//Using a Servo

int servoPin = A3;
Servo myServo;
int servoPos = 0;


void setup() {
    
// Attach the servo on the A3 pin to the servo object
myServo.attach (A3);
// Register to particle cloud to control Servo from cloud
Particle.function ("servo", servoControl);
// Keep a cloud variable for the current position
Particle.variable ("servoPos", &servoPos, INT);

}

void loop() {

}

int servoControl(String command)
{
    
    // convert string command from Particle cloud to an integer 
    int newPos = command.toInt();
    // make sure it is in the right range 0-180
    // set the position
    servoPos = constrain( newPos, 0, 180);
    // set the Servo
    myServo.write( servoPos);
    // done
    return 1;

}