Touchscreen calibration

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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.
3.5inchCali1.jpg
  • 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.

3.5inchCali2.jpg

  • 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

3.5inchCali3.jpg

 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