DFRobot
Gravity: Arduino CO2 Gas Sensor
The Gravity CO2 Gas Sensor uses an MG-811 electrochemical sensing element to detect carbon dioxide concentration in the air. The output voltage decreases as ...
The Gravity CO2 Gas Sensor uses an MG-811 electrochemical sensing element to detect carbon dioxide concentration in the air. The output voltage decreases as CO2 concentration increases, and an onboard potentiometer lets you set a threshold for a digital on/off signal output.
An onboard heating circuit with internal voltage boosting to 6V ensures the sensor operates at its optimal temperature. The Gravity analog interface allows plug-and-play connection to compatible Arduino expansion shields. Note that this is an electrochemical sensor suited to qualitative CO2 analysis — for quantitative measurement, consider an infrared CO2 sensor.
Key Features
- Sensor – MG-811 electrochemical CO2 sensing element
- Operating Voltage – 5V
- Interface – Gravity analog + one digital threshold output
- Sensitivity – Highly sensitive to CO2, low sensitivity to alcohol and CO
- Onboard Heating Circuit – Internal 6V boost for optimal sensor temperature
- Signal Conditioning – Onboard amplification circuit for output signal
- Low Dependency – Minimal humidity and temperature influence
- Immersion Gold PCB – High-quality surface finish
- Dimensions – 32 × 42mm
Ideal For
- Air quality monitoring
- Fermentation process control
- Indoor CO2 concentration detection
Package Contents
- 1× Gravity CO2 gas sensor
Resources
Jargon buster
Plain-language definitions for the technical terms used above.
- Gravity
- Gravity is DFRobot’s plug-in connector system for sensors, motors and modules, using standard cables to reduce loose jumper wiring. It matters because Gravity-compatible parts can connect directly to these ports, while non-Gravity parts may need adapters or manual wiring.
- PCB
- A printed circuit board is a rigid board with copper tracks that connect electronic parts without loose wires. For this kit, the PCBs also form the airplane shape, so they are both the circuit base and part of the finished model.
- potentiometer
- A variable resistor usually turned with a knob or shaft to create an adjustable electrical signal. It is often used for inputs such as volume, brightness or position, so it helps beginners learn how a microcontroller reads changing values.
Find this product in
Brands
Supplier page — dfrobot.com
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Related Tutorials
Free guides on learn.littlebird.com.au
