NRF24L01 Wireless 2.4G Control Module

  The NRF24L01 is a single-chip transceiver operating in the 2.4-2.5GHz globally available ISM band. It uses a 4-wire SPI communication port with a communication speed of up to 8Mbps, making it suitable for connection with various MCUs and simple to program. The output power, channel selection, and protocol settings can be configured through the SPI interface, resulting in very low current consumption. When in transmit mode with a transmission power of 6dBm, the current consumption is 9.0mA. In receive mode, the current consumption is 12.3mA, and in power-down and standby modes, the current consumption is even lower.

Module Source

Purchase Link:
https://item.taobao.com/item.htm?spm=a1z09.2.0.0.2f042e8dSu55YD&id=609297351472&_u=j2t4uge5fa1d
Baidu Netdisk Download Link:
https://pan.baidu.com/s/1CUQ3SOdnmD8xSXMdR4YopA
Password: 1234

Specifications

Operating Voltage:1.9~3.6V
Operating Current:900~12.3mA
Maximum data transmission rate: 2000 Kbps
Control Method: SPI
Pin Count: 8 Pin (2.54mm pitch header)

Hardware Connection

nRF24L01       Development board
1 GND          GND
2 VCC          3.3V
3 CE           D9
4 CSN          D10
5 SCK          D13
6 MOSI         D11
7 MISO         D12
8 IRQ          Not connected (can be used for external interrupt)

Usage Method

Install Library

We need to install the RF24 library to easily manage the nRF24L01 module. In the Arduino IDE, you can search for and install the RF24 library by going to Tools -> Manage Libraries....

Enter the code:

/******************************************************************************
  * Test Hardware: LCSC ColorEasyDuino Development Board
  * Version Number: V1.0
  * Modified By: www.lckfb.com
  * Modification Date: April 11, 2024
  * Function Overview:
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#include <SPI.h>
#include <nRF24L01.h>
#include <RF24.h>

RF24 radio(9, 10); // CE, CSN 引脚
const byte address[] = "00001"; // 管道地址

//模式选择
#define MADE 1  //1为发送模式  0为接收模式

void setup() {
  Serial.begin(9600);
  radio.begin(); // 初始化nRF24L01模块

  #if MADE  //如果是发送模式
    radio.openWritingPipe(address); // 打开管道用于发送
    radio.setPALevel(RF24_PA_MIN); // 设置功率级别
    radio.stopListening(); // 设置为发送模式
  #else     //如果是接收模式
    radio.openReadingPipe(1, address); // 打开管道用于接收
    radio.setPALevel(RF24_PA_MIN); // 设置功率级别
    radio.startListening(); // 设置为接收模式
  #endif
}

void loop() {
  #if MADE  //如果是发送模式
    const char text[] = "Hello World";
    radio.write(&text, sizeof(text)); // 发送数据
    Serial.print("发送 :");
    Serial.println(text);
    delay(1000); // 等待时间
  #else     //如果是接收模式
    if (radio.available()) { // 检测是否有数据
      char text[] = "";
      radio.read(&text, sizeof(text)); // 接收数据
      Serial.print("接收 :");
      Serial.println(text); // 通过串口输出接收到的数据
    }
  #endif
}

Usage Testing