BasicMicro - Forums

www.basicmicro.com
It is currently Mon May 21, 2012 8:27 pm

All times are UTC - 8 hours [ DST ]




Post new topic Reply to topic  [ 2 posts ] 
Author Message
 Post subject: Scorbot Robotic Arm IK
PostPosted: Fri Jul 08, 2011 12:12 pm 
Offline
Master

Joined: Tue Jun 22, 2010 1:15 pm
Posts: 203
Hi Nathan,

Just read your comments on Trig on the 'Pros and IK calcs.

I've just bought a used Scorbot robot arm :

http://rssc.org/content/my-scorbot-robot-arm

And the simple control program an driver box don't appear to support coordinated moves. The arm uses geared 12 V. pitman DC servo motors with modest (6 step) encoders. Typical Jointed Arm Revolute construction. While I'm OK on leg and arm IKs, this arm has belts that pass over pulleys out to the distal end (grippers), so there is a parallelogram action, i.e., the grippers tend to stay in the same aspect relative to the arm (same plane). That's a little different from most LM (R/C Servo) arms! I'd think one would just "add in" the angle of the previous joint to the distal joints. Is that right? Have you written code for these?

I'm considering driving the arm directly with RoboClaws and the Mad Hatter. That would be cool!

Alan KM6VV

_________________
Visit:
http://groups.yahoo.com/group/SherlineCNC/
http://tech.groups.yahoo.com/group/HexapodRobotIK/


Top
 Profile  
 
 Post subject: Re: Scorbot Robotic Arm IK
PostPosted: Fri Jul 08, 2011 2:10 pm 
Offline
Master

Joined: Tue Jun 22, 2010 1:15 pm
Posts: 203
Moved to RoboClaw topics.

Alan KM6VV

_________________
Visit:
http://groups.yahoo.com/group/SherlineCNC/
http://tech.groups.yahoo.com/group/HexapodRobotIK/


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 2 posts ] 

All times are UTC - 8 hours [ DST ]


Who is online

Users browsing this forum: No registered users and 1 guest


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Jump to:  
cron
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group

phpBB SEO