water dish heater

can anyone help me create a automatic cat water dish heater to keep it from freezing in the cold. I have an Arduino UNO, and a kit I got off of amazon. if you can help that would be great, thanks.

You could try one of these bird bath heaters and use your UNO for something else.

Don

This might be an option, if you have some construction skills.

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the heating pad would work great! thanks. I don't know how to code it at all though, does anyone know how to code it so it turns on when a certain temperature is reached?

and do you know of a equivalent heating pad on Amazon? it is much easier for me to get one from their.

hook up the heating pad to a relay that has a 5 V, 600 mA power source in line. You program to open the relay for a period of time then shut off.

arf34:
and do you know of a equivalent heating pad on Amazon? it is much easier for me to get one from their.

Google is your friend: heating pad 5v

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Try an egg cooker as bowl, and run the heating element on a 5volt phone charger.
Leo..