2.4GHz NRF24L01 Trådløs Serial Transceiver Module

2.4GHz NRF24L01 Trådløs Serial Transceiver Module, bruges både som transmitter, og receiver. Rækkevide er ca 100 meter. Denne version kan også fås med en antenne.

Tekniske detaljer:

Wireless rate: 1 or 2 MBPS
SPI interface rate: 0 ~ 8MBPS
125 optional channels work
Channel switching time is very short, can be used for frequency hopping
Fully compatible with nRF24XX series
I/O can accept 5v level of input
±60 ppm 16MHz crystal
Low working voltage: 1.9 ~ 3.6 V (Not 5V)
The global open ISM frequency band,  free license to use.
Transmission distance up to 100 meters in outdoor open occasions!

Installere Arduino IDE Software

Før du kan starte din programmering skal Arduino’s IDE software hentes. Dette program bruges til at programmere chippen.
Download fra dette link: Downlaod

Installere RF24-Master Library

• Download library (Download)
• Udpak filer
• Flyt/kopir mappen “RF24-Master” til  “libraries” som findes i “Arduino IDE” mappen (C:\Program Files (x86)\Arduino\libraries)
• Åben Arduino IDE software og klik på “Sketch/Include library”
• Klik nu på “Add Zip. library” og find Zip filen du lige har downloaded.
• Åben “Manage” for at opdatere library.
• Luk, og åben Arduino IDE programmet. (Genstart programmet)
• Nu er RF24-Master Library installeret

Programmering

Inden programmeringen kan udfæres skal den rigtige “COM” port findes. Klik “Værktøj/Port” – og vælg COM port.

Eksempel

Her vises er eksempel på hvordan du kan få LED til at tænde/slukke ved at trykke på en knap et andet sted på et andet board.

Du skal bruge:

• 2x Arduino Uno R3
• LED
• Print Push Button
• 2x 100Ohm Modstand
• Breadboard
• Dupont Breadboard Kabel

For Transmitter

For Receiver

Info: Modulet kan ikke tåle at få “GND” ind på VCC”. Modulet bliver varm og går istykker. “GND” og “VCC” skal passe som vist på tegningen.

Kode: Resiver

#include <SPI.h> 
#include <nRF24L01.h> 
#include <RF24.h> 
 
RF24 radio(7, 8); // CE, CSN 
const byte address[6] = "00001";

boolean button_state = 0; 
int led_pin = 6; 
 
void setup() { 
pinMode(led_pin, OUTPUT); 
Serial.begin(9600); 
radio.begin(); 
radio.openReadingPipe(0, address);   //Setting the address at which we will receive the data 
radio.setPALevel(RF24_PA_MIN);       //You can set this as minimum or maximum depending on the distance between the transmitter and receiver. 
radio.startListening();              //This sets the module as receiver 
} 
 
void loop() 
{ 
if (radio.available())              //Looking for the data. 
{ 
char text[32] = "";                 //Saving the incoming data 
radio.read(&text, sizeof(text));    //Reading the data 
radio.read(&button_state, sizeof(button_state));    //Reading the data 
if(button_state == HIGH) 
{ 
digitalWrite(led_pin, HIGH); 
Serial.println(text); 
} 
else 
{ 
digitalWrite(led_pin, LOW); 
Serial.println(text);} 
} 
delay(5); 
}

Kode: Transmitter

#include <SPI.h> 
#include <nRF24L01.h> 
#include <RF24.h> 
 
RF24 radio(7, 8); // CE, CSN          
const byte address[6] = "00001";     //Byte of array representing the address. This is the address where we will send the data. This should be same on the receiving side. 
 
int button_pin = 2; 
boolean button_state = 0;

void setup() { 
pinMode(button_pin, INPUT); 
radio.begin();                  //Starting the Wireless communication 
radio.openWritingPipe(address); //Setting the address where we will send the data 
radio.setPALevel(RF24_PA_MIN);  //You can set it as minimum or maximum depending on the distance between the transmitter and receiver. 
radio.stopListening();          //This sets the module as transmitter 
} 
 
void loop() 
{ 
button_state = digitalRead(button_pin); 
if(button_state == HIGH) 
{ 
const char text[] = "Your Button State is HIGH"; 
radio.write(&text, sizeof(text));                  //Sending the message to receiver 
} 
else 
{ 
const char text[] = "Your Button State is LOW"; 
radio.write(&text, sizeof(text));                  //Sending the message to receiver  
} 
radio.write(&button_state, sizeof(button_state));  //Sending the message to receiver 

}

Download

• Datasheet

Kontakt os

Du er altid velkommen til at kontakte os på info@ardustore.dk, eller sende os en besked via messenger (Klik her) og vi vil hjælpe dig.