بورد BlunoSPECIFICATIONOn-board BLE chip: TI CC2540Wireless Programming via BLESupport Bluetooth HIDSupport AT command to config the BLETransparent communication through SerialUpgrade BLE firmware easilyDC Supply: USB Powered or External 7V~12V DCMicrocontroller: Atmega328Bootloader: Arduino Uno ( disconnect any BLE device before uploading a new sketch )Compatible with the Arduino Uno pin