This is a 0.96 inch blue OLED display module. This sensor has a long life and reliable stability as well. increasing voltage is directly proportional to increasing concentration. The analog output is an concentration, i.e. The TTL output is low signal light which can be accessed through the IO ports on the Microcontroller. It has two outputs: analog output and TTL output. The MQ135 sensor is a signal output indicator instruction. It is with low cost and particularly suitable for Air quality monitoring application. It has the potential to detect different harmful gases. MQ-135 gas sensor can be implemented to detect the smoke, benzene, steam and other harmful gases. In the atmosphere, we can find polluting gases, but the conductivity of the gas sensor increases as the concentration of polluting gas increases. The MQ-3 gas sensor has a lower conductivity to clean the air as a gas sensing material. The MQ-135 gas sensor senses the gases like ammonia nitrogen, oxygen, alcohols, aromatic compounds, sulfide and smoke. For example, an AQI value of 50 represents good air quality with little potential to affect public health, while an AQI value over 300 represents hazardous air quality. The higher the AQI value, the greater the level of air pollution and the greater the health concern. Think of the AQI as a yardstick that runs from 0 to 500. Ground-level ozone and airborne particles are the two pollutants that pose the greatest threat to human health in this country.

For each of these pollutants, EPA has established national air quality standards to protect public health. The AQI focuses on health effects you may experience within a few hours or days after breathing polluted air.Д®PA calculates the AQI for five major air pollutants regulated by the Clean Air Act: ground-level ozone, particle pollution (also known as particulate matter), carbon monoxide, sulfur dioxide, and nitrogen dioxide. It tells you how clean or polluted your air is, and what associated health effects might be a concern for you. The AQI is an index for reporting daily air quality. The components purchased link is given below. All the components can be purchased from Amazon. The detail of this project can found here: IoT Based PM2.5 & PM10 Air Quality Monitoring with ESP8266ДЇollowing are the components required for making this project. To make this project more advanced you can add PM5003 PM2.5 Particulate Matter Sensor to this project. We will use MQ135 Air Quality Sensor that can detect the level of various air pollutant. In this project, we are going to make an IoT Based Air Quality Index Monitoring System in which we will monitor the Air Quality Index over a Thingspeak server using the internet. So, we need to monitor the Air Quality Index. The level of pollution has increased with times by a lot of factors like the increase in population, increased vehicle use, industrialization and urbanization which results in harmful effects on humans by directly affecting the health of the population exposed to it.

The AQI is an index that tells you how clean or polluted your air is, and what associated health effects might be a concern for you. 7 PCB Designing, Gerber File & PCB Ordering.6 Air Quality Index Monitoring with ESP8266 & MQ135.

How to calculate ppm from mq135