Circuit Documentation

Summary

This circuit involves an Arduino UNO microcontroller interfacing with various LEDs and a KY 038 sound sensor. The LEDs are connected through current-limiting resistors, and the KY 038 sound sensor is connected to the Arduino for power and signal input.

Component List

1. KY 038 Sound Sensor

   • Pins: +, G, A0, D0
   • Description: Sound sensor module used to detect sound levels.
   • Purpose: To detect sound and provide an analog signal to the Arduino.

2. Arduino UNO

   • 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
   • Description: Microcontroller board based on the ATmega328P.
   • Purpose: To control the LEDs and read the sound sensor input.

3. Resistors (220 Ohms)

   • Pins: pin1, pin2
   • Description: Resistors used to limit the current through the LEDs.
   • Purpose: To protect the LEDs from excessive current.

4. LED: Two Pin (red)

   • Pins: cathode, anode
   • Description: Red LED.
   • Purpose: To provide visual indication.

5. LED: Two Pin (green)

   • Pins: cathode, anode
   • Description: Green LED.
   • Purpose: To provide visual indication.

6. LED: Two Pin (yellow)

   • Pins: cathode, anode
   • Description: Yellow LED.
   • Purpose: To provide visual indication.

Wiring Details

KY 038 Sound Sensor

• + connected to 5V on Arduino UNO
• G connected to GND on Arduino UNO
• A0 connected to A1 on Arduino UNO

Arduino UNO

• D9 connected to anode of red LED
• D10 connected to anode of yellow LED
• D11 connected to anode of green LED
• D12 connected to anode of yellow LED
• D13 connected to anode of red LED
• GND connected to pin2 of all resistors

Resistors

• pin1 of resistor 1 connected to cathode of red LED
• pin1 of resistor 2 connected to cathode of yellow LED
• pin1 of resistor 3 connected to cathode of green LED
• pin1 of resistor 4 connected to cathode of yellow LED
• pin1 of resistor 5 connected to cathode of red LED

LEDs

• anode of red LED connected to D9 on Arduino UNO

• cathode of red LED connected to pin1 of resistor 1

• anode of yellow LED connected to D10 on Arduino UNO

• cathode of yellow LED connected to pin1 of resistor 2

• anode of green LED connected to D11 on Arduino UNO

• cathode of green LED connected to pin1 of resistor 3

• anode of yellow LED connected to D12 on Arduino UNO

• cathode of yellow LED connected to pin1 of resistor 4

• anode of red LED connected to D13 on Arduino UNO

• cathode of red LED connected to pin1 of resistor 5

Code Documentation

Arduino UNO Code

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

}

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

}

This code is a basic template for the Arduino UNO. The setup() function is where you initialize your components, and the loop() function is where you place the main logic that runs repeatedly.