Have you ever spotted something in a catalog or on a website and just known you had to build a project around that one part? That’s how [nilseuropa] felt about the Waveshare ESP32-S3-RLCD-4.2, which — ...
This will not work with Arduino IDE 1.6.5 (or below) or with non ESP32-S2/S3 devices (e.g. Arduino UNO, Arduino MEGA, etc.). To use this library you need to have Arduino core for the ESP32 installed.
Both of these sensors use the MMC5983MA from MEMSIC - a highly sensitive triple axis magnetometer capable of sensing down to 0.4mG, enabling a heading accuracy of ±0.5°. Output rates of 1000Hz, ±8G ...