Touchscreen calibration

Use the Raspberry OS that we provide

• On the Terminal, enter

 sudo su
 DISPLAY=:0.0 xinput_calibrator

Then the sreen will show 4 points. You need to click 4 points step by step to calibrate. After calibration, you will get 4 new calibration numbers. Copy them.

• On the Terminal, enter

 sudo nano /usr/share/X11/xorg.conf.d/01-input.conf

 Use the 4 new numbers replace the 4 old numbers ,Press the keyboard “Ctrl + X” ,then choice “Y”, Press the  ”Enter” exit.

• On the Terminal, enter

sudo reboot

After reboot ,the calibration will be ok

Use your own Raspbian OS(Such as official Raspbian OS)

• Download the xinput calibration software .Copy it to your Raspbery Pi
• Install the software.On the Terminal, enter

 sudo dpkg -i -B xinput-calibrator.deb

• On the Terminal, enter

 sudo su 
 DISPLAY=:0.0 xinput_calibrator

 Then the sreen will show 4 points. You need to click 4 points step by step to calibrate. After calibration, you will get the following. Copy them.

• On the Terminal, enter

 sudo mkdir /etc/X11/xorg.conf.d
 sudo nano /etc/X11/xorg.conf.d/99-calibration.conf

 Past what you have copied just now to the file

 Press the keyboard "Ctrl + X" ,choice the "Y" ,Then press ”Enter”  to save the file

• On the Terminal, enter

 sudo reboot

 After reboot ,the calibration will be ok