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Advice on timer

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alchemy

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Hi all, newbie here! Not an electronics expert but I tinker quite a bit.
Does anyone have an idea of something I can use for 12V delay off timer or even of another way I can do it?
Its for an 80.00 dash cam. I want it to keep power to it (stay on) for 10-60 min. (15 -20 min ideal) after I leave the car and then shut off. It would probably need to be rigged for less than 20.00 to be consistent with the dash cam price and I may need to do 3 or 4 of them.
Any thoughts at all would be greatly appreciated.
 
If size is not a factor try a time delay relay. Some have adjustable delay times. Just make sure it is delay off time.
 
a simple 8pin microcontroller (pic12f625, stc15f104) will do that easily with less than 30 lines C program
 
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Thank you,
Those are too advanced for me. My maximum ability stops at replacing things on PC boards and not knowing what they are. I cannot design a PC board.
I need something I can plug in, put wires on, or maybe a board Id have to make a case for. Thats probably the most of my ability.
 
My brother just gave me an idea to just use a temperature switch from the engine. That actually might work very well. A thermostat basically. On at, or above, operating temp, off below, (or lower). I only need any range of 10-60 min delay off after the engine is off.
 
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