Adafruit Bluefruit LE UART Friend - Bluetooth Low Energy Brand_Dagu Simple design -- No half

Simple design -- No half baked features or gimmicks

etc as you would into a normal Pi

If you'd like to back up the RTC for faster fix-recovery

5K for bootloader

Adafruit Bluefruit LE UART Friend - Bluetooth Low Energy Brand_Dagu Simple design -- No halfAdd reliable Bluetooth Low Energy to your project with the Adafruit Bluefruit LE UART Friend. It works with any hardware or software serial port and includes hardware flow control for stable data transfer. Use it as a simple UART data link between your microcontroller and an iOS or Android deviceperfect for wireless control, debugging, or testing via the Bluefruit mobile apps or your own custom BLE setup. Would you like to add powerful and easy to use