I’m starting something mildly ambitious for my first real Arduino project. I’ll be making a temperature controller for a chest freezer. The net effect will be to be able to switch the freezer on and off based on a “Set temp.”
The controller will consist of the following:
- A temp probe
- An LCD to show the current and set temperatures
- Up and Down buttons to set the temp
- A massive 5vdc/400ma driven 240V/30A relay
- An Arduino boot-loaded AVR ATMega328
Eventually, I intend to add a lid switch to detect an open lid, an alarm to tell you when the temp is X degrees too high and another temp sensor in the tower to switch on a fan to keep the lines cool when the tower gets too warm.
Pictures and code can be found here:
http://kegeratorcontroller.blogspot.com/
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