Simple question, any reason I cannot put a motion senor switch directly on the 3.5 Teensy which is powered directly to a 5V switching power supply? My setup right now has a 5V power supply with an off/on switch, I would like to wire the Teensy to a motion switch in serial with the existing off/on which would have power on it continually. Any motion would only power the Teensy3.5 as the leds are wired independent of teensy itself. The leds need the Teensy to power up so a motion detector on the Teensy would enable me to light up when someone enters the room but power is always there with the off/on switch.