It can be a very powerful system. [jephthal] took the excellent Mecrisp Forth and put it on the very inexpensive STM32 “blue pill” board to create a development system that cost about $2.

Found a stray pill in your medicine cabinet? Have a loved one who mixed up a couple of their meds by mistake? There are plenty of reasons you might wonder, “What pill is this?” WebMD’s Pill ...

The brains of the operation is an STM8S103F module, aka the Blue Pill, which is paired with a DS18B20 temperature sensor. [Tim]’s original coaster has one in a TO-92 package embedded in the top ...