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Gravity: Analog Alcohol Sensor (MQ3)

SKU: SEN0128

The Gravity: Analog Alcohol Sensor (MQ3) is a compact and efficient tool for alcohol detection, suitable for various environments and applications including educational, DIY, and professional monitoring. With its reliable detection capabilities, easy pinout guide, and specification chart, users can integrate it into projects with precision and consistency, making it a robust solution for many needs.

Board Overview of Gravity: Analog Alcohol Sensor (MQ3)

Downloadable Resources

  • Docs
  • Tech Specs

    • Specification

    Parameter Value
    Power supply needs 5V
    Interface type Analog
    Size 36.4x26.6mm

    Pinout

    Num Label Description
    1 Output Signal Output
    2 5V Power
    3 GND GND

    Analog Sensor Pin Definition

    FAQ

    • Is it okay to power this using 3.3V?

      RL means current limiting resistor.
      You don't need to care about this if you want to wire this sensor into another microcontroller.
      This is because we have made peripheral circuitry for the MQ3 to turn it into a sensor module instead of a separate MQ3 probe.

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