The rotation sensor is a sensor
that measures the rotation of an axle. As the axle turns, the
rotation sensor counts how much the axle rotates. There are 16
counts in 1 complete revolution of the axle. The number of counts
is what the RCX reads as input.
When the axle stops rotating, the rotation sensor stops counting.
If the axle starts to rotate again, the rotation sensor begins
counting where it left off. If the axle rotates in the opposite
direction, the rotation sensor counts backward. It is important
to reset the rotation sensor at the start of your program.
Rotation sensors are very useful to measure and control how far
your robot moves. By measuring how many times your robot's wheels
turn, and knowing the circumference of the wheels, you
can measure how far your robot has moved. You can also use a
rotation sensor to measure rotational speed. If you count how
many revolutions an axle makes in a certain amount of time, then
you can use this to calculate the number of rotations per second
of the axle.
If a rotation sensor has 16 counts in 1 revolution, how many
degrees does the axle turn for 1 count of the rotation sensor?
Click here for
See also: Sensors, Programming: Rotation sensor,