RoboSavvy Forum

wckReadPos

2013-05-22T04:03:19+01:00

I tried this:

Code:: if (rbWCK.wckReadPos(11)) { if (rbWCK.respnse[0] == 0) { rbWCK.wckMovePos(11, Convert.ToByte(trackBar1.Value), 2); textBox_pos.Text = Convert.ToString(trackBar1.Value); rbWCK.delay_ms(50); if (rbWCK.wckReadPos(11)) { richTextBox1.Text = "Servo 11 end posture:" + Convert.ToString(rbWCK.respnse[1]); } } } else { textBox_pos.Text = "Servo 11 NOT CONNECTED"; }

And I found that as same condition as I mentioned.

If I suddenly pull the trackBar fast and use wckReadPos the value is

inaccuracy would increase a lot, bigger than 10 degrees.

If I increase the delay time, the motor would not move smoothly.

It's so strange.

Statistics: Posted by chickenkai — Wed May 22, 2013 4:03 am

wckReadPos

2013-05-21T15:49:26+01:00

hope this isn't a trick question - but yes - exactly. you may find you can reduce the value from 200ms down to may be 50-100ms. It partially depends on how big the move is, the servos have a velocity, so the bigger the move the longer it takes before it settles.

Statistics: Posted by l3v3rz — Tue May 21, 2013 3:49 pm

wckReadPos

2013-05-21T13:28:52+01:00

how can I do?

Like this?

Code:: if (i == 11) { rbWCK.wckMovePos(11, Convert.ToByte(trackBar1.Value), 2); textBox_pos.Text = Convert.ToString(trackBar1.Value); rbWCK.delay_ms(200); if (rbWCK.wckReadPos(11)) { richTextBox1.Text = "Servo 11 end:" + Convert.ToString(rbWCK.respnse[1]); } else { textBox_pos.Text = "Servo 11 NOT CONNECTED"; } }

Statistics: Posted by chickenkai — Tue May 21, 2013 1:28 pm

wckReadPos

2013-05-21T13:02:52+01:00

Its probably a timing issue - if you read servo too quickly it won't have settled , try a delay before reading or multiple wckReadPos until it settles.

Statistics: Posted by l3v3rz — Tue May 21, 2013 1:02 pm

wckReadPos

2013-05-21T11:26:51+01:00

Hi

I programming a code in C# with RobobuilderLib.dll

Now I use a trackBar to control the servo motor to move

But I Found a problem:

when I pull the trackBar slowly and use the function wckReadPos to

read the wck posture, the value is inaccuracy within 5 degrees,

but if I pull the trackBar fast and use wckReadPos the value is

inaccuracy would increase a lot, bigger than 10 degrees,

how can I solve this problem?

thanks!

Statistics: Posted by chickenkai — Tue May 21, 2013 11:26 am