[mattdotc]

That's a pretty decent idea for a project, but I would have instead hooked into the buzzer signal.

The author over-complicated his solution, but that doesn't make it invalid.

[cdcarter]

My landlord wouldn't love me very much if I started taking apart my dryer to hook a mysterious wired object to the buzzer...

[djeikyb]

i thought the same thing until i read the actual instructions:

http://www.instructables.com/id/Washer-Dryer-Laundry-Alarm-u...

it uses an accelerometer to detect the motion of the washer. no need to dissect your large home applicances!