Many of the mistakes I made seemed small at the time, but they ruined projects or forced me to start from scratch. These five missteps were the most frustrating because they were avoidable once I knew ...

The original slate RP2040 The idea is simple: get a standard 100 mm x 100 mm (4″ x 4″) slate coaster, throw it in your laser engraver of choice, and zap it with a replica of a chip’s label.