Circuit Documentation

Summary

This circuit consists of an MQ-3 alcohol sensor, an Arduino UNO microcontroller, and a red LED. The MQ-3 sensor detects alcohol levels and sends an analog signal to the Arduino UNO. The Arduino processes this signal and can control the LED based on the sensor input.

Component List

MQ-3 Breakout

• Description: Alcohol sensor module
• Pins: VCC, GND, DO, AO

Arduino UNO

• Description: Microcontroller board
• 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

LED: Two Pin (red)

• Description: Red LED
• Pins: cathode, anode

Comment

• Description: Placeholder for comments
• Pins: None

Wiring Details

MQ-3 Breakout

• VCC connected to Arduino UNO 5V
• GND connected to Arduino UNO GND
• AO connected to Arduino UNO A0

Arduino UNO

• 5V connected to MQ-3 Breakout VCC
• GND connected to MQ-3 Breakout GND and LED cathode
• A0 connected to MQ-3 Breakout AO
• D13 connected to LED anode

LED: Two Pin (red)

• cathode connected to Arduino UNO GND
• anode connected to Arduino UNO D13

Code Documentation

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 Documentation (documentation.txt)

This document provides a comprehensive overview of the circuit, including a summary, detailed component list, wiring details, and the code used in the microcontroller.