Intelligent IoT Projects in 7 Days

Writing the sketch program

The next step is to develop a program. We'll write a sketch program for Arduino. In this case, we attach our XBee to the Arduino through an XBee shield. This means that the XBee connects to the Arduino via serial pins (digital pin 0 and 1). We'll use the serial object to communicate with the Arduino.

Here is the complete sketch program:

void setup() { 
 
  // start serial 
  Serial.begin(9600);   
  while (!Serial) ; 
 
  // Arduino Leonardo 
  // Serial1.begin(9600); 
  // while (!Serial1) ; 
   
} 
 
void loop() { 
   
  //Serial1.println("hello"); // Leonardo 
  Serial.println("hello"); 
 
  delay(1000); 
} 

Save this program as ArduinoXBee. This program will send the message hello. If you use Arduino Leonardo, uncomment the commented section because Arduino ...