self-closing doors for chicken coops?

Jeff Hall JRHALL at
Mon Oct 12 10:22:08 EDT 1998

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

Also, I've wondered if any inventor or company has created a wind-up lazy susan that is designed to approximately track the sun?

Lastly, has anyone in a winter climate experimented with creating a mini-ice house, perhaps filled off an out building roof and allowed to freeze?

Thanks for any ideas or feedback-
Jeff Hall, Ames Iowa USA

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