Circuit Documentation

Summary

This circuit involves an Arduino UNO microcontroller interfacing with various sensors and output devices. The components include an MQ-2 gas sensor, a KY-026 flame sensor, a PIR motion sensor, a piezo buzzer, and an LED. The Arduino UNO reads data from the sensors and controls the LED and buzzer based on the sensor inputs.

Component List

MQ-2 Gas Sensor

• Description: A sensor used to detect gas levels in the environment.
• Pins: GND, VCC, ANALOG, Digital

LED: Two Pin (red)

• Description: A red LED used as an indicator.
• Pins: cathode, anode

KY-026 Flame Sensor

• Description: A sensor used to detect flame or fire.
• Pins: A0, GND, VCC, D0

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

PIR/Motion Sensor

• Description: A sensor used to detect motion.
• Pins: GND, OUTPUT, VCC

Piezo Buzzer

• Description: A buzzer used to produce sound.
• Pins: pin 1, pin 2

Wiring Details

MQ-2 Gas Sensor

• ANALOG pin connected to A0 pin of Arduino UNO.

LED: Two Pin (red)

• cathode pin connected to GND pin of Arduino UNO.
• anode pin connected to D13 pin of Arduino UNO.

KY-026 Flame Sensor

• VCC pin connected to 5V pin of Arduino UNO.
• GND pin connected to GND pin of Arduino UNO.
• D0 pin connected to D2 pin of Arduino UNO.

Arduino UNO

• 5V pin connected to VCC pin of PIR/Motion Sensor and VCC pin of KY-026 Flame Sensor.
• GND pin connected to GND pin of Piezo Buzzer, GND pin of PIR/Motion Sensor, GND pin of KY-026 Flame Sensor, and cathode pin of LED.
• A0 pin connected to ANALOG pin of MQ-2 Gas Sensor.
• D13 pin connected to anode pin of LED.
• D2 pin connected to D0 pin of KY-026 Flame Sensor.

PIR/Motion Sensor

• VCC pin connected to 5V pin of Arduino UNO.
• GND pin connected to GND pin of Arduino UNO.

Piezo Buzzer

• pin 1 not connected.
• pin 2 connected to GND pin of 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:

}

Documentation (documentation.txt)

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