Open Arduino IDE, search for "DFRobot_GNSS" on the status bar in Tools ->Manager Libraries and install the library. Download the library file before use, paste it into \Arduino\libraries directory, ...

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 ...