I thought some of you might be interested in the kiln controller I
put together based on an Arduino.
Pictures and the code can be seen at:
The total cost is under $100 and lets me program my casting
basically any way I like. The Arduino (a microcontroller or REALLY
wimpy computer) gets the temperature from a thermocouple and turns
the kiln on or off according to the program via a solid state relay.
Most everything is running on 5v, only the hot side of the relay is
at mains current.
Usual disclaimer, if you burn your house down, your neighbours house
or electrocute your cat, don't call me.