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VOICE BASED. Contribute to Abhishek2268/Measure-Your-Height-by-Ultrasonic-Sensor-using-Arduino-Uno development by creating an account on GitHub.
This project demonstrates how to interface the MQ135 Gas Sensor with Arduino to measure CO2 levels in parts per million (ppm). When the CO2 level exceeds a threshold (650 ppm), the display will flash ...
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