To differentiate between the two readings, the DHT22 makes use of a simple protocol on a single data pin which is best interpreted by using existing library code. The instructions below show how to connect the DHT22 up to your Particle Argon, and take you through the process of finding and including the right library in your application code using the Web IDE.

This example is based on the Adafruit version that is provided with the library code, and the Photon Maker Kit tutorial linked in the box above.