MQ2 Sensor, Keypad and Buzzer-Based Gas Security System using Arduino_Raghav_upadhyay circuit diagram

MQ2 Sensor, Keypad and Buzzer-Based Gas Security System using Arduino_Raghav_upadhyay

By raghav upadhyay

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Components used: arduino, arduinouno, mq-2, keypad, buzzer

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