This is a MicroPython library for the Raspberry Pi Pico and the DHT20 temperature and humidity sensor.
from machine import Pin, I2C
from utime import sleep
from dht20 import DHT20
i2c0_sda = Pin(8)
i2c0_scl = Pin(9)
i2c0 = I2C(0, sda=i2c0_sda, scl=i2c0_scl)
dht20 = DHT20(0x38, i2c0)
while True:
measurements = dht20.measurements
print(f"Temperature: {measurements['t']} °C, humidity: {measurements['rh']} %RH")
sleep(1)measurements is a dictionary that contains the following values:
| Field | Description |
|---|---|
| t | The temperature (°C) |
| t_adc | The 'raw' temperature value as produced by the sensor |
| rh | The relative humidity (%RH) |
| rh_adc | The 'raw' humidity value as produced by the sensor |
| crc_ok | The result of the Cyclic Redundancy Check (True or False) |
This is the circuit for the example code above:
