@wransohoff
4 boards publicly available on BoardRepo.
Public boards
stm32wb55cx_minimal
(Currently untested) minimal STM32WB board. These look cool because they have a bluetooth / 802.15.4 radio and an internal switching power supply. Fun!
pcbbom
oled_test_boards
Repository with KiCAD projects for two boards which provide SPI communication to a 30-pin 128x64 monochrome SSD1306 display panel, and a 23-pin 96x64 multicolor SSD1331 one.
pcbbom
steamgal_tetris
Try writing some 'tetris' firmware for a development board with a very small display, a buzzer, and a few buttons. That should introduce a few core peripherals.
pcbbom
motomate
An STM32-based GPS receiver handheld board with a small display and microSD card slot: eventually, I'd like to make some simple mapping / logging firmware and a case for mounting it to motorcycle handlebars.
pcbbom