I built a Master-Volume-Pedal for the KPA from a simple Volume Pedal

sometimes when the Band gets louder or more silent, i have to adjust the Master Volume of the KPA.
I always tried to do this with the normal Volume Pedal attached to the Remote.
But for this purpose i always have to place it at the end of the signal Chain.

Now i made a solution.

An additional Volume pedal to control the monitor volume (and optional the main volume).

I bought a cheap Volume pedal (Bespeco VM12) as a B-Stock for only 15€.

i added a second pot to set a minimum value for the heel position, a switch to select the main Volume optional.
A Midi Socket and a power socket.

And of course an Arduino Nano to generate MIDI Signals from the Pot values.

works perfect for me

nice that someone is ínterested.

So i made a quick sketch with fritzing.

The Potentiometer on the right represents the Volume pedal.

With the other Potentiometer you can select the minimum Value.

I think it will be good to use the Pedal to send values between 75% and 100%, but have to try.

The LED is just a gimmick. its brightnes represents the Level.

With the On-Off Switch you can decide if only the monitor volume or also the main volume should be set.

KPA-Master-Volume.zip

Maybe you have to exchange the red and blue wires of the Potentiometer of the volume pedal as some pedals have different mechanics and turn the other way round.

For the selection of the minimum Value i used a Potentiometer with 10K linear.

Yes, this ist the Arduino i used.
Here you can download the Arduino programming environment :
https://www.arduino.cc/en/software
The few lines of code you find in the ZIP file of my last post.