Benzene, Toluene, Acetone, Formaldehyde sensor MQ138 breakout with easyC
SKU: 333128
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10 items available
$39.60
10 in stock
24/7 lifetime customer and technical support
2-year Warranty - no questions asked
Comprehensive Documentation
Open-source everything
Product Description
The MQ138 sensor is specifically designed to detect various gases, with a primary focus on air quality monitoring. While its main target gas is formaldehyde (HCHO), it is also sensitive to a range of other gases, including volatile organic compounds (VOCs) such as toluene, alcohol, acetone, and hydrogen, as well as other harmful gases commonly found in the environment. It requires a short time to heat up in order to work correctly.
The breakout board provides both digital and analog output through the easyC system. Sensor readings are obtained through the easyC.
Product usage tips:
When gas is detected, the LED will start glowing. It will remain off if it doesn’t detect anything. Four mounting holes enable easy mounting to surfaces. The board comes with three male headers.
Product features
Complimentary technical support
In case you ever get stuck with using this product, you can count on us. We provide free, no-strings-attached technical support with this product. Just reach out to us with your questions, and we'll be there to help you.
easyC
easyC is a system for simple connection of microcontroller boards, sensors and actuators that enables fast prototyping without the possibility of error. The connection between the modules takes place with simple cables. easyC is based on I2C communication. Read more here.
Open-source
Open-source culture is rooted deep inside us, and that’s reflected in our products. This product follows the open-source principle. It was made with the community’s suggestions and needs in mind. With a modular design, it can be modified to your needs and incorporated into your projects. We provide all the design documentation needed free of charge on our Github repository.
Made in EU
Soldered products, designed and manufactured in Croatia, are thoroughly tested and meet the highest EU standards of quality and safety.
Key features
- Detects:Â VOC (toulene, acetone, alcohol, hydrogen)
- Voltage: 3V3
- Output: digital
- ATTiny404 microcontroller onboard
- easyC connectors
- Dimensions: 54 x 22 mm / 2.1 x 0.9 inch
Useful links & tutorials
Pinout drawing 
Arduino library 
Open Source Hardware files 
Product datasheet 
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