old school mechanical sequencer

[clinefx1]

I thought I would share this with you guys.  It's a simple flash sequencer inside a cabinet covered with flashing lights.  The kind of prop you would see in the back on a star trek episode or something.  It is before the days of microchip controlled displays. Basically it is a motor that turns a row of different size cams under a row of switches.  When the high point of the cam rotates around the switch moves up and opens the circuit.  When the cam turns under the contact is closed.   I just thought it was too cool not to put on here.
-Chris



Short YouTube video
http://www.youtube.com/watch?v=R9DnNywWCQ8     

[menehune]

Cool!  It reminds me of the old relay logic controller that one of the 40 year old elevators at work has.  Big cabinet, lots of wires with a rotating cam.  All switches have to be closed for the elevator to work.

"Cheaper" washing machines (non-computerized ones) have a timer switch with cams that turns on and off the cycles at predetermined times as well.

[JonnyMac]

The "sequencer engine" code that I've used here several times is, essentially, the smart version of a can with cams.