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Simple wiring question - MQ3 Alcohol Sensor - SparkFun Electronics
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alcohol detector project using IoT | IoT alcohol detector
Arduino Alcohol Detector | MQ-3 Sensor
MQ-3 Alcohol Sensor Circuit Built with an Arduino
Arduino Interface for Alcohol (MQ-3) Sensor – Mahi's
MQ3 alcohol sensor Arduino code | Step by step instructions - SriTu Hobby