“DIY Arduino Air Quality monitor which can measure surrounding Air Quality also shows temperature and humidity in your room.
Many times we feel very weak while waking up from the bed even after getting a good sleep at night. This sometimes happens because of the poor air quality in the closed room at night.
This is a low cost Air Quality Monitor which can monitor the air quality of a room using MQ135 air quality sensor. It also measure the room temperature and humidity using DHT11 and shows the data on a OLED display. It is a fun little project and very helpful too.”