RoboSavvy Forum

RBC warm and motion questions (noob)

2009-08-17T02:10:19+01:00

I tried. Not so good. I will get there!

http://www.youtube.com/watch?v=Ir1yPQeQeWQ

Statistics: Posted by Ketchup — Mon Aug 17, 2009 2:10 am

RBC warm and motion questions (noob)

2009-08-17T01:30:33+01:00

Thanks.
This video shows something like what I'm trying to get it to do.

http://www.youtube.com/watch?v=Oqd_ZvDngi4

It's a slow walk, but it's balanced on each step.

One of the problems I'm having is supporting the robot while posing and then clicking capture.

Statistics: Posted by Ketchup — Mon Aug 17, 2009 1:30 am

RBC warm and motion questions (noob)

2009-08-15T01:16:31+01:00

Great progress, I know how difficult it is to get the this stage with Motionbuilder. You are progressing far faster than me.

For the feet, you have correctly noted that the slip on the feet is closely related to the walking gait and other motions. Adding a small amount of grip to the feet makes a lot of difference.

Try masking tape first, then electrical tape. The cheap pvc tape, then the thicker higher quality more rubbery tape. Also experimant where to put it since it may impact other moves which require slipping of part of the the feet, like the get up moves.

The faster walks are not a sequence of stable poses. Also you will find the arms have surprising large impact to the balance.

Please continue to share your progress

Statistics: Posted by i-Bot — Sat Aug 15, 2009 1:16 am

RBC warm and motion questions (noob)

2009-08-14T21:26:56+01:00

I did it! I made it do a head stand and back. It took me about an hour due to MotionBuilder's wonky scene issues I was having. I couldn't delete a scene. It seemed it remembered the scene in the blank space below the previous scene.

Once I figured out how to do it, it got easier.

Here's the video. It's crude, I know, and not very smooth, but it worked. I added a bow and a little wave at the end.

I don't like the "shuffle walk" the it does so I want to try some different gaites. I think I may need to put something on the feet to keep them from slipping. (Any ideas with the slipping?)

http://www.youtube.com/watch?v=lFXlCKKF1mE

Statistics: Posted by Ketchup — Fri Aug 14, 2009 9:26 pm

RBC warm and motion questions (noob)

2009-08-13T14:19:58+01:00

The RBC does get fairly warm. The power from the supply is dropped via some diodes before going to the servos and it seems to be these that get warm. I have had no problems

Statistics: Posted by i-Bot — Thu Aug 13, 2009 2:19 pm

RBC warm and motion questions (noob)

2009-08-13T12:38:10+01:00

Hi Ketchup

As far as I know there is no stand available for Robobuilder.

The software is indeed a bit confusing but once you get the hang of it you should be OK.

With regards to making motions with the legs, you have the option to select only the servos that you want to move so I would suggest you break the motion down in many parts/steps so that only one leg is programmed at a time.
This way, the other leg can be holding torque and make the robot stand still.

Statistics: Posted by PedroR — Thu Aug 13, 2009 12:38 pm

RBC warm and motion questions (noob)

2009-08-12T15:22:42+01:00

Hi all!
I was getting familiar with the Robobuilder software last night and had the power adapter plugged in. The RBC seemed to be a bit warm. Not hot, just warm. I'm assuming this is normal as it was holding the neutral pose for quite some time.

Also, what's the best way to create motions? The arms are no problem since the legs are "holding" while you pose the arms using the capture process.

I'd like to start making walking motions and found that due to the weight of the 'bot it's quite difficult to hold it suspended, pose, and click the capture button at the same time. I also tried using the "move the dials" method but it seems too inaccurate. Is there a stand available like the Robonova has?

If anyone can provide tips I would be grateful.

Thanks!

Statistics: Posted by Ketchup — Wed Aug 12, 2009 3:22 pm