DFROBOT Bluno Nano - an Arduino Nano with Bluetooth 4.0 DFRobot Bluno series is an Arduino-compatible Bluetooth 4.0(BLE) hardware solution designed by makers,and for makers. All Bluno products are Bluetooth 4.0 ready,and enjoy features such as wireless programming,smart App controlling,long communication range,and plentiful periphery modules. Bluno Nano is perfect for BLE projects with limited space or weight Bluno Nano integrates a TI CC2540 BT 4.0 chip with the Arduino UNO development board It allows wireless programming via BLE, supports Bluetooth HID, supports AT command to config the BLE, and you can upgrade BLE firmware easily Bluno is also compatible with all Arduino Uno pins which means any project made with Uno can directly go wireless