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.

He decided to build his own, and documented his results in an 8 part tutorial. He’s using the Blue Pill board and the resulting device sends code with paddles, sends canned text, provides an LCD ...

The logo – which retains the company’s traditional blue colour scheme – has been more than 18 months in the making and according to the company it is “unlocking the pill to reveal Pfizer ...