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

Discussion in 'General Electronics Chat' started by JamesBroi, Apr 15, 2015.

  1. JamesBroi

    Thread Starter New Member

    Apr 14, 2015
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    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!
     
  2. #12

    Expert

    Nov 30, 2010
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  3. JamesBroi

    Thread Starter New Member

    Apr 14, 2015
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  4. #12

    Expert

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    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.
     
  5. Alec_t

    AAC Fanatic!

    Sep 17, 2013
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    What are the device supply voltage and current draw?
     
  6. JamesBroi

    Thread Starter New Member

    Apr 14, 2015
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    What do you mean by designed? I assumed it was just a matter including them in the wiring. Could you give me an example?
     
  7. #12

    Expert

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    If it's that easy, Google one and I'll include it.
     
  8. crutschow

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    Mar 14, 2008
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    Here's the best I could find with a short search.
    You might be able to find better with a longer one.
     
  9. #12

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

    AAC Fanatic!

    Sep 17, 2013
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    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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