sudomod

Is it possible to use the USB on the pi zero to power the teensy instead of using a USB Hub? Trying to simplify my build. I won't need any extra USB ports.

For sure you can do that. If you are okay not having an extra usb.

What I have always done though is skip the teensy by wiring the controls from the PCB to the pi's GPIO's directly, and then using the pi's usb to wire an external usb port. It's nice to have the option to connect a keyboard if needed.

I am thinking about the same. My option for external control would be ssh.

You *only* need a USB hub if you're using more than one USB device.

Since you're using a Teensy, that is one USB device. If you use PWM audio off the GPIO pins, then you're fine, and you don't need a hub. If you want to use a USB audio card, then you would need a hub (or splitter).

I tried wiring the board into the GPIO to start but I couldnt get emulation station to find the gamepad. Once I wired to teensy it was fine.

I may try GPIO again since I'm using helders 2.2 now. I was using 8bit oldies from Amazon before.

I'm really close to finishing this build. Just need to get the battery and audio wired up once the buttons are working.