I have this crazy idea that I can hack old digital instrument clusters and operate them with an Arduino microcontroller, so that I can have a display on my office wall to go with my collection of weird diecast toy cars. It started out … That's when I noticed this odd “Speed Alarm” feature, which used a key switch to lock the speed alarm in and out. … While I was shopping, I also picked up a nice Weber DGV 32/36 carburetor from a car with a strange-yet-familiar engine swap. …

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Don't Try This At Home – The Truth About Cars