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Carbon dioxide detector using Arduino (mini project)

CO2 is one of the greenhouse gas contributing to global warming. In this video, I will be making a CO2 detector using Arduino nano and MQ 135 gas sensor which can measure eCO2 or VOC. Components required: 1. Arduino nano ( any Arduino board ) 2. MQ 135 gas sensor 3. 16x2 LCD display 4. 220-ohm resistor 5. Buzzer ( optional ) In the video, I ...

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