Logically deter those shifty characters eyeing up your house!

This is a device to switch a mains-powered lamp on and off in a random way, to give a prospective intruder the impression that a house or room is occupied. Other lamps in the same room are switched on permanently, so that the house is never in darkness, but the frequent switching on and off of the controlled lamp will suggest that someone is there.

Constructors please note that part of this project is connected to the domestic MAINS supply and extreme caution must be exercised when building and running this project.