Circuit Documentation

Summary

This circuit is designed to blink a red LED using an Arduino UNO. The LED is connected to the Arduino through a resistor to limit the current. The Arduino is programmed to turn the LED on and off at one-second intervals.

Component List

1. Arduino UNO

   • Description: A microcontroller board based on the ATmega328P.
   • Pins: UNUSED, IOREF, Reset, 3.3V, 5V, GND, Vin, A0, A1, A2, A3, A4, A5, SCL, SDA, AREF, D13, D12, D11, D10, D9, D8, D7, D6, D5, D4, D3, D2, D1, D0

2. LED: Two Pin (red)

   • Description: A red light-emitting diode.
   • Pins: cathode, anode

3. Resistor

   • Description: A resistor with a resistance of 200 Ohms.
   • Pins: pin1, pin2
   • Properties:
     • Resistance: 200 Ohms

Wiring Details

Arduino UNO

• GND is connected to the cathode of the LED.
• D13 is connected to pin2 of the Resistor.

LED: Two Pin (red)

• cathode is connected to GND of the Arduino UNO.
• anode is connected to pin1 of the Resistor.

Resistor

• pin1 is connected to the anode of the LED.
• pin2 is connected to D13 of the Arduino UNO.

Code Documentation

Arduino UNO Code

void setup() {
  pinMode(13, OUTPUT); // Set digital pin 13 (D13) as an output
}

void loop() {
  digitalWrite(13, HIGH);   // Turn the LED on (High is voltage level)
  delay(1000);              // Wait for a second (1000 milliseconds)
  digitalWrite(13, LOW);    // Turn the LED off by making the voltage low
  delay(1000);              // Wait for a second (1000 milliseconds)
}

This code sets up pin 13 on the Arduino UNO as an output. In the main loop, it turns the LED on and off with a one-second delay between each state change.