Dear alf45tar,
Here below the pictures of my prototype. I really enjoy working on your project. I am an electronic engineer that hasn't touched a resistor in 25 years. I was looking for a footswtich and google brought me to your open source project. And I said... why not ?
I think I spent the same amount I would have spent if I bought it in a store but !! I LEARNT A LOT :

1. I discovered and learnt to use GitHub
2. I discovered what happened in the last 25 years with microcontrollers. I used to program in assembler.. (incredible)
3. I learnt somehow to use arduino and visual studio
4. I learnt to design in FUSION 360 !! that software is free !! - PCBs and the entire project.
5. I did PCBs again and instead of DIY at home, I learnt how to buy them in China. What a change !
6. I did my first 3D print ever. I was wondering what 3D printing is really for. I discovered a new world.
7. I discovered how cheap things are in AliExpress :) - no more amazon

Now I am willing to continue exploring coding in my free time !!
I can share my Fusion 360 project and PCBs if someone is interested. I do not recommend to print the box in 3D. It is very expensive. I should have done a metal sheet metal folding. (I might do that later). The rest was cheap and the fun was great !!

Alf45tar, thanks again for bringing me back to UNI and motivate me on this. Amazing journey !! I think that I discovered some bugs or I do not know how to use some features but I will comment on other threads. I already used several days the footswitch and it works GREAT with BIASFX2, Anytune, Qunatiloop all running in my iPad.

Thanks !
juani13973