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Journal : Jurnal E-Komtek

Design and Build Rainfall Intensity Monitoring Tools and Wind Direction Indicators in Weather Station Systems Yuni Ananda, Viyanti; Endah Fitriani
Jurnal E-Komtek (Elektro-Komputer-Teknik) Vol 9 No 1 (2025)
Publisher : Politeknik Piksi Ganesha Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37339/e-komtek.v9i1.2382

Abstract

Weather element data is very useful for knowing the climatology of an area, so that humans can take advantage of these weather conditions according to the needs of each party. The most influential weather phenomena are rain and wind. To see how much rain intensity and wind direction a place is, a rainfall and wind direction monitoring system is made in the weather station system. The purpose of designing this monitoring system is to monitor and get information data easily about rain and wind conditions in a place. For the measurement of the rainfall parameters, a tipping bucket type rain gauge is used and for wind direction indicators use the Wind Direction sensor as a wind direction indicator sensor. This system is made using other devices between the hall effect sensor, microcontroller, and NodeMCU Wifi ESP32 and uses blynk to display information from the monitoring tool. This system is expected to help users to find out information about the intensity of rainfall and wind direction indicators in an area.
RANCANG BANGUN ALAT PENGHITUNG BIBIT IKAN LELE BERBASIS MIKROKONTROLER Engla Desita; Endah Fitriani
Jurnal E-Komtek (Elektro-Komputer-Teknik) Vol 9 No 2 (2025)
Publisher : Politeknik Piksi Ganesha Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37339/e-komtek.v9i2.2702

Abstract

Catfish farming in Indonesia has significant potential; however, conventional methods of counting fish fry still face various challenges, such as the considerable time required and a high risk of errors. This study aims to design and build an automatic counting device for catfish fry based on the Arduino Mega 2560 microcontroller, integrated with an E18-D80NK infrared proximity sensor and a DS18B20 temperature sensor. The device is specifically designed to count catfish fry measuring between 6 to 8 cm, where the infrared proximity sensor is used to count the number of fish fry passing through, while the DS18B20 sensor functions to detect the water temperature in the holding tank. The operational process of the device includes inputting the number of fry via a 4x4 keypad, opening the counting path using a servo motor, measuring the water temperature, displaying data on a 16x2 LCD, and closing the path after the counting process is completed. The test results indicate that the DS18B20 sensor has an accuracy of 97.68% with an average error of 2.32%, while the infrared proximity sensor achieves an accuracy of 89.08% with an average error of 10.92%. This device successfully counts the number of catfish fry automatically, monitors the water temperature, and displays information in real-time on the LCD. Therefore, the catfish fry counting device based on the Arduino Mega 2560 is expected to enhance time and labor efficiency, as well as minimize errors in the counting and distribution processes of catfish fry.
APLIKASI METODE CONSTANT CURRENT PADA SISTEM PENGISIAN BATERAI LEAD – ACID BERBASIS FAST CHARGING Metasari, Ella; Endah Fitriani
Jurnal E-Komtek (Elektro-Komputer-Teknik) Vol 9 No 2 (2025)
Publisher : Politeknik Piksi Ganesha Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37339/e-komtek.v9i2.2717

Abstract

Air pollution caused by fossil fuel-powered vehicles has a significant impact on public health and the environment, encouraging the transition to electric vehicles in accordance with Presidential Regulation No. 55 of 2019. Electric vehicles use batteries as their main energy source, making a safe charging system essential to prevent overcharging. This study designs a lead-acid battery fast charging system based on the Constant Current (CC) method with a constant current of 2.7 A, equipped with an automatic cut-off. Testing was conducted through field observation, interviews, and literature review. Results show that the charging time is only ±3 hours 13 minutes, significantly faster than the conventional method (10 hours), with component measurements within tolerance limits. The PZEM-017 and voltage divider sensors accurately read voltage according to the datasheet. This system proves to be efficient, safe, and capable of preventing battery damage due to overcharging.