Digital Volume Control Pedal

[senoravocado]

Hello guys! I have a project that a bassist friend asked me to do, and I am not quite sure how to go about it! He was wanting a volume pedal but instead of having a foot treadle or a knob, he wanted it to just have 2 switches, one that is "volume down" and one that is "volume up" It would be just like a tv remote's volume buttons, but in a more rugged foot switch. I have done some googling and see that digital pots seem to be the way to go, but I was wondering what would be the simplest solution. He said that he would only need it to go from silent to unity, and i guess some leds to indicate what "level" he is at. I imagine that he would only need maybe 8-10 volume steps if that makes sense and he doesn't need any boost or anything. I am hoping this great community can help me out! Thanks!

[woolie]

Hello guys! I have a project that a bassist friend asked me to do, and I am not quite sure how to go about it! He was wanting a volume pedal but instead of having a foot treadle or a knob, he wanted it to just have 2 switches, one that is "volume down" and one that is "volume up" It would be just like a tv remote's volume buttons, but in a more rugged foot switch. I have done some googling and see that digital pots seem to be the way to go, but I was wondering what would be the simplest solution. He said that he would only need it to go from silent to unity, and i guess some leds to indicate what "level" he is at. I imagine that he would only need maybe 8-10 volume steps if that makes sense and he doesn't need any boost or anything. I am hoping this great community can help me out! Thanks!

This seems perfect for a small PIC chip. It would seem trivial to do with one of those. IMHO of course.


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[jimilee]

I actually did this with a boost in an A B switch. If you don't power it, the volume won't go past unity, and b went to the tuner. So it went in-> straight to boost-> A B switch -> out.


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[blearyeyes]

There is an EXH volume dip passive that would
work. Simple.


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[madbean]

Another way to do it: micro-controller for optical control. Take an audio snippet of an optical tremolo, let the controller change the brightness of an LED/LDR combo. One switch makes it get brighter, the other switch get dimmer. Of course, you have to write some code for that!

Would actually be a neat project.

[senoravocado]

Thanks guys! Writing code for micro-controllers is something that I am not yet familiar with, but do plan on learning at some point! I am totally willing to give it a shot, but if I am being honest I would definitely need my hand to be held for most of the steps.

Blearyeyes-I tried to google "EXH volume dip passive" but wasn't sure what I was trying to find, is it a dip chip or maybe some kind of pedal?

While looking around I found this project http://audio.gotroot.ca/minivol/#parts Do you guys think this could be a solution?