I wanted to build a guitar myself, to understand how it worked and to find out what would fit me. I bought a DIY kit, put it together, replaced the pickups and other parts with better ones I had laying around. This sparked the Telecaster project, in which I modeled a Telecaster in Solidworks with the actual measurements of the parts I have, designed a custom pick guard based on the design of the Flying V guitar and made it machining ready.
Since I connect my guitar to my computer and add effects on it, I wanted to control these effects without interacting with my keyboard as it takes too long. The innovation behind this design is that there are two buttons hidden under the pick guard, built into the body of the guitar. These allow me to switch through effects very quickly and can be mapped to any other setting.
The body still has to be milled, but the electronics have been tested and work as intended. The pick guard was laser cut from a sheet of plastic.