An annotated mRISCV die imageI don’t know about you, but the idea of an Arduino-class microprocessor board which uses completely open silicon is a pretty attractive prospect to us. That’s exactly [onchipUIS]’s stated goal. They’re part of a research group at the Universidad Industrial de Santander and have designed and taped out a Cortex M0…

via A Completely Open Microcontroller — Hackaday

Not only have [onchipUIS] successfully bonded their chip, but they’ve done so using a chip on board process where the die is directly bonded to a PCB. They used OSHPark boards and described the process on Twitter.

@ico_TC Slower gif. Enough to see the bus connection to RAM and a flip-flop. #tech @SSCSociety @ieeecassociety #HappyOctober #MañanaVotoSí pic.twitter.com/9EopcditiQ

— onchip (@onchipUIS) October 1, 2016