I would like to build a LED/Light selector circuit with switch.

Discussion in 'The Projects Forum' started by VequalsItR, Jul 25, 2011.

  1. VequalsItR

    Thread Starter New Member

    Jul 25, 2011
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    Its my first time here!

    I almost have an Associate Degree in electronics ( missing 10 units) as for my background.

    I am giving an speech for school and I have processes that i go through and i want to be able to light LED/Bulbs at the top of each picture as i go though.

    Its going to be sequentially of course , i have some idea of how to do it with a clock ( triggered by a switch ) and multiplexing but i was hoping for something cheaper/ quicker.

    there is about 6 pictures that i want to go though and having 6 switches is a bit of a hassle considering i have time limit i have to meet for my entire speech.


    thanks in advance!
     
  2. KMoffett

    AAC Fanatic!

    Dec 19, 2007
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    De-bounced pushbutton to a CD4017 driving 6 transistors (can be up to 10) to switch on one light at a time.

    Ken
     
  3. KJ6EAD

    Senior Member

    Apr 30, 2011
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  4. CDRIVE

    Senior Member

    Jul 1, 2008
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    You can save real estate by using a Transistor array like a ULN2004. They're Darlington arrays that include integral base resistors. If the higher Vce(Sat) of darlingtons are an issue (don't think so in your case) you can use a none darlington transistor array.
     
  5. PeeSeeBee

    Member

    Jun 17, 2011
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    What's wrong with an old fashioned, 6 way rotary switch?

    ...or have I completely misread the post???
     
  6. KMoffett

    AAC Fanatic!

    Dec 19, 2007
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    That was my first thought, but it seemed so low-tech for someone with "almost ... an Associate Degree in electronics".

    Ken
     
  7. CDRIVE

    Senior Member

    Jul 1, 2008
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    I think the latter.:D
     
  8. iONic

    AAC Fanatic!

    Nov 16, 2007
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    If he has a money restraint the those "old fashioned 6 position rotary switches"
    are not so cheep, at least not the ones I bought a while back.

    ...But non-the-less, it is the quickest way.
     
  9. SgtWookie

    Expert

    Jul 17, 2007
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    Radio Shack stores still stock a 2-pole 6 position rotary switch for about $3
     
  10. KJ6EAD

    Senior Member

    Apr 30, 2011
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  11. PeeSeeBee

    Member

    Jun 17, 2011
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    Last edited: Jul 26, 2011
  12. KMoffett

    AAC Fanatic!

    Dec 19, 2007
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