ESP32 Gas Sensor Project

This project demonstrates how to use an ESP32 microcontroller to interface with a gas sensor for detecting gas concentration levels. Gas sensors are crucial in environments where monitoring gas presence is essential for safety and environmental monitoring.

Components Needed

• ESP32 Microcontroller
• Gas Sensor (Analog output type)
• Jumper Wires
• Breadboard

Circuit Setup

1.Connecting the Gas Sensor to ESP32:

Connect the analog output pin of the gas sensor to analog pin 34 (or any available analog pin) on the ESP32.

Ensure a stable power supply and common ground (GND) connection between the ESP32 and the gas sensor.

Instructions

1.setup

Initialize serial communication at a baud rate of 115200 using Serial.begin().

Configure the gas sensor pin as an input using pinMode().

2.operation:

In the loop() function:

• Read the analog voltage from the gas sensor using analogRead().
• Map the analog value to a gas concentration value using the map() function and a calibration factor.
• Print the calculated gas concentration to the Serial Monitor in parts per million (ppm).
• Check if the gas concentration exceeds a predefined threshold (gasThreshold) to detect gas presence.

3.considerations:

Calibration Factor: Adjust the calibrationFactor based on your specific gas sensor's characteristics and the desired unit of measurement.

Threshold Setting: Define an appropriate gasThreshold value to trigger gas detection alerts.

Sensor Selection: Choose a gas sensor suitable for the type of gas you intend to detect and its concentration range.

Applications

Safety Monitoring: Detect gas leaks or hazardous gas concentrations in industrial and residential environments.

Environmental Monitoring: Measure air quality by monitoring specific gases.

Automated Systems: Integrate with IoT systems for real-time monitoring and alerts.

Notes

Gas Sensor Output: Analog sensors provide a voltage output proportional to the gas concentration.

Threshold Alert: Implement actions based on the detected gas concentration exceeding the threshold.