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Put That Light Out
Put That Light Out
October 2, 2010

If you forget to switch off the light after leaving a seldom used room (such as the loft), there’s a strong likelihood that it could remain lit for months, running up an expensive power bill... [more]


circuit from:http://www.extremecircuits.net/2010/05/put-that-light-out.html

Melody Door Ringer
Melody Door Ringer
August 8, 2010

In all the houses exist the bells in the door. All want, they have the possibility of being possible to change the intensity, the tone of sound. With this circuit we have this possibility. With... [more]

Doorbell Memory Circuit Diagram
Doorbell Memory Circuit Diagram
August 8, 2010

If you’re expecting an important visitor but you just have to step out for a moment, an electronic doorbell memory can come in handy so you can see whether someone rang while you were out.... [more]


circuit from:http://www.extremecircuits.net/2010/04/doorbell-memory-circuit-diagram.html