What is it?

This is bare pcb that you can use as keychain or pendant.

Why did you make it?

This is a big version of my WINXI board, but it is very long. I designed much smaller boards, but I have a full bag so I decided to sell this batch for parts. Boards are usable but they are long and unpractical.

Features (if you assemble)

• I wanted a small board => more fun without shields => integrate some basic components on board
• User button
• User led
• Micro SD Card reader (not supported in arduino IDE) not soldered
• RGB LED
• Nice shape :)
• Atsamd21E18 QFN
• No EDBG chip, programming via native usb only
• 256kb flash
• Micro SD card reader (not tested, not supported in arduino ide)

You receive:

1 x BARE PCB 2mm thick 12x100mm ENIG GOLD FINISH