Sensors

Compatible sensors

Module	Purpose	Where to Buy
DHT11	Temperature, Humidity	parts list (opens new window)
DHT22	Temperature, Humidity	parts list (opens new window)
HCSR501	PIR	parts list (opens new window)
BH1750	Digital light	parts list (opens new window)
BME280	Temperature, Humidity, Pressure	parts list (opens new window)
BMP280	Temperature, Pressure	parts list (opens new window)
C-37, YL-83, HM-RD	Leak, Water	parts list (opens new window)
HTU21	Temperature, Humidity	parts list (opens new window)
GPIO Input	Inputs	-
GPIO KeyCode	Keycode	parts list (opens new window)
INA226	Current, Voltage	parts list (opens new window)
MQ2	Gas (flammable)	parts list (opens new window)
TEMT6000	Luminosity	parts list (opens new window)
TSL2561	Luminosity	parts list (opens new window)

Pinout

Module	Arduino Pin	ESP8266 Pin	ESP32 Pin
Analog reading	A0	A0	A0
BH1750 SDA	A4	D2	21
BH1750 SCL	A5	D1	22
BME280/BMP280 SDA	A4	D2	21
BME280/BMP280 SCL	A5	D1	22
C-37, YL-83, HM-RD	A0 + D14	A0 + D14	A7 + D14
DHT11/22	D8	D1	16
HC-SR501/HC-SR505	7	D5	5
HTU21 SDA	A4	D2	21
HTU21 SCL	A5	D1	22
INA226 SDA	A4	D2	21
INA226 SCL	A5	D1	22
MQ02	A0 + D4	A0 + D4	A0 + D4
TEMT6000	A0	A0	A0
TSL2561 SDA	A4	D2	21
TSL2561 SCL	A5	D1	22

Vcc pin of the board and the Module to a 3.3V or 5V supply source depending on sensor voltage requirement. Ground pins of the board and the Module to the ground of the supply source.