Thats what I was thinking, use the pic to open a door in the otherwise foam sealed freezer compartment to regulate the fridge temp. or you could use a bimetal spring to do the same thing....but this IS the piclist ----- Original Message ----- From: "Peter" To: "Microcontroller discussion list - Public." Sent: Monday, February 06, 2006 12:42 PM Subject: Re: [PIC] Survey on PIC usage. > > On Sun, 5 Feb 2006, Peter Todd wrote: > > > On Sun, Feb 05, 2006 at 08:26:36PM +0200, Peter wrote: > >>> My looney scheme was to put a small heater at the very bottom controlled > >>> by a PIC with some temperature sensors. I'd have the heater add heat to > >>> the fridge portion based on the temp sensor reading to keep it above > >>> freezing so that the overall temperature differential would be greater. > >>> Power would be supplied by thin insulated copper strips sneaking past > >>> the door seal. I suspect that the manufacture assumed in the design > >>> that the door would be opened more often than it is, I'm practically > >>> never home. > >> > >> Get hold of some 1/3 inch expanded polystyrene board, cut two > >> rectangular pieces as wide as the fridge, and slip them under the > >> freezer compartment. Set the gap between them (more or less overlap) to > >> regulate the cooling of the lower compartment. > > > > That's an excellent idea, I'll give it a try. The insulation could slide > > in right where the drip tray for the freezer is, just have to remember > > to replace it when defronsting. > > > > Now why didn't I think of that before... Oh, of course, your idea > > doesn't run on electricity... > > You could use static proof foam and stick a couple of pics in it. Come > to think of it, a self adjusting tray overlap using a servo and a > thermistor could be worth investigating ... > > Peter > -- > http://www.piclist.com PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist > -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist