Updated description

 It reads the state of a potentiometer (an analog input) and turns on an LED
 only if the LED goes above a certain threshold level. It prints the analog value
 regardless of the level.

updated to

 It reads the state of a potentiometer (an analog input) and turns on an LED
 only if the potentiometer goes above a certain threshold level. It prints the analog value
 regardless of the level.