All-in-One Application For Smart Home System Base on Telegram Controlled

The integration between smartphone and home can create a smart home system. Smart Home is defined as a residence that uses a control system to integrate various automation systems in the home. This research aims to design a smart home control based on Telegram chat. The automatic control system created in this research uses ESP32. ESP32 is a microcontroller equipped with 2.4 GHz Wi-Fi and Bluetooth technology, the ESP32 development kit can be easily found on the market at a low price. LDR sensor used to automatically turn on/off the lighting system. DHT11 was used to measure the room temperature and humidity and controlling the fan. The alarm delay time on the door shows an average of 0.0375 seconds and on the window 0.0358 seconds. The DHT11 sensor temperature reading has an average difference of 0.64 C with a Thermometer. The DHT11 sensor humidity reading has an average difference of 10.3% with the Hygrometer.