Quote Originally Posted by jak3676 View Post
I think I get your concept of your "abomination keyboard" - I press letter <X> on the top keyboard, and my key-press goes down through the stack and actually triggers <X> on multiple keyboards below. But I think key part you're looking for is isn't vertical alignment of the mechanical switches, but instead that you want a single key press to trigger 5 (or whatever number) of physical switches at one time. If you're already going down the route of 3D printing something, and if you're comfortable with a soldering iron, I'd just put 5 (or whatever number) of circuit boards in a stack - all connected to 1 physical key. 5 sets of keyboard circuity - 5 independent outputs, all connected to a single set of keys.

imagine if this is a normal keyboard
https://gyazo.com/301bba3a4455013706fe25e3522f9894

you'd end up with something more like this:
https://gyazo.com/e48f11ebe9b29b88cc72636acaedca9c

I'd find a place that sells pre-assembled PCBs, like this company: https://clueboard.co/parts?category=PCBs

The whole thing would be a modification of instructions similar to this: https://kotaku.com/how-to-build-your...ard-1797070430

mouse wise - I don't know that we actually need/want a broadcast mouse. I'd start with just a software KVM (mouse without boarders/synergy/barrier/etc) so that your 1 mouse can travel between and click within any window - but only 1 at a time. With the exception of trying to cast targetable spells (Blizzard, Flamestrike, etc) at range, you never actually need to have 1 mouse per window. I've always just macro'd my flamestrike to cast @player and that works fine.
yes, won’t be difficult to get this sent off to China for replication and samples, subject to beta stress testing.