Aosong AHT20/DHT20 Sensor Raspberry Pi Pico SDK example

An example / demo of periodically fetching temperature and humidity values from the sensor, and updating them on the standard output. The example code uses the dht20-pico library.

CAUTION: USE 3.3V RAIL FOR POWERING THE AHT20/DHT20 SENSOR, USING 5V FOR POWER CAN LEAD TO A BRICKED RP2040 DUE TO INCORRECT I2C BUS VOLTAGE

Getting started

Repository contains pico sdk and dht20-pico as submodules. Before compiling run

git submodule init && git submodule foreach "git submodule init && git submodule update"

Usage

To build the software run following commands.

mkdir build
cd build
cmake ..
make

Copy the resulting dht20_example.uf2 on your Pico. Be sure to connect the correct i2c pins. Raspberry Pi Pico defaults are pins 6 and 7.