Help with 3.5 display and pi2B

Help and Support Help
1

I’ve been trying to follow this guide Volumio with 3.5" TFT Touch Screen (GPIO) RPi 3B+
but I cant seem to get my LCD screen to show anything but a white image. is there any troubleshooting I can do? any help is appreciated!

2

Please post the brand and exact model name of your display.

3

Unfortunately I think it’s a random no name from Ali express, I got it from a relative and didn’t buy it myself.

4

Could you post pictures of both sides of the display’s board?

5

GridArt_20230709_201755078
GridArt_20230709_2017550781920×1920 299 KB

Thanks:)

6

I suggest to start with a fresh Volumio installation and then proceed as follows:

  1. Install the Touch Display plugin.

  2. Connect to Volumio via SSH.

  3. Execute

    sudo apt-get -y install xserver-xorg-video-fbturbo

    sudo apt-get -y install xserver-xorg-input-evdev

    sudo cp /usr/share/X11/xorg.conf.d/10-evdev.conf /usr/share/X11/xorg.conf.d/45-evdev.conf

    sudo curl -L https://github.com/goodtft/LCD-show/raw/master/usr/tft35a-overlay.dtb -o /boot/overlays/tft35a.dtbo

    sudo curl -L https://raw.githubusercontent.com/goodtft/LCD-show/master/usr/99-calibration.conf-35-90 -o /etc/X11/xorg.conf.d/99-calibration.conf

    sudo curl -L https://raw.githubusercontent.com/goodtft/LCD-show/master/usr/99-fbturbo.conf -o /usr/share/X11/xorg.conf.d/99-fbturbo.conf

    cat >> /boot/userconfig.txt <<EOL

dtparam=spi=on
dtoverlay=tft35a
EOL

  4. Reboot.

7

It worked, thanks a ton! Would it also be possible to connect the pi using a wifi dongle?

8

In principle, yes; however, I can’t say which adapters will work. You will find some threads on this topic using forum search, e.g. this one. To get more attention to your question, I suggest posting there or creating a new thread with an appropriate title.

9

Alright thanks, was planning on using an esp01s but I’ll create a different topic. On topic, is there a way to rotate the screen? Using the plugin dosent seem to work. Also is there some sort of calibration I can run for the touchscreen? Dosent really seem to work.

10

Yes, by how many degrees (clockwise) do you want to rotate the display - 90, 180 or 270 degrees?