I have been trying to make my two Nrf24L01 wireless model work for few days now, to do so I follow the tutorial in the following link.
http://arduino-info.wikispaces.com/Nrf24L01-2.4GHz-HowTo
I followed the link exactly, i changed nothing, expect i didn't add the bypass capacitor , as they said it will improve the performance and reduce heat, however mine is not working at all.
here is a pictures of my hardware setup ,
for the code i didnt change any this from the tutorial but i will past it to make it easy to follow Transmitting code
/* YourDuinoStarter Example: nRF24L01 Transmit Joystick values
- WHAT IT DOES: Reads Analog values on A0, A1 and transmits
them over a nRF24L01 Radio Link to another transceiver.
- SEE the comments after "//" on each line below
- CONNECTIONS: nRF24L01 Modules See:
http://arduino-info.wikispaces.com/Nrf24L01-2.4GHz-HowTo
1 - GND
2 - VCC 3.3V !!! NOT 5V
3 - CE to Arduino pin 9
4 - CSN to Arduino pin 10
5 - SCK to Arduino pin 13
6 - MOSI to Arduino pin 11
7 - MISO to Arduino pin 12
8 - UNUSED
-
Analog Joystick or two 10K potentiometers:
GND to Arduino GND
VCC to Arduino +5V
X Pot to Arduino A0
Y Pot to Arduino A1
- V1.00 11/26/13
Based on examples at http://www.bajdi.com/
Questions: terry@yourduino.com */
/*-----( Import needed libraries )-----*/
#include <SPI.h>
#include <nRF24L01.h>
#include <RF24.h>
/*-----( Declare Constants and Pin Numbers )-----*/
#define CE_PIN 9
#define CSN_PIN 10
#define JOYSTICK_X A0
#define JOYSTICK_Y A1
// NOTE: the "LL" at the end of the constant is "LongLong" type
const uint64_t pipe = 0xE8E8F0F0E1LL; // Define the transmit pipe
/*-----( Declare objects )-----*/
RF24 radio(CE_PIN, CSN_PIN); // Create a Radio
/*-----( Declare Variables )-----*/
int joystick[2]; // 2 element array holding Joystick readings
void setup() /****** SETUP: RUNS ONCE ******/
{
Serial.begin(9600);
radio.begin();
radio.openWritingPipe(pipe);
}//--(end setup )---
void loop() /****** LOOP: RUNS CONSTANTLY ******/
{
joystick[0] = analogRead(JOYSTICK_X);
joystick[1] = analogRead(JOYSTICK_Y);
radio.write( joystick, sizeof(joystick) );
}//--(end main loop )---
/*-----( Declare User-written Functions )-----*/
//NONE
//*********( THE END )***********
Receiving code :
/* YourDuinoStarter Example: nRF24L01 Receive Joystick values
- WHAT IT DOES: Receives data from another transceiver with
2 Analog values from a Joystick or 2 Potentiometers
Displays received values on Serial Monitor
- SEE the comments after "//" on each line below
- CONNECTIONS: nRF24L01 Modules See:
http://arduino-info.wikispaces.com/Nrf24L01-2.4GHz-HowTo
1 - GND
2 - VCC 3.3V !!! NOT 5V
3 - CE to Arduino pin 9
4 - CSN to Arduino pin 10
5 - SCK to Arduino pin 13
6 - MOSI to Arduino pin 11
7 - MISO to Arduino pin 12
8 - UNUSED
- V1.00 11/26/13
Based on examples at http://www.bajdi.com/
Questions: terry@yourduino.com */
/*-----( Import needed libraries )-----*/
#include <SPI.h>
#include <nRF24L01.h>
#include <RF24.h>
/*-----( Declare Constants and Pin Numbers )-----*/
#define CE_PIN 9
#define CSN_PIN 10
// NOTE: the "LL" at the end of the constant is "LongLong" type
const uint64_t pipe = 0xE8E8F0F0E1LL; // Define the transmit pipe
/*-----( Declare objects )-----*/
RF24 radio(CE_PIN, CSN_PIN); // Create a Radio
/*-----( Declare Variables )-----*/
int joystick[2]; // 2 element array holding Joystick readings
void setup() /****** SETUP: RUNS ONCE ******/
{
Serial.begin(9600);
delay(1000);
Serial.println("Nrf24L01 Receiver Starting");
radio.begin();
radio.openReadingPipe(1,pipe);
radio.startListening();;
}//--(end setup )---
void loop() /****** LOOP: RUNS CONSTANTLY ******/
{
if ( radio.available() )
{
// Read the data payload until we've received everything
bool done = false;
while (!done)
{
// Fetch the data payload
done = radio.read( joystick, sizeof(joystick) );
Serial.print("X = ");
Serial.print(joystick[0]);
Serial.print(" Y = ");
Serial.println(joystick[1]);
}
}
else
{
Serial.println("No radio available");
}
}//--(end main loop )---
/*-----( Declare User-written Functions )-----*/
//NONE
//*********( THE END )***********
The output result on the serial is No radio available
dose anyone know where i can go from here ? or how i can debuge such a problem ? i dont even know if the problem is with the sender or receiver or both of them
void setup() /****** SETUP: RUNS ONCE ******/ { Serial.begin(9600); Serial.println("Nrf24L01 Transmiting Starting"); radio.begin(); SPI.setClockDivider(SPI_CLOCK_DIV8) ; radio.openWritingPipe(pipe); }//--(end setup )---however taking out ribbon cable i will need few days to do that as i need need to go and buy some cable :( – Akkilah May 21 '15 at 20:53if( !radio.isPVariant() ) Serial.println("No SPI connection");– Gerben May 22 '15 at 13:16