Circuit Documentation

Summary

This circuit consists of an Arduino UNO microcontroller, a pushbutton, a red LED, and three resistors. The Arduino UNO controls the LED and a servo motor based on the state of the pushbutton. When the pushbutton is pressed, the servo motor moves to 90 degrees, and when released, it returns to 0 degrees. The LED is connected to the Arduino and is controlled via a digital pin.

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. Resistor (200 Ohms)

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

3. Resistor (200 Ohms)

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

4. Resistor (200 Ohms)

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

5. LED: Two Pin (red)

   • Description: A red LED with two pins.
   • Pins: cathode, anode

6. Pushbutton

   • Description: A pushbutton with four pins.
   • Pins: Pin 3 (out), Pin 4 (out), Pin 1 (in), Pin 2 (in)

Wiring Details

Arduino UNO

• GND is connected to the cathode of the LED: Two Pin (red).
• D12 is connected to pin1 of a Resistor (200 Ohms).
• D2 is connected to Pin 3 (out) of the Pushbutton.
• D9 is connected to the servo motor (not listed in the parts but mentioned in the code).

Resistor (200 Ohms)

• pin1 is connected to D12 of the Arduino UNO.
• pin2 is connected to the anode of the LED: Two Pin (red).

LED: Two Pin (red)

• cathode is connected to GND of the Arduino UNO.
• anode is connected to pin2 of a Resistor (200 Ohms).

Pushbutton

• Pin 3 (out) is connected to D2 of the Arduino UNO.
• Pin 4 (out), Pin 1 (in), and Pin 2 (in) are not connected in the provided net list.

Code Documentation

Code Summary

The provided code controls a servo motor and reads the state of a pushbutton. When the pushbutton is pressed, the servo motor moves to 90 degrees. When the pushbutton is released, the servo motor returns to 0 degrees.

Code

#include <Servo.h>

Servo myServo;  // Create a servo object
const int buttonPin = 2;  // Push button pin
const int servoPin = 9;   // Servo control pin
int buttonState = 0;      // Variable to store the button state

void setup() {
  pinMode(buttonPin, INPUT);  // Initialize the push button pin as an input
  myServo.attach(servoPin);   // Attach the servo to the control pin
  myServo.write(0);           // Initialize the servo position to 0 degrees
}

void loop() {
  buttonState = digitalRead(buttonPin);  // Read the state of the push button

  if (buttonState == HIGH) {
    myServo.write(90);  // Move the servo to 90 degrees when the button is pressed
  } else {
    myServo.write(0);   // Move the servo back to 0 degrees when the button is released
  }
}

Code File

• File Name: sketch.ino
• File Extension: .ino