Subject:
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Re: Using the Differential to drive straight.
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Newsgroups:
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lugnet.robotics
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Date:
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Tue, 15 Jan 2002 21:14:35 GMT
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Viewed:
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856 times
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Thanks Mike,
I'll be sure to try the adder-subtractor, as well as your new device.
I completed the prototype of the differential drive with a
transmission-lockable axle over the weekend. Actually, I can't claim credit
for it, I got the idea from Mario's book. Let me just say it works GREAT!!!
Even makes a cool "CLACK!" sound when the gears grind into place. If anyone
is interested, I'll try to describe it, or I can e-mail you a picture given
a week or two (to borrow a digital camera and upload the photo). The design
could be completed using only two motors. The drive motor on one wheel, a
ratchet on the other wheel (so you can turn by driving the motor backwards),
and a motor to operate the transmission switch.
I learned something that might have caused the other "driving straight"
designs in Mario's book not work so well. The wife likes nice, shiny, waxy
floors. I had a skidding problem. I might go back and build the other
models and test them on a surface with more friction.
Rich
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