Objectives: closed loop control temperature with a ±1 Celsius accuracy. should probably hold temps of 21C to 95C consistently. and recirculate the water. hopefully on the cheap.
How: temp control is something that is pretty well documented online. i just have to source the thermistor (cheaper than thermocouple right?) and maybe come up with a nice 7seg/LCD for an interface and on the fly temperature programming. next step is to make sure i have the thing insulated so i'm not pumping in crazy amounts of heat into it. i also have to figure out what kind of thermal mass i want to deal with and the average size of cooked food and whatnot.
Application: i want to be able to prep a whole bunch of vac bags with raw/semiraw foods, freeze em, and throw a pack in 2-3 hours before i need to eat. the niceness of temp control is that i can maintain a specific temp so i never overcook my food.bonus points: if i can only hook this up to an affordable xbee/zigbee/bluetooth module, which i can connect to my computer - then i can start this up (or shut it down) from online or via email.
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