Here is a quick parts list of what you'll need. I've linked to a few places where I've bought things from before.
- Arduino - your choice in what one to use, there are many
- 5V power supply (cell phone charger) - probably have one of these laying around
- AC solid state relay - can use other forms of relay, solid state relays just work well/easy with the Arduino and doesn't require the diode in the schematic
- (2) LM35 Temperature sensors
- 10uF capacitor - could probably get away with a smaller capacitor and probably a bit larger one too, easy to salvage out of any old electronics.
- telephone wire - make sure to get enough to put both temperature sensors where you need them
The total for these items comes to ~$40 plus shipping which shouldn't be too bad. It can definitely be done cheaper if you go with a cheaper arduino or find parts to use.
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Last edited by Daox; 04-22-11 at 12:46 PM..
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