After some searching, I ended up using a microcontroller and a piece of code borrowed from the web that I tweaked and adapted. The microcontroller-based concept was chosen because I wanted to scale ...

Posted in Arduino Hacks Tagged air pollution, air quality, arduino, nova pm sensor, pm10, pm2.5, pollution ← Pi-Based Spectrometer Puts The Complexity In The Software ...

A low-cost (~$100), do-it-yourself (DIY) ultrasonic water level sensor/datalogger has been designed, constructed, and tested for use in education, citizen/community science, and research settings. The ...