Circuit Documentation

Summary of the Circuit

This circuit is designed around the Arduino UNO microcontroller board, which serves as the central processing unit. The circuit includes an HC-SR04 Ultrasonic Distance Sensor for measuring distances using ultrasonic waves, a red two-pin LED for visual indication, and a resistor to limit the current through the LED. The Arduino UNO is responsible for controlling the sensor and the LED based on the programmed logic.

Component List

Arduino UNO

• Description: A microcontroller board based on the ATmega328P.
• Pins: UNUSED, IOREF, Reset, 3.3V, 5V, GND, Vin, A0-A5, SCL, SDA, AREF, D0-D13.
• Purpose: Acts as the central processing unit for the circuit, controlling the sensor and LED.

LED: Two Pin (red)

• Description: A basic red LED with two pins: anode and cathode.
• Pins: cathode, anode.
• Purpose: Provides visual indication when powered.

HC-SR04 Ultrasonic Distance Sensor (Wokwi Compatible)

• Description: A sensor that measures distance by emitting ultrasonic waves and measuring the time it takes for the echo to return.
• Pins: VCC, TRIG, ECHO, GND.
• Purpose: Measures distances and provides feedback to the Arduino.

Resistor

• Description: A passive two-terminal electrical component that implements electrical resistance as a circuit element.
• Pins: pin1, pin2.
• Properties: Resistance value of 200 Ohms.
• Purpose: Limits the current flowing through the LED to prevent damage.

Wiring Details

Arduino UNO

• 5V pin connected to the VCC pin of the HC-SR04 Ultrasonic Distance Sensor.
• GND pin connected to:
  • The GND pin of the HC-SR04 Ultrasonic Distance Sensor.
  • The cathode of the LED.
• D13 pin connected to pin2 of the Resistor.
• D11 pin connected to the ECHO pin of the HC-SR04 Ultrasonic Distance Sensor.
• D10 pin connected to the TRIG pin of the HC-SR04 Ultrasonic Distance Sensor.

LED: Two Pin (red)

• Cathode connected to the GND pin of the Arduino UNO.
• Anode connected to pin1 of the Resistor.

HC-SR04 Ultrasonic Distance Sensor (Wokwi Compatible)

• VCC pin connected to the 5V pin of the Arduino UNO.
• GND pin connected to the GND pin of the Arduino UNO.
• ECHO pin connected to the D11 pin of the Arduino UNO.
• TRIG pin connected to the D10 pin of the Arduino UNO.

Resistor

• Pin1 connected to the anode of the LED.
• Pin2 connected to the D13 pin of the Arduino UNO.

Documented Code

Arduino UNO Code (sketch.ino)

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

}

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

}

Additional Notes (documentation.txt)

No additional code documentation was provided.