Vaishali Pathak needed to monitor the air quality inside his house:
Our surroundings are constantly degrading, and there are innumerable disease that can be caused by living in unhealthy, impure and polluted surroundings. I know there are a number of devices in the market that will measure the concentration of harmful pollutants in your house. But, I decided to build one so, I get to choose the functionality I want.
He used anRF52382 board for BLE, a DHT11 for humidity and temperature monitoring and a Raspberry Pi. It sounds like a lot of parts, and it is, but [Vaishali] managed to build this, an enclosure, and used Adafruit IO to monitor it all.
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