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CMSIS DAP interface for drag-n-drop programming Nordic nRF51822: ARM Cortex-M0 + 2.4GHz radio (BLE or ANT+) Integrated current measurement and motion detection Low power consumption Compact modular design

Seeed Tiny nRF51822 - nRF51822 + 6DOF Mbed Platform is a Bluetooth Low Energy development board designed with low energy consumption and small size in mind. It's integrated with current measurement feature to provide real time energy consumption data, which is essential for developers to optimize software to design long battery life devices. It supports ARM mbed cloud-based IDE with an handy C/C++ SDK and a large number of open source libraries, which makes prototyping and development extremely easy.

With its modular design, we can divide it into two parts - CMSIS DAP interface part and BLE part. The CMSIS DAP interface part is like the Swiss army knife. It provides drag-n-drop programming, CMSIS DAP debug, USB virtual serial port, current measurement and battery charging. The BLE part is built on the Nordic nRF51822 with Bluetooth Low Energy 2.4GHz multiprotocol radio and a 32 bit ARM Cortex-M0 core running 16MHz. MPU6050, a 6 DOF with 3D accelerometer and 3D gyroscope, is integrated to provide motion detect feature.


  • nRF51822: ARM Cortex-M0 + 2.4GHz radio (BLE or ANT+)

  • MPU-6050:3d accelemeter + 3d gyroscope


  • Current measurement

  • CN3065:battery charge port on USB part

  • Power supply:USB/battery(3.5-4.2V)

  • Output voltage:3.3V

  • 4 I/Os, all can be used as analog input, digital input/output, I2C, SPI or UART

  • VCC output control

An Open Software Ecosystem

We recognize that each project has different requirements and goals. As such we have worked to provide as much flexibility to developers as possible. Our quad-core solution allows us to run numerous software solutions. From the selection of algorithms, NLP services, smart assistants, operating systems, and more, we wish to support our users. If you have suggestions on what services you would like to see us officially support let us know on our forums, or if you enjoy the work yourself, submit a merge request to our github.

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