To Do

  1. Revise the example code so that the servo moves through the discrete positions:
    0°, 10°, 20°, etc.

  2. Revise the example code to experiment with the delay time and see how short
    you can make it before the servo starts mis-behaving.

  3. Revise the example code so that the on-board LED blinks for a short time
    (say, 20 msec) when the servo reaches its extreme clockwise position.

  4. Modify the loop() function so that it calculates the difference between
    the current position angle of the servo and the target position angle.
    Display that difference in the Serial Console.

  5. Show the user how much time it took to get from the current position angle
    of the servo to the target position. To do that, use the Arduino function
    millis() which reports the number of milliseconds since the board was last
    reset; millis() takes no arguments; it returns a long value. So, just
    before setting the servo to a new position, execute a command like this:

long t0 = millis();

Then move the servo, and execute another invocation of millis():

long t1 = millis();

Then report the difference between the two to the Serial Console.


  1. Improve on the last exercise, by getting the sketch to compute the
    average sweep speed, i.e.,

int speed = ((final angle) - (initial angle) )/(t1-t0).