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.

This project from [Bjoern] shows just how small, too, as he squeezes a PET 2001 onto the STM32 Blue Pill. While the PET 2001 was an interesting computer built by Commodore this project wasn’t ...