Full diagram of my build, looking for advice

[Aoide]

Hi everybody,
I'm waiting on all my bits and pieces to come in the mail, so in the meantime I thought I'd try to make sense of everything and visually piece together what my build will look like and what needs to be attached to what.

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GBZ Schematics-01.png (903.53 KiB) Viewed 5236 times

(In real life I'm a graphic designer/technical artist)

The reason I'm posting this here is I've never done this before and would like some experienced eyes on this, to let me know if you guys think this will work or if there are some serious avoidable mistakes. I'm also posting this in case other people find it useful, but understand I don't know for sure if this diagram will work or if it will blow something up. One of my main concerns is hooking up the cartridge reader correctly to a pi zero w, so if anyone has experience wiring a Kitsch Bent sd cartridge successfully I'd be interested to hear about it.

I'm more or less following Wermy's original build, but with no original gameboy parts, safe shutdown, and usb audio.
If anyone would like the illustrator file to mess with hmu.

Opening the image in a new tab and zooming with the browser is probably the easiest way to see everything.

[Nesto]

Thank you for this! I can get a clearer picture, put intended, of what I'm going to be doing.

[Richb77]

For what it's worth it's the same schematic as I drew out before starting my build. I'm still having issues but cannot see any glaring errors so far.

[Aoide]

Glad it could help Nesto!
After getting some feedback from the Retropie Handhelds facebook page, I think I know some of the tweaks I will need to make. For one, I'm now fairly certain the wires going to the sd cartridge are incorrect (maybe correct wires can be figured out with a multimeter...?)

I also might be changing some of the wire colors and adding labels for the headphone jack, as not all headphone jacks have the same layout for the pinout. While I'm fairly certain the middle pin on mine is ground (adafruit breadboard friendly jack) I'm not sure how to tell the difference between right and left outputs/inputs if it doesn't come clearly labeled (I'm also not sure how much it matters for this project).

Other than that the consensus seems to be that its more or less accurate, but I haven't built or tested yet so beware if you try to use this as a guide.

[shesaysidontlisten]

This is really great. My build is quite similar, including the 8bit board, but I will be going straight audio from the pin and nixing the USB hub and sound card. I'll also be adding in a low pass filter. Thanks so much for this and please update it as you incorporate suggestions!

[Aoide]

Slightly updated version, where I made the changes to the sd cartridge wires and labeling on the headphone jack bits.

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GBZ Schematics 1.1-01.png (1.13 MiB) Viewed 5107 times

I still don't trust that the SD cart stuff is correct so I will likely be testing with a multimeter to try to puzzle it out.

Also, a bunch of my parts came in! Sadly I can't do much at the moment because I'm still waiting on my tools... but getting the case was exciting.

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_MG_1488 small.jpg (3.29 MiB) Viewed 5107 times

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_MG_1492 small.jpg (3.32 MiB) Viewed 5107 times