Volume pot and leds.

[Samycasanova]

My goal is to use one pot controlling the audio volume and having some leds around the pot knob turning on or off if i turn the pot to max or min. I want to use 6 to 10 leds to increase or decrease like a vu-meter ( but not blinking with the audio signal ) according to the Vol.
Sorry my bad English. I hope you understand this !

I thought using a stereo pot, one part of the pot will control the audio volume, the other will make leds go on or off, but i don´t have a clue how to do it !

Thanks.

 

[TrevorP]

Well why not use a stereo pot and one part of the resistor would control the input current into an LM3915 or a similar model...that one is logarithmic...which MIGHT be what you want.

**broken link removed**

That drives 10 leds...and it's how I would do it. Remember the pot will probably have to be logarithmic because sound is. The component would have to be anti-logarithmic almost... It also supports dot and bar mode.

 

[Nigel Goodwin]

Well at the risk of a non-electronic solution?, why not have a ring of ten LED's lit all the time, and have a solid disk with a hole in it attached to the knob. As you rotate the knob the hole in the disk moves along the LED's, allowing each one in turn to be seen.

 

[CheapSlider]

You could use a wafer switch attached to the shaft of the volume control.

 

[Samycasanova]

I though using something like that but i don´t know how can i use a regular 16mm or 24mm pot like this one https://www.mouser.com/search/Produ...40R1-BF3virtualkey14860000virtualkey31VC303-F , and use one of those wafers...
I put most of my circuits in tiny enclosures, using a potentiometer with a longer shaft is not a good solution for me.