Ok all, I'd like to pick your brains for a bit as mine is letting me down at the moment.
I'd like to keep a hot water bottle or steel plate warm, to allow my dog to not freeze his knackers off at night.
I've pondered Peltier devices, nichrome resistance wire and electric blankets.
What would be the best way to keep the bed temperature warm, but not hot? Say around 40 degrees...
Would nichrome wire be suitable to insert into a hot water bottle to keep it warm?
A Peltier device hooked up to a smallish steel plate under the bed, much like a waterbed heater, with a heatsink on the 'cold' side to allow it to draw sufficient heat from the subzero air/ground?
All help appreciated!
--mark