nRF24L01 2.4 GHz Module Wireless

NRF24L01 Module Wireless 2.4GHz

This product is not recommended for new designs. Nordic recommends its drop-in compatible nRF24L01+ or for a System-on-Chip solution the Nordic nRF24LE1 or nRF24LU1+.

The nRF24L01 is a highly integrated, ultra low power (ULP) 2Mbps RF transceiver IC for the 2.4GHz ISM (Industrial, Scientific and Medical) band. With peak RX/TX currents lower than 14mA, a sub μA power down mode, advanced power management, and a 1.9 to 3.6V supply range, the nRF24L01 provides a true ULP solution enabling months to years of battery lifetime when running on coin cells or AA/AAA batteries. The Enhanced ShockBurst™ hardware protocol accelerator additionally offloads time critical protocol functions from the application microcontroller enabling the implementation of advanced and robust wireless connectivity with low cost 3rd-party microcontrollers.

The nRF24L01 integrates a complete 2.4GHz RF transceiver, RF synthesizer, and baseband logic including the Enhanced ShockBurst™ hardware protocol accelerator supporting a high-speed SPI interface for the application controller. No external loop filter, resonators, or VCO varactor diodes are required, only a low cost ±60ppm crystal, matching circuitry, and antenna.

The Nordic nRF24L01 is available in a compact 20-pin 4 x 4mm QFN package

http://www.nordicsemi.com/eng/Products/2.4GHz-RF/nRF24L01

Connect NRF24L01 to Arduino

• Vcc    to  3.3V 
• Gnd   to  Gnd
• CSN   to 7
• CE     to 8
• MOSI to 11
• SCK   to 13
• MISO to 12

Source Code for TX

#include <SPI.h>

#include <nRF24L01p.h>

nRF24L01p transmitter(7,8);//CSN,CE

void setup(){

  delay(150);

  Serial.begin(115200);

  SPI.begin();

  SPI.setBitOrder(MSBFIRST);

  transmitter.channel(90); // Channel have to the same

  transmitter.TXaddress("AAR"); // Create not over five both RX and TX the same

  transmitter.init();

}

String message;

void loop(){

  transmitter.txPL("How are you");  // Send message

  transmitter.send(FAST); // Send

  delay(1000);

}

Source code for RX

#include<SPI.h>

#include<nRF24L01p.h>

nRF24L01p receiver(7,8);//CSN,CE

void setup(){

  delay(150);

  Serial.begin(115200);

  SPI.begin();

  SPI.setBitOrder(MSBFIRST);

  receiver.channel(90);  // The same both RX and TX

  receiver.RXaddress("AAR");  // The same both RX and TX

  receiver.init();

}

String message;

void loop(){ 

  if(receiver.available()){

    receiver.read(); // Command to read data

    receiver.rxPL(message); // Keep data in "message"

    Serial.println(message); // Print out to serial monitor

    message="";

  }

}