Using other GPIO Pins with the RetroPie Adapter

[tman140]

I would like to use two other GPIO pins, and wondered if it would be possible with the adapter. What pins are available and, if any are, how would I wire into them?

(Sorry if this has already been posted, though I didn’t see anything when i ran a few searches)

[petrockblog]

Yes – the adapter breaks out four additional pins: 0, 14, 21, and 22. The schematics of the RetroPie GPIO Adapter are available at https://www.petrockblock.com/?wpdmdl=7. In addition, GND and 3.3V are broken out.

I hope that helps!?

[tman140]

That helps a little bit, although i am unsure where the pins are broken out on the actual board???

[petrockblog]

You could access the pins, e.g., with a 2×3 male header. I attached an image that shows the PCB of the RetroPie GPIO Adapter:

[tman140]

Ah, I see. I have the board (haven’t assembled it yet) but didn’t notice the markings that showed which pin is what. Thank you for your help and awesome project!

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