Gorillacell Module 058: MQ7 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 called 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-7 Gas Sensor module. The MQ-7 sensor is specifically designed to detect Carbon Monoxide (CO), making it suitable for indoor air quality monitoring, safety systems, and carbon monoxide leak detection 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 - S for determining the analog value of the MQ7 Gas Sensor module.
An Analog to Digital Converter (ADC) peripheral will be used in order to determine the MQ7 Gas Sensor value.
