be aware - the L and R on that board are for the buttons on that pad - they are for a six button layout on the front. if you are actually doing "shoulder" buttons, in the rear, then you would leave those unconnected on that board and wire the buttons (or a board if you get one) in the back directly...

Thanks floppes!

I have my display grounded next to the TV pin (I'm using a composite cable), it would be difficult to connect anything else there, I take it it would be ok to use a different ground pin on the Pi for the other things that need to be grounded?

Wow, thank you Veteran, lifesaver!

Hi all, I'm looking to connect this button PCB: https://ae01.alicdn.com/kf/HTB1SuJoweuSBuNjSsziq6zq8pXag.jpg I have downloaded and installed on my SD card Tinkerboy's modified Retropie image with built in GPIO controller support: https://www.tinkerboy.xyz/retropie-sdcard-image-with-built-in-gpio-con...

Hey all, I have this button PCB: https://ae01.alicdn.com/kf/HTB1SuJoweuSBuNjSsziq6zq8pXag.jpg ...and have a question re connecting shoulder buttons. I know that I need to connect one pin from the left button to "L" on the PCB, and one pin from the right button to "R" on the PCB, and, on each button,...

I've just spent the last 2+ hours trying everything - I replaced the wires and re-attempted every suggestion in this thread. Nothing. No matter what, if the ground from the display controller was connected to the Pi, no matter where, the Pi would not power up. Remove the ground, Pi would power up, ...

I've just spent the last 2+ hours trying everything - I replaced the wires and re-attempted every suggestion in this thread. Nothing. No matter what, if the ground from the display controller was connected to the Pi, no matter where, the Pi would not power up. Remove the ground, Pi would power up, b...

the spot you have the video connected to in the picture is a ground on the pi, so if you have both the video and the ground wires connected from the screen, to grounds at the pi, then that's why the pi is not booting. if you do like rodocop says and move the wire to the spot next to it (which, desp...

the spot you have the video connected to in the picture is a ground on the pi, so if you have both the video and the ground wires connected from the screen, to grounds at the pi, then that's why the pi is not booting. if you do like rodocop says and move the wire to the spot next to it (which, desp...

I think the key takeaway is that it was working. Now it doesn't work, unless I disconnect the black cable from the display controller. This suggests to me that there is a problem with the display controller, but I'm not very experienced with this sort of thing. Guess I'm gonna have to buy another di...