Gorillacell Module 061: MQ135 Gas Sensor
Table of Contents
MQ Gas Sensor provides a series of gas sensors designed to detect different types of gases. These sensors are based on Metal Oxide Semiconductor (MOS) technology, where the sensing material changes its resistance when exposed to specific gases. Because of this property, they are also known as chemiresistors. Using the voltage divider principle, the presence and approximate concentration of a gas can be detected.
The Gorillacell ESP32 Development Kit comes with one (1) MQ-135 Gas Sensor module. The MQ-135 sensor is specifically designed for air quality monitoring, capable of detecting various gases such as ammonia (NH₃), nitrogen oxides (NOx), alcohol, carbon monoxide (CO), and smoke, making it suitable for indoor and outdoor air quality measurement and environmental monitoring applications.
BASIC INFORMATION
| Device | Category | Interface | Chipset | Description |
|---|---|---|---|---|
| Input | Sensor Cell | Analog | - | - |
PINOUT
It has 3 pins which are
- G - for the ground pin,
- V - for the supply voltage, and
- S - for determining the analog value of the MQ135 Gas Sensor module.
An Analog to Digital Converter (ADC) peripheral will be used in order to determine the MQ135 Gas Sensor value.
