MQ-3 Alcohol & Ethanol Gas Sensor Module
Detect the presence of alcohol vapor in the air with the specialized MQ-3 Alcohol Gas Sensor Module. This sensor is highly sensitive to ethanol and is the ideal component for building your own breathalyzer, alcohol level detector, or environmental monitoring project.
The MQ-3 module is designed for ease of use, providing all the necessary electronics on a single breakout board. It offers a dual-output system for maximum flexibility: an **Analog Output (A0)** provides a continuous voltage reading that corresponds to the concentration of alcohol vapor, while a **Digital Output (D0)** goes HIGH when the concentration exceeds a specific threshold.
This threshold can be easily calibrated using the onboard blue potentiometer, allowing you to fine-tune the sensor’s sensitivity for your specific application. Whether for educational projects, safety devices, or fun DIY gadgets, the MQ-3 is the go-to sensor for alcohol detection.
Key Features:
- Sensor Model: MQ-3
- Primary Detection: High sensitivity to Alcohol (Ethanol) vapor
- Dual Output: Provides both Analog (voltage) and Digital (HIGH/LOW) signals
- Adjustable Sensitivity: Onboard potentiometer to set the digital trigger point
- Operating Voltage: 5V DC
- Interface: 4-pin header (VCC, GND, D0, A0) for easy connection
- Fast Response Time: Quickly detects changes in alcohol concentration
Applications:
The MQ-3 is perfectly suited for building a variety of projects, including portable breathalyzers, alcohol level alarms for vehicles or machinery, environmental safety monitors in labs or distilleries, and educational experiments with Arduino and other microcontrollers.
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