We are in time when the electronic technologies are in rise, almost everybody use a smart phone or other electronic device which provide connection on internet. We are more and more aware of global warming and we are trying to assure better quality of life. In this work we made a measurement system for temperature, humidity and content of carbon dioxide in air. All components are connected on Arduino MEGA and inserted into a wooden box. For our application we created a software in Arduino IDE. We are meteorologically evaluated sensor for temperature and humidity. We can monitor all the measurement on the device screen or on mobile application. For monitoring air quality, we will use carbon dioxide sensor, temperature and humidity sensor. Device that we made is not use just for measurement of carbon dioxide in houses, but can be also used in other applications.
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