arduino.ino

//https://github.com/nettigo/RadioNRF24

#include <SPI.h>
#include <RadioNRF24.h>

#define BUFF_SIZE 40

struct Payload {
  byte id;
  unsigned long data;
} payload;



#define LED   1


void lightOn(unsigned tme = 1000) {
  digitalWrite(LED, LOW);
  delay(tme);
  digitalWrite(LED, HIGH);
  delay(tme);

}


void setup() {
  Serial.begin(19200);
  payload.id = 66;
  payload.data = 99;
  pinMode(LED, OUTPUT);
  digitalWrite(LED, HIGH);
  Serial.println(F("Before begin"));

  byte address[3] = {0, 0, 1};
  RadioNRF24.begin(address, 100, 8, 7);

  for (byte i = 0; i < 5; i++) {
    lightOn(100);
  }

}
byte pongAddr[3] = {1, 0, 1};
byte received[BUFF_SIZE];
unsigned long last_send = 0;

void loop() {
  // put your main code here, to run repeatedly:
  //if (digitalRead(BUTTON) == LOW) {
  if (millis() - last_send > 2000 + random(1000)) {
    last_send = millis();
    RadioNRF24.write(pongAddr, payload);
    int ret = RadioNRF24.flush();
    Serial.print("Debug: ");
    Serial.println(ret);
    delay(5);
  }
  //  lightOn();
  //}
  int cnt = RadioNRF24.available();
  if (cnt) {
    Serial.print(F("avail: "));
    Serial.println(cnt, DEC);
    RadioNRF24.read(received);
    for (int i = 0; i < cnt; i++) {
      Serial.print(i);
      Serial.print(F(" -> "));
      Serial.print(received[i]);
      Serial.print(F(", "));
    }

    Serial.println();
  }

}

tinyBrd.ino

//Uses Radio libary for tinyBrd in 1.0 version (Radio object not RadioNRF24 yet)

#include <SPI.h>
#include <Radio.h>

#define BUFF_SIZE 40

TinyDebugSerial debug = TinyDebugSerial();

struct Payload {
  byte id;
  byte data;
} payload;



#define LED   1


void lightOn(unsigned tme = 1000) {
  digitalWrite(LED, LOW);
  delay(tme);
  digitalWrite(LED, HIGH);
  delay(tme);

}


void setup() {
  debug.begin(9600);
  payload.id = 66;
  payload.data = 99;
  pinMode(LED, OUTPUT);
  digitalWrite(LED, HIGH);

  byte address[3] = {1, 0, 1};
  Radio.begin(address, 100);

  for (byte i = 0; i < 5; i++) {
    lightOn(100);
  }
  debug.println(F("GO!"));

}
byte pongAddr[3] = {0, 0, 1};
byte received[BUFF_SIZE];

unsigned long last_send = 0;
void loop() {
  // put your main code here, to run repeatedly:
  //if (digitalRead(BUTTON) == LOW) {
  if (millis() - last_send > 2000 + random(1000)) {
    last_send = millis();
    Radio.write(pongAddr, payload);
    int ret = Radio.flush();
    debug.print("Debug: ");
    debug.println(ret);
    delay(5);
  }
  //  lightOn();
  //}
  int cnt = Radio.available();
  if (cnt) {
    debug.print(F("avail: "));
    debug.println(cnt, DEC);
    debug.print(F("Recvd: "));
    Radio.read(received);
    for (int i = 0; i < cnt; i++ ) {
      debug.print(i, DEC);
      debug.print(F("-> "));
      debug.print(received[i], DEC);
      debug.print(F(", "));
    }

    debug.println();

  }

}

Arduino.ino - sends data to tinyBrd and listens for incoming data
tinybrd.ind - sends data to Arduino and listens for incoming data
Received bytes are displayed on Serial. On tinyBrd serial is software only, one direction on D0...
http://starter-kit.nettigo.eu/2015/using-tinybrd-library-on-arduino-to-connect-via-nrf24l01/