/* Use a potentiometer(ajustable resistor) to control servo position
 * Copyright John Yu
 * detail project see http://osoyoo.com/?p=172
*/
 

#include <Servo.h> 

Servo servo_obj;  // create servo object to control a servo 

int control_put = 0;  // define A0 port to receive control signal from potentiometer
int position;    // variable to read the value from the analog pin 

void setup() 
{ 
  servo_obj.attach(7);  // attaches the servo on pin 7 to the servo object 
} 

void loop() 
{ 
  position = map(analogRead(control_put), 0, 1023, 0, 179);     //get input signal from A0,convert it into angle value
  servo_obj.write(position);                  // sets the servo position according to the scaled value 
  delay(25);                        
}