home extractor automation
A residence with more vertical floors needs a hot air exhaust system in places with temperate temperatures. Then an extractor hood was installed on the top floor and the project was applied to control the extractor through the Arduino. An Arduino Mega 2560 board, a DHT22 temperature and humidity sensor, an LCD 1602a display, and a two channel relay module were used. Temperature values have been set so that the hood automatically switches on and off, thereby controlling excess temperature on the upper floor. Bench tests were carried out with a protoboard (as we call it in Brazil), and after everything was working it was installed in the field. The project is working and will later be improved with the addition of sensors for other purposes.