Circuit Documentation

Summary

This document provides a detailed overview of a circuit that includes an Arduino UNO microcontroller, various sensors (MQ-2, Tilt sensor, DHT11 Humidity and Temperature Sensor, Water Level Float Switch Sensor), LEDs, resistors, a buzzer, and a USB male 2-pin connection. The circuit is designed to interface with these components to perform various sensing and output tasks.

Component List

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

MQ-2

• Description: Gas sensor for detecting LPG, i-butane, propane, methane, alcohol, Hydrogen, and smoke.
• Pins: GND, VCC, ANALOG, Digital

Tilt Sensor

• Description: A sensor that detects orientation or tilt.
• Pins: A0, D0, GND, VCC

DHT11 Humidity and Temperature Sensor

• Description: A sensor for measuring temperature and humidity.
• Pins: VDD, DATA, NULL, GND

Resistor

• Description: A passive electrical component that implements electrical resistance.
• Pins: pin1, pin2
• Properties: Resistance: 200 Ohms

LED: Two Pin (red)

• Description: A red light-emitting diode.
• Pins: cathode, anode

LED: Two Pin (blue)

• Description: A blue light-emitting diode.
• Pins: cathode, anode

LED: Two Pin (green)

• Description: A green light-emitting diode.
• Pins: cathode, anode

Water Level Float Switch Sensor

• Description: A sensor that detects the presence of water at a certain level.
• Pins: Wire2, Wire1

Buzzer

• Description: An audio signaling device.
• Pins: PIN, GND

USB Male 2 Pin Connection

• Description: A USB connector for power supply.
• Pins: Negative -, Positive +

Wiring Details

Arduino UNO

• 5V: Connected to VCC of MQ-2, VCC of Tilt sensor, VDD of DHT11 Humidity and Temperature Sensor, and Positive + of USB male 2 pin connection.
• GND: Connected to GND of MQ-2, GND of Tilt sensor, GND of DHT11 Humidity and Temperature Sensor, Negative - of USB male 2 pin connection, cathode of LED (red), cathode of LED (blue), cathode of LED (green), and GND of buzzer.
• A0: Connected to ANALOG of MQ-2.
• A1: Connected to A0 of Tilt sensor.
• D8: Connected to PIN of buzzer.
• D7: Connected to pin2 of Resistor, which is connected to pin1 of Resistor, which is connected to anode of LED (blue).
• D6: Connected to pin2 of Resistor, which is connected to pin1 of Resistor, which is connected to anode of LED (red).
• D5: Connected to pin2 of Resistor, which is connected to pin1 of Resistor, which is connected to anode of LED (green).
• D4: Connected to Wire1 of Water Level Float Switch Sensor.
• D3: Connected to DATA of DHT11 Humidity and Temperature Sensor.
• D2: Connected to D0 of Tilt sensor.

MQ-2

• VCC: Connected to 5V of Arduino UNO.
• GND: Connected to GND of Arduino UNO.
• ANALOG: Connected to A0 of Arduino UNO.

Tilt Sensor

• VCC: Connected to 5V of Arduino UNO.
• GND: Connected to GND of Arduino UNO.
• A0: Connected to A1 of Arduino UNO.
• D0: Connected to D2 of Arduino UNO.

DHT11 Humidity and Temperature Sensor

• VDD: Connected to 5V of Arduino UNO.
• GND: Connected to GND of Arduino UNO.
• DATA: Connected to D3 of Arduino UNO.

Resistor

• pin1: Connected to pin2 of Resistor, which is connected to D7 of Arduino UNO, and anode of LED (blue).
• pin1: Connected to pin2 of Resistor, which is connected to D6 of Arduino UNO, and anode of LED (red).
• pin1: Connected to pin2 of Resistor, which is connected to D5 of Arduino UNO, and anode of LED (green).

LED: Two Pin (red)

• cathode: Connected to GND of Arduino UNO.
• anode: Connected to pin2 of Resistor, which is connected to D6 of Arduino UNO.

LED: Two Pin (blue)

• cathode: Connected to GND of Arduino UNO.
• anode: Connected to pin2 of Resistor, which is connected to D7 of Arduino UNO.

LED: Two Pin (green)

• cathode: Connected to GND of Arduino UNO.
• anode: Connected to pin2 of Resistor, which is connected to D5 of Arduino UNO.

Water Level Float Switch Sensor

• Wire2: Connected to Negative - of USB male 2 pin connection.
• Wire1: Connected to D4 of Arduino UNO.

Buzzer

• PIN: Connected to D8 of Arduino UNO.
• GND: Connected to GND of Arduino UNO.

USB Male 2 Pin Connection

• Positive +: Connected to 5V of Arduino UNO.
• Negative -: Connected to GND of Arduino UNO.

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:

}

documentation.txt

This document provides a comprehensive overview of the circuit, including a summary, component list, wiring details, and code documentation. Each component is described, and its connections are detailed to ensure clarity and ease of understanding.