nRF52840 tag

What's this?

This is a development board works with coin batteries based on Adafruit Feather nRF52840 Express. This board works on all bootloaders of Adafruit Feather nRF52840 Express.

Features

• Works with coin battery(CR2032)
• Extra battery(PH connector) support(Not suport charging)
• USB Type-C(USB 2.0)
• Warking same as Adafruit Feather nRF52840 Express(CircuitPython etc)
  • Programmable Full color LED(NeoPIXEL)
  • 1 usable push switch in program
  • 16MBit Flash memory

How to use

1. Connect j-link and this board via SWD vias back side of this board.
2. Burn a bootloader you want to use with nrfjprog command. (For more detail, read "Burninng new Bootloader" on adafruit's github