 | | Re: Adder/Subtractor revisited —Bryan Beatty
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| | | (...) Actually, I've had pretty good luck with independently driven left and right drive trains; I haven't had a lot of problems with robots curving when I want them to go straight. I find the adder/subtracter useful for a different reason: it makes (...) (26 years ago, 6-Feb-99, to lugnet.robotics)
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| | | | | Re: Adder/Subtractor revisited —David Harry
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| | | | (...) Here's what I do and it works quite well. I have added a "partial duty cycle" mode to my motor control system. Basically I intermitantly turn off the motor for a very small increment of time. The time-average of a properly synchronized (...) (26 years ago, 7-Feb-99, to lugnet.robotics)
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| | | | | | Re: Adder/Subtractor revisited —Jim Moran
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| | | | | A nit, but you meant 75% duty cycle, no (or reversed your terms) ? -- SeeYa ! ---...--- Jim ---...--- Hello... Is this thing on ? David Harry wrote in message ... (...) (26 years ago, 7-Feb-99, to lugnet.robotics)
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| | | | | | Re: Adder/Subtractor revisited —Bryan Beatty
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| | | | (...) [snip] (...) I actually had already tried that, and couldn't get to work in these particular circumstances. I couldn't get the robot to turn off the motor for any period briefer than 50 ms, and even that short a period (coupled with setting (...) (26 years ago, 7-Feb-99, to lugnet.robotics)
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| | | | | | Re: Adder/Subtractor revisited —Dan B.Brockman
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| | | | There is a company in Chicago that does a lot with small motors; it's named Bodine Electric, and of course they have a web site at (URL) I can tell the motors in the RCX sets operate with pulse width modulation to control power. Bodine's site gives (...) (26 years ago, 7-Feb-99, to lugnet.robotics)
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