Arduino Projects Ideas - LED Blinking

Components:
Arduino UNO
220Ω resistor
LED
Breadboard & jumper wires

Wiring:
LED anode → Pin 13 via resistor
LED cathode → GND

Code:

void setup() {
  pinMode(13, OUTPUT);
}
void loop() {
  digitalWrite(13, HIGH);
  delay(1000);
  digitalWrite(13, LOW);
  delay(1000);
}