Design of Gelugur Acid (Garnicia Antroviridis) Dryer Using ESP32 Based on Internet of Things (IoT)

This research aims to design a system for gelugur tamarind dryer and test gelugur tamarind dryer using ESP32 microcontroller. This research uses an experimental method by using ESP32 as a data processing tool given by the DHT22 temperature sensor, then designing temperature and time controls, as well as designing mechanical and electronic devices for the gelugur tamarind dryer. Gelugur acid is dried to be used as a mixture of food or spices. In this tool, the temperature for drying can be adjusted as desired, each temperature set then gets different results. In this drying process is done for hours, in order to get optimal results. The results showed that the original weight of 500 grams of gelugur acid had been dried and sampled within 4 hours with a temperature of 60ºC that had been programmed, and when dry the weight of the acid was reduced to 140 grams if the percentage was 28%. The conclusion that the longer the drying, the less the weight of the acid that was originally wet. The presence of a temperature and time control system shows that this dryer can dry various raw materials, not limited to gelugur acid.