Instructions

Published: 16.08.2019 Copyright by Joy-IT 8
3.2“ / 3.5“ Touch-Display
Calibraon for the 3.2 "display:
If calibraon of the touchscreen is necessary, this can be done with the following
Steps are performed. First, the calibraon tool needs to be downloaded.
To do this, open a terminal window and enter the following command:
Now restart your Raspberry Pi so that the touch display is recognized correctly:
Now the calibraon can be started with the following command:
There are now four consecuve points lit, which must be pressed to calibrate the display. Subsequently,
four calibraon values are output in the terminal. To save the calibraon, the seng must be saved to a
le.
Create a new folder:
Now create the le in which the sengs must be saved:
The entry should look like the following example (the values aer "Calibraon" may dier from your
values):
5. TOUCHSCREEN KALIBRIERUNG
sudo apt-get install -y xinput-calibrator
DISPLAY=:0.0 xinput_calibrator
sudo reboot
sudo mkdir /etc/X11/xorg.conf.d
sudo nano /etc/X11/xorg.conf.d/99-calibration.conf
Section "InputClass"
Identifier "calibration"
MatchProduct "ADS7846 Touchscreen"
Option "Calibration" "171 3720 3899 196"
Option "SwapAxes" "0"
EndSection