After some searching, he’s found Microchip’s MGC3130, a gesture sensing chip that works with “E-fields”, more precise than the usual ones, almost as cheap, and with a lovely twist.
The new LD45R Adjustable Beam Flashlight, HL45R Gesture Sensing Headlamp, E06R EDC Flashlight, and Clip On SW05R-RED and UV Flashlights deliver advanced functionality, durability, and adaptability ...