User manual

Ausgabe 11.12.2017 Copyright by Joy-IT 7

3.2 / 3.5 Touch-Display

The required drivers are now needed to be installed.

Therefore, the Raspberry Pi needs to be connected to the internet.Choose your display size and enter the three

commands.

Commands for the 3.2“ LCD

Commands for the 3.5“ LCD

3. Using the buttons on the 3.2“ TFT

There are three buons mounted to the side of the display. These buons are assigned to the following

GPIO connecons of the Raspberry Pi:

By pressing the buon, the associated signal is pulled to GND (Acve_LOW).

4. Calibrating the touchscreen

If necessary, you can calibrate the touchscreen with the following steps:

At rst, download and install the calibraon-tool with the following command:

By using the command…

...you can start the tool. You will now see 4 points, one aer another, on the display.

cd /tmp

wget anleitung.joy-it.net/upload/joy-IT-Display-Driver-32b-overlay.dtb

sudo cp joy-IT-Display-Driver-32b-overlay.dtb /boot/overlays/joy-IT-Display-Driver-

32b-overlay.dtbo

cd /tmp

wget anleitung.joy-it.net/upload/joy-IT-Display_Driver-35a-overlay.dtb

sudo cp joy-IT-Display_Driver-35a-overlay.dtb /boot/overlays/joy-IT-Display_Driver-

35a-overlay.dtbo

TFT Raspberry Pi

Key 1 GPIO12

Key 2 GPIO16

Key 3 GPIO18

sudo apt-get install -y xinput-calibrator

DISPLAY=:0.0 xinput_calibrator