You can find the kicad files here; https://gitlab.com/robjh/stm8-breakout
This project is a breakout board for the STM8S003K3. It's my first foray into electrical engineering.
If you're an expert looking over my designs, thinking to yourself; "They clearly don't know what they're doing." - You're right.
If you're a beginner, looking for hints that might be helpful for your own projects; Just bare in mind that by virtue of being unaware of the best practices, I've not followed best practices.
The microprocessor was chosen because it was the cheapest I could find. It is part of ST's value line, and it appears to support everything I need. The use cases I have are similar to what you would use an STM8-discovery board for. That means evaluating the chip and just trying things out.
When using the stm8-discovery board, I had it sat next to a breadboard that had the components I was working with. Moving the whole contraption was usually difficult. This thing's form factor is meant to sit inside a breadboard, so I'm hoping my projects using an stm8 might get a bit tidier going forward.
The board features 5V input, either from the USB-micro plug or the programmer header. A voltage regulator to supply 3.3v. An external 16Mhz crystal. And an RGB LED. I've chosen to use resistors and capacitors with a 0402 form factor. These parts are quite small. I asked my colleagues and they said that 0402 is about as small as they'd be able to comfortably hand solder, so I'm going to give it a whack and see how I get on.