IoT experimentation, midi pipe organ pedals and remote controlled passive XLR summer

Thanks @Gordon!

...meanwhile I've put my dad to work on the actual pedals. It's kind of messy, but it works!

Here's the pedals:

These will be normally closed, and opened when the pedals are pressed.
Next up is to mount everything in a project box and wire up all those switches. Then of course, we'll record a video of them in action :)