XH-M188 Programmable Linear Power Supply

@Elliot Williams recently updated the GPIO alternative functions initialization in the STM8EF GitHub project, and a the library feature with e4thcom support make it much easier to build applications.

There is really no reason not to buy this $4.75 device if you need a programmable power supply with low noise :-)

Edit: there is at least one vendor left (the shipping cost is a bit higher but the price is still reasonable)  and the latest STM8 eForth release can be used.

Almost everybody on HaD (and in the Maker scene) needs power supplies, and Chinese suppliers are happy to supply as many as you like. Programmable power supplies are also available but they come at a much higher price, with very limited programming features, or in the form of "hardware + C-compiler".

This project uses Forth as a programming environment for the power supply. Using Forth as a scripting language is easy, and it leads to surprisingly simple and powerful solutions.

The entry ticket is cheap: the price for the XH-M188 linear power regulator is about $4.75 (including shipping). You'll also need a STM8/STM32 programmer ($2), and "TTL" serial interface ($0.60).

The Low-Cost Programmable Power Supply is a similar project (warning: more soldering required :-) ).

Happy hacking!