Problem with getting nRF24L01 modules to work

hi!
i have trouble getting nrf24l01 modules (version external antenna , pa) work. transmitter hooked arduino nano , receiver connected arduino mega.
code transmitter:

code: [select]

/*
* arduino wireless communication tutorial
*     example 1 - transmitter code
*               
* 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); // cns, ce
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);
}
code receiver:

code: [select]

/*
* arduino wireless communication tutorial
*       example 1 - receiver code
*               
* 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); // cns, ce
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);
  } else {
    serial.println("unavailable.");
  }
}
when try run this, receiver outputs "unavailable". can please tell me can wrong?
there decoupling caps installed on 3v3 lines of arduino, don't think problem.

have @ simple nrf24l01+ tutorial. have kept examples simple possible , work. if have problems easier example familiar with.

the high-power nrf24 needs external 3.3v power supply - arduino 3.3v pin cannot provide enough current.

i believe can have problems high-power versions if tx , rx close each other because signal power high.

...r

Arduino Forum > Using Arduino > Networking, Protocols, and Devices (Moderator: fabioc84) > Problem with getting nRF24L01 modules to work

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