Design and Construction of A Corn Sheller Powered By A Solar Power System With an ESP32 Based Control System in Sukosewu Village Gandusari Subdistrict Blitar Regency

Abstract

This study aims to design a corn sheller machine based on a solar power generator with an ESP32 microcontroller in Sukosewu Village, Gandusari District, Blitar Regency. The machine uses a 50 Wp solar panel and a 12V 22Ah LiFePO₄ battery as its power source. A 1200W DC-DC Step-Up Converter boosts the voltage to 18V for the DC motor 895, while a DC-DC Step-Down XL4015 lowers it to 5V for the ESP32, INA260 sensor, relay, HX711, and I2C LCD. Test results show the solar panel generates an average of 42.64 Watts per day, requiring about 5 days to charge the battery to 80%. The INA260 sensor shows an average error of 7.74% for voltage, 7.06% for current, and 1.36% for power compared to a digital multimeter, while the Load Cell shows an average error of 0.82 % compared to a digital scale. This device achieves a productivity rate of 7.604 grams per second, while the traditional method only reaches 1.946 grams per second, a difference of 5.673 grams. The average efficiency using the device reaches 77.88%, while the traditional method only achieves 62.74%. These results indicate the device operates efficiently.