Been trying to wrap this one up for weeks. Hardware seems to be good now that I have the assist board in there, but I'm still working out some kinks in the software. Camble's safe shutdown script and retrogame do not want to play well together at all, and there's no obvious reason. It's basically working, but the battery monitoring needs adjustments - the minty script shows the icon, but doesn't seem to register the correct level, and I'm skeptical the low-battery trigger is working on the safe shutdown currently... but I'm pretty sure I can work it through it's kinks eventually. I'm also trying to get this all running (efficiently) in retropie 4.4 which is its own batch of headaches.
The GPIO Assist from Pocketadventures.com is the biggest draw here - the rest is pretty standard gbz stuff, i think. The assist board is really great at keeping things organized and brings the chance of screwing up connection spots down a lot (assuming you don't mess up soldering it to the pi itself). Also - these buttons are my absolute favorite for playing games, so far.
Parts ListShow
Pi Zero W
GPIO Assist
Retromodding NES buttons
handheld legend case
.5mm border glass screen protector (from hh legend maybe?
GearBest composite screen
Camble's Safe Shutdown
AdaFruit Powerboost 1000c
USB audio dongle
Tinkerboy USB Hub
5000mah battery (which, i'm skeptical about)
4ohm 3w speaker
pam8403 amp
3d printed parts
odds and ends
GPIO Assist
Retromodding NES buttons
handheld legend case
.5mm border glass screen protector (from hh legend maybe?
GearBest composite screen
Camble's Safe Shutdown
AdaFruit Powerboost 1000c
USB audio dongle
Tinkerboy USB Hub
5000mah battery (which, i'm skeptical about)
4ohm 3w speaker
pam8403 amp
3d printed parts
odds and ends
inside shot - with gpioassistShow
inside shot - with screen board, covered in tapeShow
side - vol wheel and usbShow
side - barrel jack and sd cardShow
bottom - audio jackShow
rear - power onShow
rear - power on - chargingShow