No personal experience, but a review at https://hackaday.com/2017/01/05/hands-on-with-the-first-open-source-microcontroller/ https://hackaday.com/2017/01/05/han

No personal experience, but a review at https://hackaday.com/2017/01/05/hands-on-with-the-first-open-source-microcontroller/ https://hackaday.com/2017/01/05/hands-on-with-the-first-open...