Calibrating the system using a bowl of clean water. There is no single parameter that determines the quality of a water sample, so the pollution monitor has no less than five different sensors.

I was recently provided a copy of Environmental Monitoring with Arduino to review and it doesn’t disappoint in keeping the idea train running. Environmental Monitoring with Arduino: Building ...

He managed to build his own monitor using an Arduino. The trick of this build has to do with how the system works. The panel includes an LED light that blinks 1000 times for each kWh of electricity.