MQ-131 Ozone Gas Detection Sensor Module

Description

What it is

The MQ-131 sensor is a module specifically designed for ozone detection in the air. This device allows measuring the concentration of ozone, making it useful in various applications that require air quality monitoring.

Features

• Gas Detection: Ozone
• Sensor Type: MQ-131

What it is for

MQ-131 sensor modules are ideal for environmental projects, air quality monitoring, and weather stations that measure ozone. It can be used with Arduino or ESP32 to send measurement data to a mobile or web app.

Tutorial: How to Use MQ-131 Ozone Gas Detection Sensor Module

The MQ-131 sensor is a device that allows measuring the concentration of ozone in the air. Ideal for environmental projects and air quality monitoring.

What you need

• Arduino Uno or compatible
• MQ-131 Ozone Gas Detection Sensor Module
• USB cable
• 5V power supply

Steps

1. Connect the pins of the MQ-131 sensor to the digital pins of the Arduino:
2. VCC to +5V
3. GND to GND
4. AO (analog) to a digital pin for analog input, e.g., A0
5. Upload the following sketch to the Arduino
6. Open the Serial Monitor to view the sensor data

Example code

int sensorPin = A0; // Pin in cui è collegato l'AO del sensore
void setup() {
  Serial.begin(9600);
}
void loop() {
  int sensorValue = analogRead(sensorPin); // Leggi il valore dal sensore
  float voltage = (sensorValue / 1024.0) * 5; // Converti in tensione
  Serial.println(voltage);
  delay(1000); // Attendi un secondo prima di rilevare nuovamente
}

Mini project

Create a weather station that monitors air quality by measuring ozone and sends data to a mobile or web app.

Common mistakes

• Do not verify the correct power supply voltage
• Ignore sensor calibration before use
• Use an unconfigured serial port
• Forget to add pull-up/pull-down resistors if necessary

Recommended accessories

• Arduino Uno R3
• USB A-B cable for Arduino
• 3D Print Case for Arduino and Sensors
• ESP8266 Wi-Fi Module for online data transmission

Frequently asked questions

Does the sensor work in low ozone conditions?
Check the datasheet for the sensor’s operational range.

What is the accuracy of the MQ-131 sensor?
Check the datasheet for the technical specifications of the device.