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Subject: 
Re: Fishing for a tasty linkage/gearing/robotic building thread...
Newsgroups: 
lugnet.robotics
Date: 
Wed, 12 May 1999 13:42:50 GMT
Viewed: 
1441 times
  
In lugnet.robotics, David Warnock writes:
Michael,

You could have one set of axles for forward/backward with 1 motor driving both
sides so you go straight.

Then to change direction a second motor lowers a set of wheels/axles are right
angles to the first set lifting the original wheels of the ground. Then use a
3rd motor to drive the bot from side to side.

I was toying around with something like this. A foot like thing would come
down, lift the whole vehicle up off the ground, then turn it right or left 90
degrees (maybe even a variable angle), and set it back down.  It does look like
a three motor problem.  It would be nice to pull it off with only the parts in
the box.  It doesn't need to go backwards, perhaps the drive motor could power
the foot down when it is in reverse.



Message has 1 Reply:
  Re: Fishing for a tasty linkage/gearing/robotic building thread...
 
(...) You could use a synchro-drive type of platform. This has been mentioned on here a few times before with varying levels of complexity. Since you only need 90 degree angles then you could probably get away with synchronizing the wheel direction (...) (25 years ago, 12-May-99, to lugnet.robotics)

Message is in Reply To:
  Re: Fishing for a tasty linkage/gearing/robotic building thread...
 
Michael, If you only need to make right angle changes of direction how about a design where the robot does not turn. You could have one set of axles for forward/backward with 1 motor driving both sides so you go straight. Then to change direction a (...) (25 years ago, 12-May-99, to lugnet.robotics)

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