• Slowly dim and brightens an LED over time.
  
• Swing a positional servo back and forth, so it's in one position when the LED is brightest, in another position when the light is dimmest, and it's in the middle when the LED is in the middle.
• Using a beeper, emit a tone at both extremes, so the Arduino beeps when the light is brightest and also when it is dimmest.

For a bonus, if you want to try to push yourself further, use a joystick or two buttons to control the Arduino. Be able to move the joystick right (or push one button) to have the LED/servo go in one direction, and move the joystick left (or push the other button) to have the LED/servo go in the other direction.

It turns out that there are some detailed rules on the Arduino involving which pins you can use at the same time. We'll talk about them. For the time being, do the following:

• Use pin 11 for the LED.
• Use pin 44 for the servo.
• Use pin 9 for the beeper.
  

Be prepared at the beginning of class on Thursday to show what you've accomplished, and also submit your program here via Moodle.