I used an Arduino Uno and a protoshield instead of a Nano, only because I had a bunch of those on the shelf. Still a WIP and not as glamorous as the original. I've attached an 8-pin header because the original had it, but havent connected it because there's a protoshield on the back. I've done the solder connections to the shield so I can reuse the Uno if I need to. I will be fashioning some sort of a case - probably plexiglass/acrylic front and the same on the back with cutouts for the prototyping areas.
Components
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1601 LCD 16x2 Display
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Arduino Uno or clone
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Protoshield I'm using one from Eeloog
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10K variable resister (for the LCD screen brightness adjustment)
Yes this is what I wanted, but I was too lazy too use a breadboard, so I designed a PCB on my couch and ordered it in China :)