I chose the DHT11 / DHT22 sensor because it reads a couple values and uses digital logic.  The small ESP-01 module only has two digital pins free (GPIO0 and GPIO2). No analog pin is available so using a TMP36 sensor is out.

So what other digital sensors would also work:

Changing up the Internet interface and sending readings to Adafruit.io would be great also.  It is all up to you.

This guide was first published on May 06, 2015. It was last updated on Mar 08, 2024.

This page (Going Further) was last updated on Mar 08, 2024.

Text editor powered by tinymce.