Circuit Documentation

Summary

This circuit is designed to control an LED using an Arduino UNO. The LED is connected to a digital pin on the Arduino through a current-limiting resistor. The Arduino is programmed to blink 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 LED with two pins: anode and cathode.
   • Pins: cathode, anode

3. Resistor

   • Description: A resistor with a resistance of 220 Ohms.
   • Pins: pin1, pin2
   • Properties:
     • Resistance: 220 Ohms

4. 9V Battery

   • Description: A 9V battery for powering the circuit.
   • Pins: -, +

Wiring Details

Arduino UNO

• D8 is connected to pin2 of the Resistor.
• GND is connected to cathode of the LED.

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 anode of the LED.
• pin2 is connected to D8 of the Arduino UNO.

9V Battery

• Not connected in this circuit.

Code Documentation

Arduino UNO Code

#define led_pin 8

void setup() {
  // We're going to write to the pin, so we set its mode to OUTPUT 
  pinMode(led_pin, OUTPUT);
}

void loop() {
  digitalWrite(led_pin, HIGH); // Turn the LED on
  delay(1000); // wait a second

  digitalWrite(led_pin, LOW); // Turn the LED off
  delay(1000); // wait a second
}

LED: Two Pin (red) Code

void setup() {
  // put your setup code here, to run once:
}

void loop() {
  // put your main code here, to run repeatedly:
}

This documentation provides a comprehensive overview of the circuit, including a summary, detailed component list, wiring details, and the code used to control the LED.