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pigrll 2 gamepad ground connections on PCB
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pigrll 2 gamepad ground connections on PCB

by david_lambright on Sat Jul 18, 2020 1:46 pm

I successfully put together the pigrrl 2 using the excellent directions online. now, I am trying to put another modified version together by wiring the GPIO pins separately by soldering individual wires from the pigrrl gamepad instead of using the 40 pin ribbon cable. I have everything figured out except for the ground connections. I am trying to figure out if I need to solder all eight of the ground pins to a common ground (which would be connected to the pi) or if just some of them are necessary to connect to the pi. I checked the schematic and examined the PCB with a magnifying glass and honestly couldn't figure it out because it looked like the grounds were not connected to anything and all thought they'd all be tied together. Thanks for anyone who can help...this has been a several month project that I have almost finished.

david_lambright
 
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Please be positive and constructive with your questions and comments.