ESP32 Forum

The HMC5883L is an easy to use and cheap module for measuring magnetic fields. A common purpose is to use the device to determine magnetic north ... and hence that makes it a compass. In this video and related code link, we use the ESP32 to read data from it.

https://www.youtube.com/watch?v=4JUnS0wViaQ

Code:
https://github.com/nkolban/esp32-snippe ... re/compass