Arduino LED

Flashing a LED by Arduino

Purpose of this tutorial:

The purpose of this tutorial is to flash an LED through the Arduino board: illuminate and switch off the LED alternately at 1 second intervals.

Necessary components:

  • Arduino UNO
  • 1 red LED
  • 1 resistor of 220Ω
  • connecting wires t
  • est plate


As for mounting, it is easy to connect LEDs to Arduino.

  • Connect the digital (digital) terminal number 1 of the Arduino board to the resistor leg Then
  • connect the second resistor leg to the anode (terminal +) of the LED
  • Finally connect the cathode (terminal -) of LEDs to the GND of the Arduino.


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