Yes you should be able to use a touchscreen.

From here (https://github.com/Audio-Injector/stereo-and-zero/issues/18) the pins used exclusively by the sound card are the : i2s lines : 12, 35, 38, 40

Power, GND and I2C are shared.

Matt

On 16/7/20 6:24 am, James McGregor-Macdonald via People wrote:

Hi all,

I've purchased a stereo soundcard and while waiting for it to arrive I'd like to purchase a touchscreen for my Raspberry Pi 4. Is it possible to use an HAT touchscreen on top or does the soundcard require exclusive use of some of the necessary pins?

Thanks!

James

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