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All Journal GEMA TEKNOLOGI
Saiful Manan
Universitas Diponegoro
Computer Science & IT

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Rancang Bangun Sistem Solar Tracker Dual Axis Dengan Mekanisme Pan-Tilt Untuk Meningkatkan Daya Keluaran Panel Surya Sutriyani Lapian; Saiful Manan
Gema Teknologi Vol 22, No 4 (2024): October 2023 - April 2024
Publisher : Vocational School Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/gt.v22i4.90306

Abstract

This final project aims to design a two-axis solar tracking system with a pan-tilt mechanism. The system uses six light sensors (LDRs) and two servo motors to automatically adjust the position of the solar panel so that it remains perpendicular to the incoming sunlight. Four LDR sensors are used to move the servos horizontally, while the other two LDR sensors control vertical movement. To enhance directional sensitivity, each LDR sensor is enclosed in an 8-cm-long tube. The system uses an Arduino UNO microcontroller and is equipped with an RTC for time-stamping and an SD card module for data storage. System testing was conducted to evaluate sensor performance, servo motor movement, and solar panel power output. The test results showed that the system works well, with the LDR sensors and servo motors interacting effectively to track the sun’s movement, as demonstrated by the servo motors’ dynamic response to changes in light intensity. In terms of power, the system proved capable of optimizing energy absorption. Under sunny conditions, the maximum power generated reached 5.83 W. Although this did not reach the panel’s peak power specification (10 Wp), this difference was due to weather factors and less-than-ideal outdoor testing conditions.
Rancang Bangun Pintu Irigasi Otomatis Pada Lahan Persawahan Padi Menggunakan Sensor Water Level Ningrum Dwi Astuti; Saiful Manan
Gema Teknologi Vol 22, No 3 (2023): April 2023 - October 2023
Publisher : Vocational School Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/gt.v22i3.90298

Abstract

Irrigation systems are one of the key factors in supporting agricultural productivity, particularly in rice paddies. This study aims to design an irrigation gate system capable of automatically regulating water flow. The system utilizes a water level sensor (float switch), a fuel sensor, a solenoid valve, a water pump, and an Arduino Uno microcontroller as the main control center, which provides HIGH and LOW digital logic signals to regulate the system’s operating conditions. Test results show that the designed prototype of the automatic water flow gate control system for rice paddy irrigation channels can detect water level conditions based on information from the water level sensor (float switch). When the maximum level is reached, the sensor sends a HIGH signal, which automatically closes the solenoid valve and shuts off the water pump. Conversely, when the rice paddy is dry or the water level reaches the minimum threshold, the system opens the solenoid valve—which acts as the irrigation gate—and activates the pump. This system has been able to operate stably in accordance with the irrigation needs of rice crops in the paddy fields, thereby making farmers’ work easier.
Co-Authors Ningrum Dwi Astuti Sutriyani Lapian