Project: Blink an LED
- Components Needed:
- Arduino board (e.G., Arduino Uno)
- LED
- 220-ohm resistor
- Breadboard and jumper wires (non-obligatory, but beneficial)
Circuit Diagram:
- Connect the high-quality (longer) leg of the LED to a virtual pin on the Arduino (e.G., pin thirteen).
- Connect the negative (shorter) leg of the LED to at least one cease of the 220-ohm resistor.
- Connect the other stop of the resistor to the GND (floor) pin on the Arduino.
Arduino Script:
cpp
// Define the pin range where the LED is hooked up
const int ledPin = 13; // Pin 13 at the Arduino
// The setup feature runs as soon as whilst you press reset or electricity the board
void setup()
// Initialize the virtual pin as an output
pinMode(ledPin, OUTPUT);
// The loop characteristic runs time and again again
void loop()
digitalWrite(ledPin, HIGH); // Turn the LED on (HIGH is the voltage degree)
delay(a thousand); // Wait for a 2nd (a thousand milliseconds)
digitalWrite(ledPin, LOW); // Turn the LED off through making the voltage LOW
put off(one thousand); // Wait for a second
Explanation:
const int ledPin = thirteen;:
This line announces a consistent variable ledPin and assigns it the fee thirteen. This is the pin at the Arduino in which the LED is connected.
Void setup() ... :
The setup characteristic is used to initialize settings. It runs once whilst the Arduino is powered up or reset. Here, it units the ledPin to output mode with pinMode(ledPin, OUTPUT);.
Void loop() ... :
The loop function runs repeatedly in an infinite loop. It controls the LED:
digitalWrite(ledPin, HIGH); turns the LED on.
Put off(1000); pauses the program for 1000 milliseconds (1 second).
DigitalWrite(ledPin, LOW); turns the LED off.
Delay(one thousand); pauses the program for another 1 2nd before repeating the loop.
Uploading the Script:
Open the Arduino IDE.
Copy and paste the above script into a new comic strip.
Connect your Arduino for your laptop through USB.
Select the correct board and port from the Tools menu.
Click the "Upload" button (proper arrow) within the Arduino IDE.
The LED related to pin 13 need to begin blinking on and rancid every second!
This easy venture introduces you to the fundamental concepts of the use of an Arduino: virtual output, delays, and basic syntax. Once you’re cushty with this, you can begin experimenting with different additives and more complicated code!