SPEKTRUM Vol 6 No 2 (2019): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

This research is conducted to build portable spectroscopy optic with Android and desktop applications. Portable spectroscopy optic consists of Arduino Micro, Nextion Liquid Crystal Display (LCD), 2 pieces Light Emitting Diodes (LED), servo motor, diffraction grating (600 lines/mm), 2 pieces photodiodes, Bluetooth HC-05, and SD Card Reader Writer. Android and desktop applications realized by using Qt IDE. Spectroscopy testing is done using polymers with color red, green, and blue. The result of polymers sample testing shows that the spectrum with same wavelength range as the sample color will be passed, while other wavelengths will be absorbed. The device has been able to measure absorption of sample. On testing restore the test results to the SD card produces file with size about 2 kB. Device uses battery with capacity 3000 mAh and can be actively sustainable during 3 hours 31 minutes. Testing of communication Android and desktop applications with spectroscopy is done using bluetooth and Universal Serial Bus (USB) cable. The result of application testing are already able to send and receive data from spectroscopy.

REVIEW APLIKASI SENSOR PADA SISTEM MONITORING DAN KONTROL BERBASIS MIKROKONTROLER ARDUINO I. M. R. A Anantajaya; I. N. S. Kumara; Y. Divayana
Jurnal SPEKTRUM Vol 8 No 4 (2021): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Arduino microcontrollers have been widely used in research and society. The Arduino isequipped with one or more physical sensors to convert physical quantities into electrical signalsthat can be processed by the microcontroller. This paper reviews sensors, types of Arduino, andtheir application as a monitoring system. Data were obtained from platforms discussing onlineArduino projects, scientific articles, electronic/micro-electronic component manufacturer sites,and other reliable sources. The results show that the sensors that are commonly used includetemperature and humidity sensors DHT11, DHT22, Thermistor and LM35, limit switch touchsensors, proximity sensors HC-SR04, and Paralax PIR, gas sensors MQ2, MQ3, MQ5, MQ6,MQ7, MQ8, and MQ135 correspond to detected gases, ADXL345 and A3144 acceleration andmagnet sensors, TCS3200 and TCS 34752 color sensors, KY-026 and Robotdyn IR firesensors, KY-022 and KY-005 Infrared sensors, LDR and TSL2561 light sensors, voltage-currentsensors ACS712 and PZEM-004T, and heart rate sensors KY-039 and MAX30102. While themicrocontrollers that are often used include Arduino Uno, Arduino Nano, Arduino Mega, andother microcontrollers. Applications that have been developed include applications in the fieldsof health, agriculture and farm, creation of robots, security to vehicles.

PENGARUH PENAMBAHAN SISTEM IOT RASPBERRY PI TERHADAP KECEPATAN CETAK DAN TINGKAT PRODUKTIVITAS OPERATOR 3D PRINTER REPRAP I Putu Ade Chandra Priyatna; I G A P Raka Agung; Yoga Divayana
Jurnal SPEKTRUM Vol 8 No 2 (2021): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Most of desktop-scale 3D printers are based on the open-source design of the ReplicatingRapid Prototyper (REPRAP) community. One aspect that can be developed in REPRAP 3Dprinters is the addition of Internet of Things (IoT) technology. Therefore, a Raspberry Pi-based IoTsystem that can be implemented on a REPRAP 3D printer is developed. The IoT system allowsthe 3D Printer to connect into internet network and has a website-based interface. This study aimsto compare the impact of Raspberry Pi based IoT systems implementation on the 3D printingspeed and to measure productivity level of 3D printer operator. Testing is done by printing fourobjects when the IoT system has not been added to the 3D printer and printing four objects whenthe IoT system has been added to the 3D printer. In testing, the data on the printing time of eachobject is obtained, this data is used to compare the print speed between before and after the 3Dprinter was added to the IoT system. Furthermore from testing, the data of time required byoperators to prepare and monitor the performance of 3D printers is also obtained, this data is usedto compare the productivity levels of 3D printer operators before and after adding the IoT system.Based on the test results, it was found that 3D printers with IoT systems have faster printpreparation times than 3D printers without IoT systems. However, 3D printers with IoT systemshave a longer machine time than 3D printers without IoT systems. The operator productivity levelfor 3D printers with IoT systems is higher than 3D printers without IoT systems.

