/* Robotic hand servo initial postion setting code
 by NARP (Noor Ahmed Raza Pirwani while doing FAB diploma from FABLAB Khairpur noorahmedpirwani@gmail.com)
 The code is designed to connect a motor with Arduino board while setting pin of arduino in a_servo.attach
 (write servo pwm pin here in code). The code is used to found the best position of robotic hand servo which
 I used in my another code to set initial position of motor  The code has no right issues so feel free to use it.
*/

#include <Servo.h>

char val; // variable to receive data from the serial port
Servo a_servo;  // create servo object to control a servo       // twelve servo objects can be created on most boards
int pos_a = 10;    // variable to store the servo position


void setup() {
  a_servo.attach(6);        // attaches the servo on pin 9 to the servo object
  a_servo.write(pos_a);
  Serial.begin(9600);       // start serial communication at 9600bps
}


void loop() {

  if( Serial.available() )       // if data is available to read
  {
    val = Serial.read();         // read it and store it in 'val'
  }
    if( val == 'A' ) {               // if 'A' was received
      if( pos_a < 170 ) {           // goes from 0 degrees to 180 degrees     // in steps of 1 degree
        pos_a =pos_a+5;
        a_servo.write(pos_a);        // tell servo to go to position in variable 'pos'
        delay(10);                  // waits 15ms for the servo to reach the position
      }
  }

   else if( val == 'a' ) {               // if 'A' was received
      if( pos_a >  10 ) {           // goes from 180 degrees to 0 degrees     // in steps of 1 degree
        pos_a =pos_a-5;
        a_servo.write(pos_a);        // tell servo to go to position in variable 'pos'
        delay(10);                  // waits 15ms for the servo to reach the position
      }
  }
 
}