Expanding GPIO pins

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This topic contains 2 replies, has 2 voices, and was last updated by Profile photo of mexeroser mexeroser 1 year, 9 months ago.

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  • #100897
    Profile photo of mexeroser

    Hey guys!
    Im trying to build a Rpi arcade at the moment. So far so good, i got one joystick and some buttons working.
    The problem i got is: I would really like to build it for 2 players, but I would not have enough GPIO pins.
    I bought this https://www.adafruit.com/products/1171 at first, but actually that cannot work because it literally doubles the gpio pins, so that if i trigger one button for example, it would trigger the one connected to the pin right next to it as well. (correct me if im wrong, im a total noob in this regard)

    My question is: If my assumption is right, and the perma proto board that i bought does not work, what would help/ might this be something worth buying:

    Thank you in advance, i really appreciate help from anybody!

    Profile photo of midimax

    ControlBlock ? (with some additional features)

    Or if you want to build it completely yourself using MCP23017 like ControlBlock or the “IO Pi” from your second link does is the correct way.

    • This reply was modified 1 year, 9 months ago by Profile photo of midimax midimax.
    Profile photo of mexeroser

    Thank you very much!

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