self-closing doors for chicken coops?

marc at marc at
Mon Oct 12 20:16:31 EDT 1998

"Does anyone have information on how to open and close a chicken coop
door automatically, using a photo sensor or timer?"

A couple of suggestions:

WW Grainger has a spring loaded electric vent louver opener that could
adapted to a chicken door and there are some photocell switches that
can be found in Mouser, Allied, Newark and DIGI-Key electronic
Many hardware, electrical and general supply houses will have 
various components you could use to control a door such as those
dark activated "turn the light on and keep the thiefs away" devices
that plug into a wall to make believe you are home.

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