| Summary: | Has been created a prototype automatic exhaust fan control based arduino uno. This prototype can be used to help organize the circulation of air in a smoking room / smoking area in an office building or the company that have poor air quality.
This system consist of MQ-135 air quality sensor circuit, fan driver circuit, and LCD display that has been arranged into a shield that can be used on the Arduino UNO microcontroller. This system works when the MQ-135 sensor detecs poor air quality. To be able to processed by microcontroller, the output voltage of the sensor is analog signal and must be converted into digital signal by A0 Pin from micrcontroller Arduino UNO. After the data is in digital then that ADC output will be processed by microcontroller, so that air quality and fan speed can be found.
The system has been successfully realized and can be helps as a regulator of air circulation in the smoking room / smoking area or the company that have poor air quality.
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