Microduino-Module nRF

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Microduino-nRF24 is a high-speed embedded wireless data transmission module.


  • Fully integrated link layer on the module makes it easy to develop.
  • With automatic retransmission function, it can automatically detect and resend lost packets and the retransmission time and frequency can be controlled by software.
  • With packets that can automatically save un-received response signals.
  • With automatic reply function, the module can send response signal automatically after receiving valid data and need no reprogramming.
  • Capable of setting six receiving channels' address synchronously and opening the receiving channels selectively.
  • Standard pin 2.54mm spacing interface, making it convenient for embedded application.
  • Small, stackable and economic.
  • Open source hardware circuit design and Arduino compatible programming development environment.
  • With a uniform Microduino interface standard and rich peripheral modules, it can easily connect with other Microduino modules and sensors.
  • 2.54mm(0.1 inch) pin pitch, compatible with bread boards and pegboards.


  • Global open 2.4GHz ISM band with the maximum transmission power of 0DBM and free license to use.
  • Low operation voltage: 1.9-3.6 V.
  • SMA antenna, easy to change.
  • Support six channels' data transmission.
  • High rate: 2MBPS. Due to short transmission rate in the air, it largely reduces collision in wireless transmission. (Set 2MBPS or 256 KBPS, 1 MBPS air transmission rate with software)
  • Multi-point frequency: With 125 frequency points, it meets the requirement of multi-point communication and frequency hopping communication.
  • Low consumption: With fast air transmission and startup, it greatly reduces the current consumption when communicating in the response mode.

Pin Description

Microduino-nRF24 Spec

NRF24L01 Pin Microduino Pin Function
SCK D13 SPI bus clock
SI D12 Data input pin
SO D11 Data output pin
CSN D10 SPI Chip-select signal (Defined in program)
CE D9 RX or TX Mode selection (Defined in program)


Eagle PCB File:Microduino-nRF24.zip

Main Components


Arduino library and support package


Download Program

Test Program:File:Program Test NRF.zip

Two Microduino core communicate via Nrf24

  • Prepared hardware:Microduino FT232R, Microduino Core*2, Microduino Nrf24*2;
  • Prepared software:Microduino example program (Arduino part), Arduino IDE(1.0 release and upper), RF24 library, RF24Network library;
  • Copy the downloaded library to libraries folod of Arduino IDE;
  • Start Arduino IED, open Microduino example program, select board "Microduino Core (Atmega328P@16M,5V)", download directly;
  • The sending and receiving wiring picture:
Sending wiring picture
Receiving wiring picture

  • Observation
    • Sending end can control receiving end's LED by button.
    • Sending end potentiometer can control the lightness of LED for receiving end.


  • Does this module have the antenna?
    • Yes.
  • Does this module support the voltage conversion from 5V to 3.3V?
    • Core and Core+ module doesn’t support this voltage conversion.
  • How to control this module running in low power consumption mode or close it directly?
    • You use the function pwerDwon() offered by Arduino library.
  • What's the work range of this module?
    • 100 meters in the open area.




Microduino nRF24 Front
Microduino nRF24 Back