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The FacelessTech blog builds a homebrew Arduboy in a Gameboy SP shell:
I had already dipped my foot in the world of making homebrew Arduboys but I wanted a bigger screen. I had a look to see what was out there. I had seen a few people had used the SSD1309 2.42″ Screen so I ordered one. I thought I would just hook it up the same way as the last screen I used. I was wrong, The screen was split into 2. I looked to see if anyone else was having the same problem I found this forum post the had the same problems as me. I didn’t have the mentioned BC557(B), 2N3906, BC309B and S8850 But I found that a 2N2222 transistor would work.
With the Gameboy color Retropie AIO build I had a complete Gameboy color to measure from including the PCB but with this one I only had my childhood GBA SP and didn’t fancy taking that apart to measure. Instead I just ordered a GBA SP replacement shell and used photos off the internet as reference. I also could print out the PCB as I went to see how it fitted into the shell. All in all I think I did a good job considering. I also had to order a 0.8mm thick board because that’s what in the GBA SP.
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