For example, it didn’t seem to have PID control at all ... controls the power for the heater. Now he just needed a PID library — readily available from Arduino.cc of course.

His solution for controlling the thermostat from afar was to take advantage of the GSM network and implement a SMS-based heater controller ... this project with an Arduino GSM shield, or your ...

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