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DFRobot Beetle Microcontroller, BLE and Beetle - DFRobot DFR0339, The Beetle BLE (Formerly known as the Bluno Beetle) is an Arduino Uno-based board with Bluetooth 4.0 (BLE). It is probably the smallest Arduino BLE board in the market. It uses standard Arduino IDE to upload codes without any extra library and drivers. The Beetle BLE is another milestone in the Beetle line, which gives DIY users more options in their project designs. It is fully compatible with Bluno in instructions and procedures, and supports Bluetooth HID and ibeacon modes.The Beetle BLE offers a super-tiny and low-cost Arduino with Bluetooth 4.0. The Beetle BLE can be used for disposable projects, such as DIY projects, workshops, gift projects, E-Textiles wearable and educational applications. For students and makers who can not afford too much on hardware purchasing, Beetle can be a great solution.Just like a native Arduino board, but with Bluetooth 4.0. An APP called Play Bluno is available on IOS and Android which gives quick access to this little tiny board. It not only supports USB programming, but also wireless uploading. With the V-shaped gilded I/O interface, it is convenient to simply twist conductor wires on to it, which could a good choice in the wearable market. DFRobot DFR0339 Beetle BLE - The smallest Arduino bluetooth 4.0 (BLE)