the noisy sensor
the same readings, decided three ways: alone, averaged over five, averaged over ten.
sensor noise
last symbol: —
space · send b · send 25 r · reset 1 / 2 / 3 · noise
led off
threshold
led on
reads as off
reads as on
all three lanes read the same sensor at the same moment. they differ only in how many of those readings they average before deciding. a red dot is a wrong decision: that reading landed on the far side of the threshold.
one reading is a guess. a series is evidence, and it costs you time.