1 files changed, 27 insertions, 0 deletions
diff --git a/arduino/libraries/Servo/examples/Knob/Knob.ino b/arduino/libraries/Servo/examples/Knob/Knob.ino
new file mode 100755
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+++ b/arduino/libraries/Servo/examples/Knob/Knob.ino
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+/*
+ Controlling a servo position using a potentiometer (variable resistor)
+ by Michal Rinott <http://people.interaction-ivrea.it/m.rinott>
+
+ modified on 8 Nov 2013
+ by Scott Fitzgerald
+ http://www.arduino.cc/en/Tutorial/Knob
+*/
+
+#include <Servo.h>
+
+Servo myservo;  // create servo object to control a servo
+
+int potpin = A0;  // analog pin used to connect the potentiometer
+int val;    // variable to read the value from the analog pin
+
+void setup() {
+  myservo.attach(A1);  // attaches the servo on pin 9 to the servo object
+}
+
+void loop() {
+  val = analogRead(potpin);            // reads the value of the potentiometer (value between 0 and 1023)
+  val = map(val, 0, 1023, 0, 180);     // scale it to use it with the servo (value between 0 and 180)
+  myservo.write(val);                  // sets the servo position according to the scaled value
+  delay(15);                           // waits for the servo to get there
+}
+