So here’s a temperature and humidity sensor for your 3d printer enclosure or filament box, that displays the humidity percentage and temp in Celsius on a lcd screen. It’s made using an Arduino Uno R3
1—DHT sensor (dual humidity and temperature sensor)
1— lcd 2 line display
Insert the DHT into the breadboard,
connect the left most pin to digital pin #2 on the arduino
Connect the middle pin to the positive rail on the bread board
Connect the right pin to the negative rail on the bread board
Insert the potentiometer into the bread board.