So I finally finished my temp controller (with SD card data logger) for my
fermentation fridge. Tested it out overnight with a half-filled carboy of
warm water. Set the temp to 16 degrees and let it do its thing (graph
attached).

Logged the data every second, which is probably way more than I need (2.5mb
for 12 hours). Even every minute would probably be fine.

I set it to turn on the fridge at set point + 0.5C and turn off at setpoint
-1C. I think I might make it +- 0.5C to make the swings a little less
drastic. I suppose it's a fine line between stability and not cycling the
fridge on and off too often.

Anyone else done something like this? It's  a fridge very much like
this one<http://www.nationalsales.ca/bar-fridges/danby-2-5-cu-ft-bar-fridge-bl...>.
How often is 'too often' in terms of cycling the fridge on and off?

Pretty excited it works so well :)

Stefan

graph.jpg 239K Download

--
VanHackspace (VHS) general list: vhs-gene...@lists.hackspace.ca
http://vancouver.hackspace.ca/wp/mailing-lists/