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 ...

ILI9486_SPI for Arduino This library supports ILI9486 SPI TFT to use with Adafruit_GFX The code is extracted from GxTFT and adapted for single controller use and Adafruit_GFX. Can be used with the ...