I’d also like to use unused GPIO pins on the 2-mic.
According to that “Respeaker 2-Mics Pi Hat” (2017/8/16 8:42) pdf the following are not connected:
GPIO4
GPIO5
GPIO6
GPIO7
GPIO8
GPIO9
GPIO16
GPIO22
GPIO23
GPIO24
GPIO25
GPIO26
GPIO27
GPIO01 is missing from the pdf but this pinout https://pinout.xyz indicates that GPIO1 is “ID_SC” (on pin 28)
I just thought I’d list the apparently unconnected GPIO pins in case anyone else has the same problem.
My question is really though, what’s the intended method to access these unused (if they really are) GPIO pins? Solder a wire to the stub of GPIO pin header that pokes through the top of the Respeaker 2-mic board? Replace the female GPIO pin header on the Respeaker 2-mic with some kind of special GPIO header with female on one side and extra long male on the other to stick out the other side of the board (I have not seen any part like that unfortunately)?
Any advice on how people might connect to these free pins? And, are they actually free to use or are there some subtle/obscure Pi Hat rules that prevent them from being accessed when a Hat is on (like the Respeaker)?
Too bad there’s not just some kind of breakout header/connector on the Respeaker 2-mic to access all the unused GPIO pins.
Respeaker 2-Mics Pi Hat
attachment=0]Screen Shot 2019-04-03 at 23.41.55.png[/attachment]
