The Adafruit Circuit Playground Bluefruit is the third board in the Circuit Playground series, taking another step towards a perfect introduction to electronics and programming. The Circuit Playground Bluefruit features an nRF52840 microcontroller which is more powerful and includes Bluetooth Low Energy support for wireless connectivity.

The board has alligator-clip pads around the outside, so you don't have to solder or sew to make it work. Bluefruit can be powered by USB, a AAA battery pack, or with a Lipo battery (for advanced users).

You can use this board with Arduino or CircuitPython - It does not support MakeCode at this time (there is no ETA when it might be added).

Features

• nRF52840 Cortex M4 processor with Bluetooth Low Energy support
• 10 x mini NeoPixels, each one can display any color
• 1 x Motion sensor (LIS3DH triple-axis accelerometer with tap detection, free-fall detection)
• 1 x Temperature sensor (thermistor)
• 1 x Light sensor (phototransistor). Can also act as a colour sensor and pulse sensor.
• 1 x Sound sensor (MEMS microphone)
• 1 x Mini speaker with class D amplifier (7.5mm magnetic speaker/buzzer)
• 2 x Push buttons, labelled A and B
• 1 x Slide switch
• 8 x alligator-clip friendly input/output pins
• Includes I2C, UART, 6 pins that can do analog inputs, multiple PWM outputs
• Green "ON" LED so you know its powered
• Red "#13" LED for basic blinking
• Reset button
• 2 MB of SPI Flash storage, used primarily with CircuitPython to store code and libraries.
• MicroUSB port for programming and debugging
• USB port can act like serial port, keyboard, mouse, joystick or MIDI!