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 ...

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.

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