This repository contains a program to calibrate a 3.5" touch screen display shield, as shown below - Most 3.5" TFT LCD Touch displays use the ILI9486 Display Driver and include a resistive touchscreen ...

MMC5883MA Arduino Library For use with the Duinotech 3 Axis Compass Magnetometer Module I'm not sure who the author of this code is. Let me know and I will include attribution. The Duinotech 3-Axis ...