Something very #solarpunk 🌻 here! This is a PCB made with wild clay, and hand-painted silver recovered from jewellery, with #atmega328P // They've even made a backpack w all the kit for making it! You can see their video presentation from #38C3 here https://media.ccc.de/v/38c3-clay-pcb and their instruction guide is here https://feministhackerspaces.cargo.site/Clay-PCB-Tutorial #feministhardware