4 layers41.9 × 20.3 mmICE40UP Development BoardSimonBrenninger/ICE40UP-Development-Boarda small, entry-level FPGA Development Board63 partsGPL-3.0
4 layers6.8 × 6.8 mmHvqfn adapterSimonBrenninger/smartWatcha simple, Zephyr-powerd wristwatch2 parts1GPL-3.0