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Modifying a 5-switch sound board

Discussion in 'General Electronics Discussion' started by Tickolas, Apr 30, 2013.

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  1. Tickolas

    Tickolas

    2
    0
    Apr 30, 2013
    Hey guys!

    I'm a hobbyist plushie maker and have been using greeting card sound boards to make my creations talk. Now I find that the project I'm starting doesn't have space for the five switches I normally sew into the plushie, so I had a bright (or possibly silly) idea.

    "What if I could use just one switch connected to a compact randomizer or sequencer, which in turn activates one of the five sounds each time I press the switch?"

    So yeah, does anyone have any idea where I could get a device, or schematics for a device, like that? Would have to be pretty small and preferably use a button cell battery. Oh, and assume (correctly) that I'm a complete newbie when it comes to electronics! My experience is limited to soldering longer wires to these sound boards.

    If you need more pictures or a more complete description of the sound chip I'm using, just ask! =)

    Edit: Just to clarify, I'm looking for something that will do one of these two things:

    Case A: Randomizer
    Given Sound board is operational and hooked into randomizer device,
    When the only switch is pressed,
    Then a random sound is played

    Case B: Sequencer

    Normal use:
    Given Sound board is operational and hooked into sequencer device,
    When the only switch is pressed,
    Then the next sound in the sequence is played

    Sequencer reaches end of sequence:
    Given Sound board is operational and hooked into sequencer device,
    And sequencer has previously played sound 5 of 5
    When the only switch is pressed,
    Then the first sound in the sequence is played
     
    Last edited: Apr 30, 2013
  2. GreenGiant

    GreenGiant

    842
    6
    Feb 9, 2012
    sequencer is easy, you can set up some simple counting logic, with a reset after 5 presses probably easiest to do with a shift register. It will step through however many outputs you want, one at a time then go back to the beginning when the limit is reached. Randomized may be a little more difficult, you may need to use a microcontroller.
     
  3. Tickolas

    Tickolas

    2
    0
    Apr 30, 2013
    Thanks! Alright, scratch randomizer for now then. Know of any good tutorials where I can read up on how to use a shift register for this purpose?

    Edit: Derp! This one was at the top of the google search =) !
     
  4. BobK

    BobK

    7,682
    1,688
    Jan 5, 2010
    Actually, a randomizer is no more difficult than a sequencer. You just clock the sequencer clock continuously and when the button is pressed, whichever output is active at that time is selected.

    Edited: You would need a 4017 and a 555 as a clock. The 4017 can cycle through 5 outputs. Pressing the switch would stop the clock and couple the outputs to the 5 buttons. It is a little more complicated than just a sequencer, but probably a more satisfying toy.

    Bob
     
    Last edited: Apr 30, 2013
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