What happens when an engineer builds a smart garden? This Arduino-powered system automates watering while collecting ...

This isn’t about connecting a temperature sensor in your Arduino. This build is about ... which was done with a homemade ‘calibration box’ in a freezer consisting of two very heavy ceramic ...

A pH meter measures a pH or the acidity/alkalinity of substances. Most pH meters rely on a glass electrode that measures the number of hydrogen ions in the solution. Usually, pH meters need to be ...