Components Required:
1. Arduino Uno – Buy2. Linux PC/Windows PC (Tested with Windows 10, Ubuntu 14.04 LTS)3. USB cable A to B – Buy4. Breadboard5. 5 mm LED – Buy6. 220 Ohms Resistor (color code – Red, Red, Brown)7. Momentary button or Switch8. 10K Ohms Resistor (color code – Brown, Black, Orange)9. Jumper Wires
Procedure:
1. Connect Arduino Uno to PC via the USB cable.
LEDControl.ino
// the setup function runs once when you press reset or power the board
void setup() {
// initialize digital pin 13 as an output.
pinMode(13, OUTPUT);
}
// the loop function runs over and over again forever
void loop() {
digitalWrite(13, HIGH); // turn the LED on (HIGH is the voltage level)
delay(3000); // wait for a second
digitalWrite(13, LOW); // turn the LED off by making the voltage LOW
delay(2000); // wait for a second
}
ButtonLEDControl.ino
const int buttonPin = 2; // the number of the pushbutton pin
const int ledPin = 13; // the number of the LED pin
// variables will change:
int buttonState = 0; // variable for reading the pushbutton status
void setup() {
// initialize the LED pin as an output:
pinMode(ledPin, OUTPUT);
// initialize the pushbutton pin as an input:
pinMode(buttonPin, INPUT);
}
void loop() {
// read the state of the pushbutton value:
buttonState = digitalRead(buttonPin);
// check if the pushbutton is pressed.
// if it is, the buttonState is HIGH:
if (buttonState == HIGH) {
// turn LED on:
digitalWrite(ledPin, HIGH);
} else {
// turn LED off:
digitalWrite(ledPin, LOW);
}
}
Hardware Connections:
1. LED to Arduino Uno
2. Button to Arduino Uno
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