All of the data and research in one easily accessible place.
By Jack Driscoll-Natale
The system combines a Temperature sensor, pH (Acidity) sensor, and an ORP (Oxygen Reduction Potential) sensor with an Arduino Uno and ESP8266 Wi-Fi chip to relay water quality information every minute to a publicly accessible website for community science and research. The system runs completely isolated with solar power, and costs less than $300, around 1/100th of the price of current industrial standards, even ignoring annual labor and maintenance costs, while measuring water with a 1.08% margin of variation from $2,500 sensors.