Servo time/speed and position control (using an Arduino)

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1

Is there a way to control servo position and speed at the same time? ex: you want to build a biped but you don't want the movements to be jerky.

thanks

2

Increment or decrement the

Increment or decrement the servo value with a small delay between each iteration. 

So instead of going from 0 to 90

you go from 0 to 1 to 2… 90 with small delays in between each. Use a for loop.

3

Ok thanks

Ok thanks

4

Looping movements

I’ve played with this a bit with multiple servo operated joints.

I found the best way to get smooth movement is to use nextmove assigned times.

This is just an example of what I’m talking about. (not actual code)

 

long NextMove;

int MoveDelay; ’ the number of milliseconds between each step, smaller steps = faster movement

int Step; ’ the amount the servo moves with each loop, keep this number small

int TargetPosition; ’ this controls where the joint is moving to, you just change the targetposition to make it move

loop(){

   if millis() >= NextMove and JointPosition <> TargetPosition then MoveJoint;

}

MoveJoint() {

   Int NewPosition = CurrentPosition + Step;

   rem the next two lines make sure you don’t overshoot the target

   If CurrentPosition < TargetPosition and NewPosition > TargetPosition then NewPosition = TargetPosition;

   if CurrentPosition > TargetPosition and NewPosition < TargetPosition then NewPosition = TargetPosition;

   Joint.move(NewPosition);

   CurrentPosition = NewPosition;

   NextMove = millis() + MoveDelay;

}

5

@Lasrin …This is a very

@Lasrin …This is a very useful when making cyborg because movement needs to be smooth which i struggled for some time. I ask wha0 library are you using here?  Also is there a way to use ultrasound sensor where the robot moves the servo s to maintain a fized distance from a persons face as some sort of interactive behavior.