APLIKASI NUTRINEEDS DALAM PENENTUAN KEBUTUHAN KALORI HARIAN BAGI PENDERITA DIABETES MELITUS Siti Ayu Oktavianti; Yoga Divayana; I Gusti Agung Putu Raka Agung
Jurnal SPEKTRUM Vol 8 No 2 (2021): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

In this journal, an analysis of the NutriNeeds application is carried out. The Nutrineedsapplication is the result of a study that aims to determine daily calorie needs for people withdiabetes mellitus. The level of accuracy of the NutriNeeds application will be compared with theBroca method in determining the daily calorie requirements for people with diabetes mellitus.The NutriNeeds application is designed with the mamdani fuzzy inference system and androidstudio, which uses 7 inputs in the fuzzy inference system, namely gender, male BBI, femaleBBI, age, BMI, physical activity, stress factors, and produces an output, namely calories daily.The NutriNeeds application requires data input, namely gender, weight, height, age, andphysical activity, which will display daily calorie results and meal schedules. The data in thisstudy were 5 pieces of data on patients with diabetes mellitus. Based on the comparison of dailycalories generated by the NutriNeeds application by calculating daily calories using the Brocamethod, the results of the calculation of the percentage of accuracy obtained a MAPE value ofthe NutriNeeds application of 1.1% which is classified as very accurate.

Algoritma Backtracking Pada Perjalanan Pulang Robot Pemadam Api Arya Sukma Krisnayoga; Yoga Divayana; Pratolo Rahardjo
Jurnal SPEKTRUM Vol 6 No 4 (2019): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Kontes Robot Pemadam Api Indonesia or commonly in short KRPAI is a robot competition that has the main mission of putting out fires. During the competition there are several bonus points that must be taken. One bonus that must be taken is the robot able to return home after holding a fire. In this research the KRPAI Udayana University robot will use the backtracking algorithm to return home. The purpose of using backtracking alogritma is to shorten the distance back home to the robot. In KRPAI University robot Udayana use SRF-05 sensors to measure the distance of the robot to the wall and use 18 servo as the driving leg of the robot. the use of backtracking algorithm, the path that has been passed by the robot when looking for fire will be simplified. the results of the simplification of the fire search path will be used as the return route. Based on the test results, using the robot backtracking algorithm is able to minimize the distance traveled when returning home, the room entered is only 1 room, and there is no detecting dolls.

PERKEMBANGAN BATERAI DAN CHARGER UNTUK MENDUKUNG PEMASYARAKATAN SEPEDA LISTRIK DI INDONESIA N. M. A. Wijaya; I. N. S. Kumara; Y. Divayana
Jurnal SPEKTRUM Vol 8 No 1 (2021): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Nowadays electric vehicles begin to grow and are supported by improved batterytechnology such as smaller size and capable of storing large amounts of energy. One type ofsimple electric vehicle is an electric bicycle. This paper reviews the availability of batteries andbattery chargers for electric bicycles in Indonesia. The review includes a discussion on thetechnical specifications, manufacturer, the vendor of the battery, and battery charger. Thesurvey produced a data consists of 117 batteries and 54 chargers and then processed to obtainstatus on the availability in the domestic market. The information regarding the availability ofbatteries and battery chargers for electric bicycles is expected to be used as a quick referencefor the community in choosing batteries and battery chargers for electric bicycles and canprovide an overview to stakeholders about the status of batteries and chargers in conductingresearch and development of batteries and charging equipment for electric vehicles.

