Ensuring that your home or office has sufficient air quality is imperative for maintaining good health. Many people would have no idea about the quality of the air in areas they spend large amounts of time, and would be under the impression that building a project to find out would be prohibitively expensive. However, this project from AriV4 demonstrates how you can create an internet connected air monitoring system for well under $50!
With some tinkering this project could open up many potential uses. For example, once poor quality air has been detected you could configure your fan to turn on, or a window to open. Although it sounds simple, it could make a real difference to your health and even potentially save your life in the event of a carbon monoxide build up! To get started with this project check out the following link.