Subject:
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Re: r/c servos
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Newsgroups:
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lugnet.robotics
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Date:
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Fri, 20 Aug 1999 20:52:54 GMT
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Viewed:
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880 times
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Robert Munafo <munafo@gcctechNO.SPAMcom> wrote:
> In lugnet.robotics, lego-robotics@crynwr.com (John Barnes) writes:
> > [...] This would set the average servo, which needs a pulse from about
> > 0.7 - 2.0 mS for 180 degress to one of about 45 steps or every 5 degrees
> > [...]
>
> I can't understand this. Can you correct your grammar so it is clear what
> you're saying the average servo needs?
I think what John was trying to say was that pulse widths between 0.7 ms
and 2.0 ms give servo rotations between 0 and 180 degrees. With 45 steps
in that range, you can control the servo in 5 degree increments.
Seems to me he was approximating a bit, since 180 degrees is either 36
steps of 5 degrees each or 45 steps of 4 degrees each; 45 steps of 5
degrees each adds up to 225 degrees.
-Kekoa
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Message has 2 Replies:
 | | Re: r/c servos
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| (...) That doesn't make sense either. If a single step of 2.0 ms causes 180 degrees of rotation, then how does 45 steps allow you to control it 5 degrees at a time? (...) Are you saying that the servo actually operates in steps of one degree each? (...) (25 years ago, 20-Aug-99, to lugnet.robotics)
| | | Obj.: r/c servos
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| To add more to all those servo information, I've build a servo controller which use the printer connector on the PC. It doesn't use any electronic, everything is made by software (Delphi 3.0) It is quite usefull to try this at home since you'll (...) (25 years ago, 23-Aug-99, to lugnet.robotics)
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Message is in Reply To:
| | Re: r/c servos
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| (...) I can't understand this. Can you correct your grammar so it is clear what you're saying the average servo needs? - Robert Munafo (URL) LEGO: TC+++(8480) SW++ #+ S-- LS++ Hsp M+ A@ LM++ YB64m IC13 (25 years ago, 20-Aug-99, to lugnet.robotics)
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