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Arduino Forum Digital volume control
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Forum Thread Details
  • Replies 16 replies
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  • audio
  • app
  • arduino
  • Speakers
Related

Digital volume control

ctucht16
ctucht16 over 6 years ago

Hello every one I have a project I would like to try at work. We have an old radio at one bench and speakers running to every other bench. The volume is a pain to change. I thought what if I built an app that every one can change the volume individualy on our own workstations. I tried doing some reading on digital pots but I'm still lost in the sauce and am in serrious need of help.

 

So I need something to controll the speakers and design the app to controll the speakers from multiple computers on a network.

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  • shabaz
    shabaz over 6 years ago +2
    Wow, I'm not sure I could work with a speaker nearby that I couldn't easily turn down/switch off at times. If you're just interested in productivity and want to have a quick solution, consider something…
  • Jan Cumps
    Jan Cumps over 6 years ago in reply to Jan Cumps +1
    One of the possibilities is digital programmable logarithmic potentiometers, e.g.: https://www.analog.com/media/en/news-marketing-collateral/product-selection-guide/Choosing_the_Correct_Digipot.pdf If…
  • Jan Cumps
    Jan Cumps over 6 years ago in reply to shabaz +1
    shabaz wrote: .... but I don't know what power level the amp operates at, ‘.. 30 Watt per channel. It’s a serious kit.
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  • shabaz
    shabaz over 6 years ago

    Wow, I'm not sure I could work with a speaker nearby that I couldn't easily turn down/switch off at times.

    If you're just interested in productivity and want to have a quick solution, consider something like this 12-way rotary switch12-way rotary switch

    and lots of 10 ohm resistors (probably 1/2W ones should be fine, but I don't know what power level the amp operates at, so you may wish to go for (say) 1W resistors for some of them).

    Not the same as a remote-controlled app, but maybe quicker to assemble, connected directly to the speaker connections on your desk.

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  • Jan Cumps
    Jan Cumps over 6 years ago in reply to shabaz

    shabaz  wrote:

     

    .... but I don't know what power level the amp operates at, ‘..

    30 Watt per channel. It’s a serious kit.

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  • shabaz
    shabaz over 6 years ago in reply to Jan Cumps

    I see.. in that case, if it's cranked to the max, then at least 7W per resistor is needed for the first couple, reducing to about 5W or below for the remainder. These MCKNP 5W resistors are cheap, some could be paralleled for >7W capability (i.e. just buy all of the same value to get cheaper bulk cost).

    But it's not the same as digital control so maybe a redundant suggestion.

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  • shabaz
    shabaz over 6 years ago in reply to Jan Cumps

    I see.. in that case, if it's cranked to the max, then at least 7W per resistor is needed for the first couple, reducing to about 5W or below for the remainder. These MCKNP 5W resistors are cheap, some could be paralleled for >7W capability (i.e. just buy all of the same value to get cheaper bulk cost).

    But it's not the same as digital control so maybe a redundant suggestion.

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