Touch not working - Pi4 7" 1st gen display

Audio Gear Talk RoPieee
1

I had these lying around so decided to make a display/control for one my zones.

The display shows the zone correctly with the controls, but the touch input does not work.

It works nowhere on the screen.

Tried using Auto-detect for the screen type as well as selecting the correct 7" 1st gen screen. Neither work

Any ideas on where to start looking?

@spockfish Any suggestions?

2

I suggest you look at the connection and power supply. This seems like touch in general is not working, which to me sounds like a hardware issue.

1 Like
3

The power supply was the problem. I originally had the screen taking power for the Pi’s GPIO pins.
Using a separate power supply for the screen solved the problem.

Thanks

1 Like
4

@mvrlogins That shouldn’t be a problem, as long as your power supply delivers enough current.
I am using RPI3B+ with 1st gen display connected via the GPIO pins. The powser supply is 5V 4A (= 20W). But using a separate power supply for the display is also a good solution.
Kind regards, Frank.

1 Like