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I'd like to see a dev board (Arduino, RPi, micro:bit) with V+ lines all silkscreened in red, ground in black, and serial in blue & green. It would make teaching much easier.

It wouldn't even be too hard to design, I just never saw it before.

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It's not exactly the same thing, but there's an app that does AR overlays of PCBAs [1] to help with debug. I haven't used it, but it's a pretty neat idea.

[1] https://www.inspectar.com/

Wow! I wonder if I could get that to work with a MacBook BRD and USB microscope. It really is a nice use of AR.

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