
BluePillF4
rogerclarkmelbourne/STM32_Pill_Boards
Various STM32 boards in a form factor similar to the Maple Mini or Blue Pill board

Unknown maker
The FC-12M is an uncategorised made by Unknown maker with 2 pins.
PCBKit's library has its KiCad symbol (OPL_Crystal_Oscillator:SMD-CRYSTAL-32.768KHZ-12.5PF-20PPM-90K(2P-L2.0X1.2MM), from Eagle libraries) and its footprint (OPL_Crystal_Oscillator:X2-SMD-L2.0X1.2X0.55MM, from Eagle libraries), ready for a KiCad board. 4 open-source boards in 4 repositories on GitHub use it.
| Pin | Name | Type |
|---|---|---|
| 1 | 1 | Passive |
| 2 | 2 | Passive |

rogerclarkmelbourne/STM32_Pill_Boards
Various STM32 boards in a form factor similar to the Maple Mini or Blue Pill board

andr-line/matrix_slim
This is the successor to my original Matrix keyboard, which was far from perfect. It aims to be as compact as possible while still providing enough keys to not have to re-learn to type.

granitrocky/ardux_mini
First attempts at an all in one ZMK/Bluetooth combo board.

<iframe src="https://pcbkit.io/embed/parts/unknown/FC-12M" title="FC-12M in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe><img src="https://pcbkit.io/embed/parts/unknown/FC-12M.jpg" alt="FC-12M" width="1200" height="900">[](https://pcbkit.io/parts/unknown/FC-12M)Yes. The symbol is OPL_Crystal_Oscillator:SMD-CRYSTAL-32.768KHZ-12.5PF-20PPM-90K(2P-L2.0X1.2MM) and the footprint OPL_Crystal_Oscillator:X2-SMD-L2.0X1.2X0.55MM, both drawn on this page. PCBKit places them on a board for you when you design with it.
4 boards in 4 repositories on GitHub; the most starred are listed on this page, with their KiCad files.