Xiao nrf52840 and Android Bluetooth LE(BLE) controlling - Part1

I'm trying to build Radio control car with Xiao nrf52840 controlled by Android smart phone through BLE.
This is Part1 which shows wiring Xiao nrf52840 and Li-battery and also programming of Xiao nrf52840 on Ardiono IDE.
I'll show programming of Android on Part2 movie.
Part3 will be how to program Xiao nrf52840 to control motor and servo motor.

[@user-ed9gh3xj2r]

Part2が楽しみです！

[@CraftSaito]

ありがとうございます。