beginnerChapter 4 of 420 min

Read a sensor

Wire a DHT22, read it reliably, and send the numbers somewhere you can see them.

Wiring the sensor

Placeholder. This chapter has its template and its place in the series; the writing is still to come.

Check it worked

Related

Put a DHT22 on the internet in 20 minutes — Wire a temperature and humidity sensor to an ESP32-S3, and watch the readings land on a live dashboard you can open from your phone. No backend, no server, no port forwarding.
DHT22 and DHT11 Temperature and Humidity Sensors — Two sensors on one board design, one data wire, one library. What each is worth, why the same forty bits decode two ways, and the six-pack that holds three of each.

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