Description:
Created a simple circuit that would turn on/off an LED in time intervals specified by Arduino code. Eventually added a second LED to make the red/blue lights light up at the same time like a police car. :)
Items used:
- (1) Breadboard
- (1) 220 resistor
- (3) connector wires
- (1) Arduino uno board
- (1) Red LED
- (1) Blue LED
Code:
/*
Blink
Turns on an LED on for one second, then off for one second, repeatedly.
This example code is in the public domain.
*/
// Pin 13 has an LED connected on most Arduino boards.
// give it a name:
int led = 13;
// the setup routine runs once when you press reset:
void setup() {
// initialize the digital pin as an output.
pinMode(led, OUTPUT);
}
// the loop routine runs over and over again forever:
void loop() {
digitalWrite(led, HIGH); // turn the LED on (HIGH is the voltage level)
delay(200); // wait for a 200 milliseconds
digitalWrite(led, LOW); // turn the LED off by making the voltage LOW
delay(200); // wait for 200 milliseconds
}
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