Gorillacell Module 055: MQ4 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 characteristic, they are also known as chemiresistors. By applying 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-4 Gas Sensor module. The MQ-4 sensor is specifically designed to detect Methane (CH₄) gas, making it suitable for natural gas leak detection, environmental monitoring, and safety systems.
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 MQ4 Gas Sensor module.
An Analog to Digital Converter (ADC) peripheral will be used in order to determine the MQ4 Gas Sensor value.
