Development board using the EFM32HG322F64 microcontroller from Silicon Labs. I mostly made it to become more familiar with the EFM32 series, with the eventual plan to shrink it down into a smaller form factor.

Hand assembled, soldering is a bit sketchy (I have since bought a microscope and it has helped loads)
Programming over my Segger J-Link EDU, but I also managed to get USB Bootloader mode working, so I can flash programs with just a USB cable!
Board was designed in KiCAD, and is available on GitHub