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Calliope Mini - educational set with nRF51822

A set with a development board with the nRF51822 chip, designed for learning programming for pupils and students. It is a more extensive alternative to micro:bit educational modules. DFRrobot DFR0840

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ID: 585166

80,23€ gross (23% VAT)
65,23€ net

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Calliope Mini is a set with an educational module equipped with the Nordic nRF51822 system. This microcontroller with the ARM Cortex-M0 core is equipped with 16 KB of RAM and 256 KB of Flash and communication within the Bluetooth 4.0 LE and 2.4 GHz RF protocol.

The board is a more extensive alternative to the popular micro:bit modules. It uses the same nRF51822 chip, a 5x5 LED matrix, two user buttons and numerous peripheral outputs: PWM, analog inputs, serial interface, I2C, SPI and digital inputs/outputs. In addition, the Calliope Mini board is equipped with a 9-axis IMU sensor with an accelerometer, gyroscope and magnetometer, MEMS microphone, DC motor driver, buzzer and RGB addressable diode. Unlike the micro: bit, the Calliope module does not have an edge connector, and the corresponding pins have been placed on the corners of the board in the form of pads under the alligator clips.

The set is programmed using the same tools as micro: bit - MakeCode graphical interface, as well as Open Roberta Lab, Python or JavaScript. Full documentation along with numerous educational materials is available on the project website.


  • Nordic nRF51822 Bluetooth® 4.0 Low Energy / 2.4 GHz RF SoC chip
  • 32-bit ARM Cortex-M0 microcontroller (16 MHz)
  • 16 kB RAM
  • 256 kB Flash
  • 5x5 LED matrix display
  • USB Micro B connector (programming and power supply)
  • JST battery connector (3.3 V)
  • 2 programmable buttons
  • PWM outputs
  • NXP KL26z (USB UART and programming interface chip)
  • Serial interface (USB + configurable ports)
  • 4 analog inputs
  • 8 to 11 I / Os (depending on software configuration)
  • SPI and I2C interfaces
  • 6 pins for crocodile connectors
  • 9DoF IMU sensor - accelerometer, gyroscope and magnetometer
  • MEMS microphone
  • TI DRV8837 DC motor driver
  • Buzzer
  • RGB LED WS2812B NeoPixel
  • 2 x Grove connector
  • Working voltage: 3.3V

Kit contains

  • Calliope Mini tile
  • USB cable
  • Basket for AAA batteries
  • 2 x AAA battery
  • User manual
  • Elastic
  • Sticker