Whats the problem about a bigger knob ? You canot put a microcontroller, sensors, radio, antena and battery and circuitry without adding size. Since now all the djs who tested ( hardocre sctachers ) say that bigger knob make easier cuts
Yes, you are right, prototype was bulky ! But thats actually why prototype are for, testing and seeing whats wrong Maybe it was not clear enough in the first video. How the ctrl cap look like today
https://www.ctrl-cap.club/