User Tools

Site Tools


This page has deprecated and moved to the new documentation framework of the main Bitcraze website. Please go to and go to the menu 'products'.

Crazyradio PA

The Crazyradio PA is a 2.4 GHz radio USB dongle with a power amplifier.

Currently it's only used to communicate with the Crazyflie Nano Quadcopter but it can be adopted to work with a number of applications that are based on the low-cost 2.4 GHz chips from Nordic Semiconductor.


  • Radio power amplifier giving 20dBm output power
  • > 1km range LOS with Crazyflie 2.0
  • 2×5 2.54mm header for prototyping (not mounted)
  • Hardware support for PPM
  • Same mechanical footprint as the first generation Crazyradio
  • Open source firmware
  • Firmware upgrade via USB
  • Low latency

User guide




  • Based on nRF24LU1+ chip from Nordic Semiconductor
    • 8051 MCU at up to 16MHz with 32Kb flash and 2Kb SRAM
    • 2.4GHz ISM band radio
    • USB device peripheral
    • 125 radio channels
    • 2Mbps, 1Mbps and 250Kps communication data-rate
    • Sends and receives data packets of up to 32 bytes payload
    • Automatically handles addresses and packet ack
    • Hardware SPI and UART
    • Compatible with Enhanced ShockBurst protocol from Nordic Semiconductor
  • Radio specification:
    • 20dBm output power (100mW)
    • Low Noise Amplifier (LNA)
    • RP-SMA connector
  • Can be powered with up to 13V via expansion header
  • 2×5 2.54mm expansion header with following signals (not mounted):
    • Hardware support for PPM input
    • Up to 13V input power
    • GND
    • PPM
    • SPI/UART
  • Standard USB-A connector
  • Mechanical specification:
    • Weight: 6g
    • Size (WxHxD): 58x16x6.5mm (including connectors)
projects/crazyradiopa/index.txt · Last modified: 2021-06-24 16:15 by kimberly