DETEKTOR LPG MENGGUNAKAN SENSOR MQ-2 BERBASIS MIKROKONTROLER ATMega 328 Tander Risard Lowongan; Pratolo Rahardjo; Yoga Divayana
Jurnal SPEKTRUM Vol 2 No 4 (2015): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (278.261 KB)

Kebocoran LPG pada rumah tangga menjadi salah satu penyebab terjadinya kebakaran. Untuk menghindari kebakaran akibat kebocoran LPG maka kami merancang bangun perangkat detektor LPG yang dapat mengukur dan menampilkan kadar ppm (part per million) LPG di udara. Detektor LPG ini menggunakan sensor MQ-2 berbasis mikrokontroler ATMega 328. Perangkat detektor ini menghasilkan data berupa nilai ppm (part per million) yang ditampilkan oleh LCD. Detektor ini menggunakan mikrokontroler ATMega 328 sebagai unit pengolah data, sensor MQ-2, buzzer, kipas DC, dan LCD. Proses pengujian alat ini menggunakan tabung LPG, regulator, selang LPG dan box container berukuran 38 cm x 18 cm x 15 cm. Hasil dari perangkat detektor ini berupa tampilan status keadaan LPG, nilai PPM LPG, kipas yang berfungsi sebagai blower untuk mengurangi konsentrasi LPG, dan buzzer untuk memberi peringan kepada pengguna. Perangkat detektor LPG ini diharapkan dapat menghindari kebakaran yang diakibatkan oleh bocornya LPG di masyarakat.

PROTOTIPE PEMBERI PAKAN IKAN DAN PENGGANTIAN AIR PADA AKUARIUM BERBASIS MIKROKONTROLER ATMEGA328P Anak Agung Arta Darmika; I Gusti Agung Putu Raka Agung; Yoga Divayana
Jurnal SPEKTRUM Vol 6 No 2 (2019): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Technological developments have encouraged many human lives in automatic matters. One of the uses of the rapidly developing electronics field is the application of household appliances. This study will be made a prototype of fish feed and water replacement in the aquarium of ATmega328P microcontroller based. This prototype aims to facilitate feeding of fish and replacing water in the aquarium. The sensor reading is using an ultrasonic sensor to control the amount of fish feed which when the feed runs out will be marked with a buzzer that lights up. The system for regulating fish feeding and replacement of water is regulated by the DS1307 Real Time Clock IC with a display in a 20x4 cm LCD. A valve opening for fish feed containers uses a servo motor. The program used in designing this prototype is to use the C Programming Language. The results achieved in this study are fish feed schedules and water changes can be arranged with a switch button with a twice daily feeding schedule and water replacement every three days. Another condition that is achieved is the servo motor and the water drain pump can work according to the schedule of the time that has been arranged. The conclusion of this research is that the prototype of fish feed and water replacement can already be implemented using the ATmega328P microcontroller. The fish feeder prototype can realize wave reflections from the ultrasonic sensor when the feed has run out, and it will automatically move the servo motor to open the valve, and the buzzer will sound if the fish feed is below 20%.

SELF-STABILIZING 2-AXIS MENGGUNAKAN ACCELEROMETER ADXL345 BERBASIS MIKROKONTROLER ATmega8 I Nyoman Benny Rismawan; Cok Gede Indra Partha; Yoga Divayana
Jurnal SPEKTRUM Vol 2 No 3 (2015): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1407.757 KB)

