Problems trying to communicate with a Digital Servo

hi everyone, i'm trying move 135 degrees 2 savox 1283sg coreless digital servos in opposite directions using 2 push buttons inputs. ran code 2 s3003 futaba analog servos , worked perfectly. sadly not case digital servos. 1 of them moving well, other 1 after first movement freezes. tried find out info , read current draw , stuff, nothing has solved problem.

i'm attaching picture of circuit , actual code.

thanks!



this code:

code: [select]

#include <servo.h>

#define servo_left  3
#define servo_right 5
#define down_button 7
#define up_button   9

#define left_open 180
#define left_close 45
#define right_open  0
#define right_close 135
#define slope .8
#define initial_servo_pos_left  left_open
#define initial_servo_pos_right right_open


servo servoleft;
servo servoright;

int buttonstate1;
int buttonstate2;

float angle1;
float angle2;

bool button1;
bool button2;

float delta(float start, float stop, float slope)
{
   return start + (stop-start) * slope;
}

void setup()
{
   // initialize arduino pins
   servoleft.attach(servo_left);
   servoright.attach(servo_right);
   pinmode(down_button, input);
   pinmode(up_button, input);

   // initial servo posiotion
   angle1 = initial_servo_pos_left;
   angle2 = initial_servo_pos_right;

   servoleft.write(angle1);
   servoright.write(angle2);

   // wait 1 second
   delay(1000);
}

void loop()
{
 // read input
   buttonstate1 = digitalread(down_button);
   buttonstate2 = digitalread(up_button);

   if(buttonstate2)
   {
      button2 = true;
      button1 = false;
   }
   if(buttonstate1)
   {
      button1 = true;
      button2 = false;
   }

 // action
   if(button2)
   {
      angle1 = round(delta(angle1, left_open , slope));
      angle2 = round(delta(angle2, right_open, slope));

      servoleft.write(angle1);
      servoright.write(angle2);

      if(angle1 == left_open)
      {
         button2 = false;
      }
   }
 
   if(button1)
   {
      angle1 = round(delta(angle1, left_close , slope));
      angle2 = round(delta(angle2, right_close, slope));

      servoleft.write(angle1);
      servoright.write(angle2);

      if(angle1 >= left_close)
      {
         button1 = false;
      }
   }
//   delay(100);
}

the servos should have own power supply.  shouldn't trying pull power through arduino unless whole purpose of project magic smoke out of arduino. 

Arduino Forum > Using Arduino > Motors, Mechanics, and Power (Moderator: fabioc84) > Problems trying to communicate with a Digital Servo

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