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 opened 2.4 GHz ISM band, the maximum 0 DBM transmission power, free license to use;
  • Low working voltage: 1.9 ~ 3.6V low voltage;
  • SMA antenna, easy to replace;
  • Support six channels data reception;
  • High rate: 2 MBPS, due to the air transport time is very short, greatly reduce the collision phenomenon in the wireless transmission (software set 2 MBPS or 256 KBPS, 1 MBPS air transmission rate);
  • Multi-frequency points: 125 frequency points, support the requirements of multipoint communication and frequency hopping communication;
  • Low power consumption: when work in answer mode communication, fast air transport and the startup time, greatly reduce the current consumption.

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 downlaoded 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.
  • How does the Auto Acknowledge & Auto Re-Transmit work? Finished by software or hardware?
    • Automatic retransmission function, automatic detection and resend the lost packets. Retransmission time and retransmission times can be controlled by software;
    • Automatic store the packets that didn't received response signal;
    • Automatic reply function, after receipt of a valid data, module will send response signal automatically, no need programming again;
  • Does this module support the voltage convert from 5V to 3.3V?
    • Core and Core+ module doesn’t support this voltage conversion and it can be finished by stacking BM, FT232, DUO and UNO module.
  • How to control this module running in low power consumption mode or close it directly?
    • You use the function pwerDwon() that Arduino library provided.
  • What's the work range of this module?
    • 100 meters in open area.




Microduino nRF24 Front
Microduino nRF24 Back