It's been a while since I've worked on this, but I'll still update this on my progress. I have most of the device working for version 1.1 with the Teensy 3.1. The extra processing powere means there is no noticable delay when the ideal hum repeates. It is assembled and there is good detection of swings and clashes, the lighted momentary switch is rigged up and the code is working. Essentially what is left is more documentation, adding the audio amp, and the LED current supplies. I ordered a hilt from Adaptive Saber Parts, once that arrives I'll have a better idea of how much room I have and renewed interest.