Specifications:

• Voltage regulator input voltage (connected to VCC): 4.8V to 12V
• Voltage regulator input voltage Max: 15V (we recommend to stay below 12V). 
• The modules are compatible with Raspberry Pi
• Dimensions: 26 x 19 x 12 mm 
• Allows easy connection of NRF24L01+ modules
• SMD LED display 
• The NRF24L01 is not breadboard friendly, so the NRF24L01 adapter is used to allow the NRF24L01 to be connected to the breadboard. 

How to interface with Arduino?

To interface the NRF24L01+ PA LNA Wireless Transceiver Module with the Arduino UNO, follow the wiring and setup steps below. This module allows for long-range wireless communication (up to 1000 meters), making it ideal for projects such as remote monitoring, wireless sensors, and remote control systems.

1. Wiring Diagram

Here’s how to connect the NRF24L01+ PA LNA to an Arduino UNO:

Note: Ensure that the VCC is connected to the 3.3V pin on the Arduino, as the NRF24L01+ cannot tolerate 5V. Using 5V may damage the module.

2. Library Installation

To make interfacing easier, we’ll use the RF24 library, which simplifies communication with the NRF24L01+.

• Open the Arduino IDE.
• Go to Sketch > Include Library > Manage Libraries.
• Search for RF24 and install the RF24 by TMRh20 library.

3. Code Example for Transmitter (TX)

Here is an example to send data wirelessly from one Arduino (transmitter):

#include <SPI.h>
#include <nRF24L01.h>
#include <RF24.h>

// Define CE and CSN pins
RF24 radio(9, 10);  // CE, CSN

// Create a pipe address for communication
const byte address[6] = "00001";

void setup() {
  Serial.begin(9600);
  
  // Initialize the NRF24L01+ module
  radio.begin();
  radio.openWritingPipe(address);
  radio.setPALevel(RF24_PA_HIGH);
  radio.stopListening();  // Set to transmitter mode
}

void loop() {
  const char text[] = "Hello, World!";  // Data to send
  radio.write(&text, sizeof(text));  // Send data
  
  Serial.println("Data Sent: Hello, World!");
  delay(1000);  // Send data every 1 second
}

4. Code Example for Receiver (RX)

The following code receives the data sent by the transmitter:

#include <SPI.h>
#include <nRF24L01.h>
#include <RF24.h>

// Define CE and CSN pins
RF24 radio(9, 10);  // CE, CSN

// Create a pipe address for communication
const byte address[6] = "00001";

void setup() {
  Serial.begin(9600);
  
  // Initialize the NRF24L01+ module
  radio.begin();
  radio.openReadingPipe(0, address);
  radio.setPALevel(RF24_PA_HIGH);
  radio.startListening();  // Set to receiver mode
}

void loop() {
  if (radio.available()) {
    char text[32] = "";
    radio.read(&text, sizeof(text));  // Receive data
    
    Serial.println("Data Received: ");
    Serial.println(text);  // Print received data
  }
}

5. Key Points:

• Transmitter: The code for the transmitter sends the message "Hello, World!" every second.
• Receiver: The code for the receiver listens for any incoming data and displays it on the serial monitor.

6. Important Notes:

• Ensure the module is powered via 3.3V as the NRF24L01+ is sensitive to voltage.
• If you face communication issues or range limitations, try adding a 10μF capacitor between the VCC and GND pins of the NRF24L01+ to stabilize the power supply.
• Using a PA LNA version improves signal range, but be sure your setup provides adequate current for it (especially when using power-hungry modules).