[Grove] Seeeduino XIAO SAMD21 Cortex M0+

  1. Pictures, banners and product introduction: https://drive.google.com/drive/folders/1znpKzEuHjj7l8NWkxBng7-_8Nv7WFzrg
  2. Blog: https://www.seeedstudio.com/blog/2020/01/09/which-smallest-arduino-board-is-the-best-comparison-guide/
  3. Product link with description and specifications:
    https://www.seeedstudio.com/Seeeduino-XIAO-Arduino-Microcontroller-SAMD21-Cortex-M0+-p-4426.html