Custom Screen Problem

Hi all.

I built myself a pocket Zynthian powered by a P4 (4GB) 64GB SD and I was wondering if you could help me setup the screen?

This is the screen I bought.

The official drivers for the screen are located here.

http://www.lcdwiki.com/MHS-3.5inch_RPi_Display

If I were to run Raspbian on the Pi, the manual for the screen says I’m to enter in the following into the terminal.

sudo rm -rf lcd-show

git clone https://github.com/goodtft/LCD-show.git

chmod -R 755 LCD show

cd LCD-show/

sudo ./MHS35-show

Which works perfectly for Raspbian.

Getting the display to work right for Zynthian is a problem though. If I go to the terminal and enter in the commands, it fails on “chmod -R 755 LCD show” saying no such file or directory.

If I ignore the error and continue, the installation proceeds and the display shows the Zynthian logo, but then displays a lot of text and no Zynthian GUI.

Any idea’s on what the best approach is to get this display working with Zynthian? Using the Web Config, if I select PiScreen 3.5 V2, the screen does work, but the image quality looks 256 colours and the touch screen is all inverted and flipped.

Kind regards
James

1 Like

Have a look here… Joy It 3.2 (Waveshare clone) display not working

Thank you kindly for your help.
I’m up and running :slight_smile:

It maybe of help to others to know…

I made a change to this file.
/zynthian/config/zynthian_custom_config.sh

I added this information.
DISPLAY=:0 xinput --set-prop ‘ADS7846 Touchscreen’ ‘Coordinate Transformation Matrix’ 1 0 0 0 -1 1 0 0 1

Kind regards
James.

2 Likes

You shouldn’t change that file. There is a custom directory. If you have changes, that screen should get its own entry in the webconf, so that that file is drawn automatically. You don’t want to do this with every new image you install

It would be nice to qhave a custom display for this setup it seems quite popaular