Article Per Year (5 Year)
p-Index From 2020 - 2025
0.408
P-Index
This Author published in this journals
All Journal Vokasi UNESA Bulletin of Engineering, Technology and Applied Science
Nawawi, Akhmad
Unknown Affiliation
Computer Science & IT Engineering Mechanical Engineering Transportation

Published : 2 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search

 1 
Off-Grid Solar System Monitoring based on ESP-32 and INA219 In Pesanggrahan Gordomulyo permana Muqorrobin, zufar; Nawawi, Akhmad; Aris Ardani, Achmad; Putra Setia, Singgang; Rahmadian , Reza
Vokasi Unesa Bulletin of Engineering, Technology and Applied Science Vol. 1 No. 2 (2024)
Publisher : Universitas Negeri Surabaya or The State University of Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/vubeta.v1i2.34859

Abstract

The main problem in the highland area of Pesanggarahan Gordo Mulyo is the difficulty of monitoring and maintaining PLTS due to the remote location and no reliable communication signal. As a solution, this research developed a remote PLTS monitoring system using ESP32 and Handy Talkie communication, which allows automatic data transmission without internet connection. This research contributes to the optimization of the monitoring system adapted to the surrounding environmental conditions. Testing has 3 categories, in the PV solar panel monitoring test, the highest voltage is 37.1 V, the highest current is 2.1 A, and the maximum power generated is 81 W. Error calculations are also carried out to see the performance of the INA219 sensor with a multimeter measuring instrument, the test results for voltage, current, and power are 0.3%, 1.8%, and 1.26%. The last test is sending data in the form of voice through HT transmission, the data sent is similar to the data received in five tests. Based on each test, this tool has a small error rate, so it can be one of the innovations in the world of monitoring solar power plants.
Performance of LoRa SX1278 Using Yagi Antenna Nawawi, Akhmad; Hermawan, Aditya; Wardani, Ayusta
Vokasi Unesa Bulletin of Engineering, Technology and Applied Science Vol. 1 No. 1 (2024)
Publisher : Universitas Negeri Surabaya or The State University of Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/vubeta.v1i1.34348

Abstract

This study examines the use of Yagi antennas to extend the LoRa SX1278 transceiver's range, focusing on enhancing communication distance and reducing signal loss. LoRa, a low-power wireless technology, enables long-distance transmission ideal for sensor data, reaching up to 15 km in rural areas and 1-5 km in urban environments. By adjusting impedance, the Yagi antenna improves LoRa signal range and quality by focusing transmission directionally, reducing interference. The test results show that the yagi antenna has better coverage and signal strength than the spring antenna. Testing horizontal conditions with 3 different locations shows that antenna design greatly affects the transceiver of data. The Yagi antenna with modified impedance has the ability to transmit the farthest distance of 6250 meters. Horizontal testing with a fairly short distance is not too significant a difference in the rssi value of the two antennas, but in terms of reception category, the spring antenna is still not good. Test results show that the Yagi antenna significantly outperforms the spring antenna, maintaining better signal strength at longer distances due to its effective electromagnetic energy focus.
Co-Authors Aditya Hermawan, Aditya Aris Ardani, Achmad permana Muqorrobin, zufar Putra Setia, Singgang Rahmadian , Reza Wardani, Ayusta