How do I put an auto shut off timer in my device?

Thread Starter

JamesBroi

Joined Apr 14, 2015
10
I'm building a device that heats up. I uploaded the specs. I want to attach a button that allows you to choose you device be shut off anywhere from 30min to 2 hours... Also I'd like to attach a usb charger to it so you can charge things via usb when device is on.
Any advice on what this would be called? I don't know what I'm suppose to be looking for, I just know what I want it to do.

Thank you!
 

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#12

Joined Nov 30, 2010
18,076
It's still a timer, but it requires a circuit to be designed if you just want push buttons.
The USB charger needs a circuit designed.
You keep adding features, but each one has to be designed.
 

Thread Starter

JamesBroi

Joined Apr 14, 2015
10
It's still a timer, but it requires a circuit to be designed if you just want push buttons.
The USB charger needs a circuit designed.
You keep adding features, but each one has to be designed.
What do you mean by designed? I assumed it was just a matter including them in the wiring. Could you give me an example?
 

#12

Joined Nov 30, 2010
18,076
LOL!!!
That's not what he meant, but it's still a better solution to the request than a wind-up timer. :D
 

Alec_t

Joined Sep 17, 2013
10,355
anywhere from 30min to 2 hours
That's not the same as your post #3 requirement. So what do you really want?
How do you want to show what time has been set with the button pushing? Or is guessing good enough?
How accurate does the time need to be?
 
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