RandomBlinkF<MILLIHZ>
Randomly returns either 0 or 32768 for each LED. The returned value is held, but changed to a new random value MILLIHZ * 1000 times per second.
https://github.com/profezzorn/ProffieOS/blob/6f8add544c627172ad2dd698c90e5e55078a420a/functions/random_blink.h#L4