Story
After the board is populated yopu can grab the bootloader and follow the Feather M0 instructions found here: https://learn.adafruit.com/proper-step-debugging-atsamd21-arduino-zero-m0/restoring-bootloader
More details and code: https://github.com/mike-rankin/SAMD21G18A_Test_Board. This is GitHub account: https://github.com/mike-rankin where you will explore more excellent projects. He is a good DIY maker who designs custom ESP32 IoT projects using Altium Designer, Arduino IDE and Fusion360. Welcome everyone to follow.




