Merge pull request #63 from per1234/analog-pin-name

Use unambiguous pin name for Knob example's analog input

Author: per1234

examples/Knob/Knob.ino

@@ -11,7 +11,7 @@
 
 Servo myservo;  // create servo object to control a servo
 
-int potpin = 0;  // analog pin used to connect the potentiometer
+int potpin = A0;  // analog pin used to connect the potentiometer
 int val;    // variable to read the value from the analog pin
 
 void setup() {