1.7 FIRST Arduino Project - Hello World

As any other programming languages, our first Arduino Project is also "Hello World", without hardware wiring. The code follows standard Arduino coding convention, namely, composed of a setup() function and a loop() function.

Sketch

The code can be found at Examples_Arduino - geek-workshop - studynotes - _001_HelloWorld - _001_HelloWorld.ino.

void setup() {
  Serial.begin(9600); // Open serial port, and set bit rate to 9600.  
}

void loop() {
  Serial.println("Hello World"); // output "Hello World" to serial port.
  delay(1000); // wait for a second
}

Verify & Compile

In Arduino IDe, to compile the above codes, click Sketch->Verify/Compile; to upload the code onto Arduino board afterwards, click Sketch->Upload.