I started with connecting a yellow wire between pin 13 and breadboard. After putting the resistor labeled red, red, brown and gold, I carefully put LEDs with its short leg going to ground. I used parallel connection to put two LEDs and their blinking looked slightly weaker than the case I put only one LED. By connecting a different color wire to ground, I completed the circuit. Then, at Arduino environment, I changed the code controlling speed of blinking LED.
Components:
220 ohm resistor (red red brown gold)
2 LED lights
Bread board
1 Arduino Uno
Connecting wires (yellow and red)
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(3000); // wait for three second
digitalWrite(led, LOW); // turn the LED off by making the voltage LOW
delay(3000); // wait for three second
}
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