Slowing Servos

[Rushmoore]

Hi there,

I have a servo connected to a joystick such that when I move the joystick handle up the servo horn moves up and vice versa. The code for this is running though the arduino. At the moment the servo is moving far too fast, how can I do this?
Is there some code I can use as I can't seem to find any suggestions on the nets.
Here is the part of my code which controls the servo:
ServoVal = analogRead(joystick);
ServoVal = map(ServoVal, 0, 1023, 80, 0);
Myservo.write(ServoVal);

Thank you!

 

[Harald Kapp]

When you set the servo position with these three lines, the servo will move to the new position as fast as it can.
To slow it down increment the position slowly e.g. within a loop. I'm not too familiar with arduino code, but surely you see what I mean:

OldServoVal = NewServoVal; // remember current position
NewServoVal = analogRead(joystick); // get new position
NewServoVal = map(NewServoVal, 0, 1023, 80, 0);

// this loop requires correct definition of pos...
if (NewServoVal > OldServoVal) // have to ramp up
   for (pos=OldServoVal; pos<NewServoVal;pos++) {
      Myservo.write(pos);
      delay(some_meaningful_delay); // fit to your needs
   }
else // have to ramp down
   for (pos=OldServoVal; pos>NewServoVal;pos--) {
      Myservo.write(pos);
      delay(some_meaningful_delay); // fit to your needs
   }

The code can surely be improved, it's just a quick shot from the hip.

 

[Rushmoore]

Thank you very much for this!

 

[Harald Kapp]

Let us (me) know if it works, please.

 

[CDRIVE]

Let us (me) know if it works, please.

Harald, this amazing. I've never coded in any form of C but after years of reading code snippets like yours I think I'm beginning to learn it through osmosis!

Chris