Using the DHT22 sensor with the Raspberry Pi Pico
In contrast to the Arduino Nano, the Raspberry Pi Pico requires an external sensor module and an additional software library to measure the temperature and humidity.
In this recipe, we will show how to use the DHT22 sensor with a Raspberry Pico to get temperature and humidity measurements.
The following Arduino sketch contains the code referred to in this recipe:
07_sensor_rasp_pico.ino:
Getting ready
The temperature and humidity sensor module considered for the Raspberry Pi Pic is the low-cost AM2302 that you can get either from Adafruit (https://www.adafruit.com/product/393) or Amazon.
As shown in the following diagram, the AM2302 module is a through-hole component with three pins that integrates the DHT22 temperature and humidity sensor:
Figure 3.19 – The AM2302...
