I've had tons of fun working on this thing for the last couple months. I appreciate all the help I've received in the form of searching through past posts. Here is my first build. It's pretty bare bones, but I did do something fun with the cartridge. I got a transparent cartridge, and cut holes for the screen control buttons. I also put the powerboost in there so you can see the power, charging, and charged LEDs. The low bat LED is not visible directly.
Simple button PCB and case from Amazon. It also came with a 3d printed screen holder with top screw mounts
Powerboost 1000C (mounted inside clear cartridge with the screen control buttons)
Glitch'd Gaming shoulder button kit
Wermy's button wells
Pi Zero W
BW screen w/Variant 12 board
Color buttons, cartridge, and screen glass from Handheld Legend
PAM8302 Amp with eBay headphone jack
No Teensy (GPIO wired buttons)
No volume wheel
No access to the pi from outside the case, just couldn't quite figure out how to get it in the right place.
BUT - it works!
SpoilerShow
SpoilerShow
SpoilerShow
SpoilerShow
SpoilerShow