Project 1: Arduino Blinking LED

Main Ideas:

Introduction to the electronic parts (LED & Resistor), introduction to the basic concepts of electrical/electronic i.e. Ohm's law (Voltage/Current/Resistance) and Analog vs Digital.  Introduction Arduino Uno microcontroller board and Arduino IDE (programming application).

Project Description

Turns an LED on for one second, then off for one second, repeatedly.

Circuit:

1.      RED LED
2.      1K Resistor
3.      Arduino UNO

Code

// the setup function runs once when you press reset or power the board

void setup() {

  // initialize digital pin LED_BUILTIN as an output.

  pinMode(LED_BUILTIN, OUTPUT);

}

// the loop function runs over and over again forever

void loop() {

  digitalWrite(LED_BUILTIN, HIGH);   // turn the LED on (HIGH is the voltage level)

  delay(1000);                       // wait for a second

  digitalWrite(LED_BUILTIN, LOW);    // turn the LED off by making the voltage LOW

  delay(1000);                       // wait for a second

}