Servo

Video:

Fritzing:

Code:

 

// Sweep
// by BARRAGAN  
#include  
Servo myservo; // create servo object to control a servo
int pos = 0; // variable to store the servo position 
void setup() { 
 myservo.attach(9); // attaches the servo on pin 9 to the servo object 
}
void loop() { 
 for(pos = 0; pos < 180; pos += 1) // goes from 0 degrees to 180 degrees 
 { // in steps of 1 degree 
 myservo.write(pos); // tell servo to go to position in variable 'pos' 
 delay(15); // waits 15ms for the servo to reach the position 
 }
 for(pos = 180; pos>=1; pos-=1) // goes from 180 degrees to 0 degrees 
 { 
 myservo.write(pos); // tell servo to go to position in variable 'pos' 
 delay(15); // waits 15ms for the servo to reach the position 
 }
} 

/pre