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Fantastic project and that colour silk-screen seems to work perfectly for this.

It's not clear what size screen would be ideal though, as a 3-4" one will seema bit 'stuck on'. Maybe an option for a larger screen to make a 'spectrum clamshell laptop', and/or a video out to have no screen at all.

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In the next version, the screen will feel a lot more integrated. There is a bit of a challenge with larger screens as they tend to have more pixels and the MCU is pretty limited in how much it can push out at a good frame rate.

Use a RP2040 or similar to handle the conversion from the Spectrum pixel output to what the display needs?

And perhaps a small adapter board for the display FPC connector?

Been thinking exactly along those lines! But need to get this version actually done… so many rabbit holes :)

I know, just spitballing :)

Maybe mount the display on a small adapter PCB that has a CPU for pixel conversion, and a standard flat cable down to the main board?

Then the main board can stay the same even as the displays are swapped out together with new adapter PCBs?

That size is about where the range for software hacker friendly products end. Minimum cost and complexity needed for a 4.8" and 6" LCD are substantially different.

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