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====== 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 [[projects:crazyflie:index|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 [[http://www.nordicsemi.com|Nordic Semiconductor]].

====== Features ======
  * Radio power amplifier giving 20dBm output power
  * > 1km range LOS with Crazyflie 2.0
  * 2x5 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 ======
  * [[doc:crazyradio:install_windows_zadig|Install Crazyradio driver on Windows XP to 8]] (This is now the recomended procedure)
  * [[projects:crazyradio:programming|Firmware upgrade]]

====== Development ======
  * [[projects:contribution:index | How to contribute to the project]]
  * [[projects:crazyradio:dev_env|Development environment]]
  * [[doc:crazyradio:usb:index|Usb and radio protocol]]
  * [[projects:crazyradio:spi_programming|SPI programming]]

====== Hardware ======
  * [[projects:crazyradiopa:schematics|Schematics]]

====== Specification ======
  * 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
  * 2x5 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)