[Ignas] wrote in to tell us about [Berryjam’s] AMAZING write-up on creating an Arduino based laser rangefinder. This post is definitely worth reading. Inspired by a Arduino based LIDAR system ...

But what if the Arduino Uno was released in 1980? You’d probably get something like [ElectroBoy]’s 8051-based Arduino Uno. The board itself also has some differences from the original Arduino Uno.