Hello everyone,
I have been trying to make a arduino leonardo wireless gamecontroller with nRF24L01, so I tried to make a simple transmitter that sends hello world! to the serial moniter with 2 arduino unos. So I first tried this code and it worked:
transmitter
/*
* Arduino Wireless Communication Tutorial
* Example 1 - Transmitter Code
*
* by Dejan Nedelkovski, www.HowToMechatronics.com
*
* Library: TMRh20/RF24, https://github.com/tmrh20/RF24/
*/
#include <SPI.h>
#include <nRF24L01.h>
#include <RF24.h>
RF24 radio(7, 8); // CE, CSN
const byte address[6] = "00001";
void setup() {
radio.begin();
radio.openWritingPipe(address);
radio.setPALevel(RF24_PA_MIN);
radio.stopListening();
}
void loop() {
const char text[] = "Hello World";
radio.write(&text, sizeof(text));
delay(1000);
}
reciever:
/*
* Arduino Wireless Communication Tutorial
* Example 1 - Receiver Code
*
* by Dejan Nedelkovski, www.HowToMechatronics.com
*
* Library: TMRh20/RF24, https://github.com/tmrh20/RF24/
*/
#include <SPI.h>
#include <nRF24L01.h>
#include <RF24.h>
RF24 radio(7, 8); // CE, CSN
const byte address[6] = "00001";
void setup() {
Serial.begin(9600);
radio.begin();
radio.openReadingPipe(0, address);
radio.setPALevel(RF24_PA_MIN);
radio.startListening();
}
void loop() {
if (radio.available()) {
char text[32] = "";
radio.read(&text, sizeof(text));
Serial.println(text);
}
}
Then I tried to add a button on the transmitter and when I press it turns on a led on the reciever. I got the code from a youtuber called howtomechatronics but it didn't work. I tried it multiple times but it is still not working. The code for reciever and transmitter is:
transmitter:
/*
* Arduino Wireless Communication Tutorial
* Example 2 - Transmitter Code
*
* by Dejan Nedelkovski, www.HowToMechatronics.com
*
* Library: TMRh20/RF24, https://github.com/tmrh20/RF24/
*/
#include <SPI.h>
#include <nRF24L01.h>
#include <RF24.h>
#define led 12
RF24 radio(7, 8); // CE, CSN
const byte addresses[][6] = {"00001", "00002"};
boolean buttonState = 0;
void setup() {
pinMode(12, OUTPUT);
radio.begin();
radio.openWritingPipe(addresses[1]); // 00002
radio.openReadingPipe(1, addresses[0]); // 00001
radio.setPALevel(RF24_PA_MIN);
}
void loop() {
delay(5);
radio.stopListening();
int potValue = analogRead(A0);
int angleValue = map(potValue, 0, 1023, 0, 180);
radio.write(&angleValue, sizeof(angleValue));
delay(5);
radio.startListening();
while (!radio.available());
radio.read(&buttonState, sizeof(buttonState));
if (buttonState == HIGH) {
digitalWrite(led, HIGH);
}
else {
digitalWrite(led, LOW);
}
}
receiver :
/*
* Arduino Wireless Communication Tutorial
* Example 2 - Receiver Code
*
* by Dejan Nedelkovski, www.HowToMechatronics.com
*
* Library: TMRh20/RF24, https://github.com/tmrh20/RF24/
*/
#include <SPI.h>
#include <nRF24L01.h>
#include <RF24.h>
#include <Servo.h>
#define button 4
RF24 radio(7, 8); // CE, CSN
const byte addresses[][6] = {"00001", "00002"};
Servo myServo;
boolean buttonState = 0;
void setup() {
pinMode(button, INPUT);
myServo.attach(5);
radio.begin();
radio.openWritingPipe(addresses[0]); // 00001
radio.openReadingPipe(1, addresses[1]); // 00002
radio.setPALevel(RF24_PA_MIN);
}
void loop() {
delay(5);
radio.startListening();
if ( radio.available()) {
while (radio.available()) {
int angleV = 0;
radio.read(&angleV, sizeof(angleV));
myServo.write(angleV);
}
delay(5);
radio.stopListening();
buttonState = digitalRead(button);
radio.write(&buttonState, sizeof(buttonState));
}
}
Can anyone tell me why it is not working and also can anyone link me to working tutorials.