Penelitian ini mengembangkan piranti Self-Stabilizing 2-Axis menggunakan accelerometer ADXL345 berbasis mikrokontroler ATmega8. Piranti ini terdiri dari dua frame yaitu frame-stabil dan frame- bebas. Frame-stabil difungsikan untuk menunjang beban dan frame-bebas untuk menerima input perubahan kemiringan. Seluruh komponen elektronik dan mekanik ditempatkan pada frame-bebas guna mengurangi beban pada frame-stabil. Accelerometer ADXL345 diimplementasikan untuk mendeteksi kemiringan (x,y). Dua motor servo digerakan mikrokontroler berdasarkan nilai sensor untuk mencapai posisi stabil. Penelitian ini mendapatkan bahwa piranti Self-Stabilizing 2-Axis mendeteksi kemiringan dan menampilkan nilai kemiringan pada Liquid Crystal Display serta dapat menstabilkan frame-stabil ketika bagian luar alat mengalami perubahan kemiringan dari +90o hingga -90o. Hasil pengujian beban maksimal ±750 gram. Self – Stabilizing 2-Axis mendeteksi kemiringan dengan kesalahan 0,45 % pada sumbu X dan 0,05% pada sumbu Y.

ED-255EK Embeded Education Platform Sebagai Modul Praktikum Embeded System Dengan Robot Arm Module Dan Voice Module I Nyoman Edy Saputra; IGAP Raka Agung; Yoga Divayana
Jurnal Teknologi Elektro Vol 18 No 1 (2019): (Januari - April) Majalah Ilmiah Teknologi Elektro
Publisher : Universitas Udayana

Abstract— Literally embedded systems are defined as equipment that computes a particular job. Embedded Linux System was also developed as a means of education, one of which is ED-255EK Embedded Education Platform, designed to be very practical and consume very low power. ED-255EK is also equipped with a PXA255 processor that is compatible with ARM version 5TE ISA, so it can be used to carry out various kinds of lab work or experiments on embedded systems. The working principle of this tool begins with the configuration of data communication between Fedora Linux and ED-255EK. When the communication goes well, it is downloaded by the ED-255EK system to a laptop or computer that has been installed with the Fedora 9.0 Linux operating system. To take advantage of the ED-255FPGA module, driver module installation is required first, after which the application program is installed. Laptops or computers that have installed the Fedora 9.0 Linux operating system will act as input and output programs making it easier to monitor each module that is being run. The module used is the ARM 1923 Robot Module and Voice Module ED4321.

Co-Authors Alie Sulthan, Mayben Sayyidina Amien Harist Hardiansyah Anak Agung Arta Darmika Anak Agung Ngurah Mahendra Wijaya Arya Sukma Krisnayoga Darmawan, I Gede Hadi Debbi Irfan Mudhoep Elba Duta Nugraha, I Putu Gede Humaswara Prathama Gede Prananda Putra Gede Sukadarmika Hernandi, William I Gede Hadi Darmawan I Gede Yogi Astawan I Gst Agung Putu Raka Agung I Gusti Ngurah Yoga Pawitra I Kadek Krisna Angga Pamungkas I Made Arya Budhana I N Satya Kumara I Nyoman Benny Rismawan I Nyoman Edy Saputra I Putu Ade Chandra Priyatna I Putu Astya Prayudha I Putu Sudharma Yoga I. M. R. A Anantajaya Ida Bagus A. Swamardika Ida Bagus Agung Eka Mandala Putra Ida Bagus Leo Mahadya Suta Indra Christian, Febry Kadek Bintang Anjasmara Komang Edy Surya Prabowo Komang Nova Artawan Komang Oka Saputra Linawati Linawati Lintang Pramudya Luh Ika Dhivtyasari Suryani Made Dwi Mulyawan Moch. Farhan Arieffadillah Muhammad Namiruddin Al Hasan N. M. A. Wijaya Ni Ketut Novia Nilasari Ni Luh Ade Mita Rahayu Dewi Ni Made Ary Esta Dewi Wirastuti Oka Saputra, Komang Pramudya, Lintang Pratolo Rahardjo Purwania Ida Bagus Gede Putri Suardani Rukmi Sari Hartani Rukmi Sari Hartati Rukmi Sari Hartati Siti Ayu Oktavianti Surya Pramana Tander Risard Lowongan Tjok Gede Indra Partha Wayan Widiadha Wijaya, Anak Agung Ngurah Mahendra Yohanes Andre Setiawan

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