Raspberry pi 3.5 inch touchscreen calibration
The RPi LCD can be driven in two ways: Method 1. install driver to your Raspbian OS. Method 2. use the Ready-to-use image file of which LCD driver was pre-installed.
Method 1. Driver installation
1. Download the lasted image from Raspberry Pi website and write it to SD card.
2. Connect RPi LCD to Raspberry Pi and connect Pi to networking.
3. Configure your Pi:
Select Expand Filesystem.
Boot Option -> Desktop Autologin (may differ depending on Raspbian revision)
3.Open Terminal of Raspberry Pi (You may need to connect an keyboard and HDMI LCD to Pi for driver installing)
git clone https://github.com/waveshare/LCD-show.git cd LCD-show/
Note: Net work connection is required while installing driver to your Pi, or else the touch won't work properly.
chmod +x LCD35-show ./LCD35-show
3. After system rebooting, the RPi LCD is ready to use.