Subject:
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Re: 6 servos
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Wed, 22 May 1996 12:21:14 GMT
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Original-From:
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Fred G. Martin <fredm@media.mit(ihatespam).edu>
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Viewed:
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1289 times
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This multiple servos thing is reaching FAQ status, and here is how I
plan to deal with it.
Scott Edwards Electronics sells a cheap ($30 kit, $45 assembled) servo
board that drives 8 servos. You can gang them to get 32 servos or
even more.
The boards take serial input (2400 or 9600 baud). It is
straightforward to write a 6811 assembly routine to output such serial
signals on an arbitrary digital output. If no one else does so, I
will write such a routine in the next few weeks, making the HB fully
capable of driving Scott's servo board.
(Of course, one could use the existing 9600 baud serial output, but
this is the interaction link between IC and the HB, so if you used
this to talk to the servo board then development/debugging would be
much harder.)
For more info on the servo board, contact
Scott Edwards Electronics
964 Cactus Wren Lane
Sierra Vista, AZ 85635
Tel: 520-459-4802
Fax: 520-459-0623
It's called the "Mini SSC (Serial Servo Controller)".
-Fred
> I want to build a six legged walking robot using the handyboard. I want
> to use 6 servo motors for that. I heard that the handyboard can only
> control 2 servos, but that there is a servo controller board which can
> control up to 32 servos, supplied by an american company. does anyone
> have experience with it? Is it fully compatible with the handyboard and
> its software? and were can i get more information on that?
>
> I hope somebody can provide me with some information.
>
> Thanks in advance and regards
>
> Jasper Hillebrand
> --
> ************************************
> *** J.T. Hillebrand ***
> *** C.Fagelstraat 38 ***
> *** 2613 GW Delft ***
> *** tel +31 15 2 159808 ***
> *** j.t.hillebrand@lr.tudelft.nl ***
> *** Ingenieur Ruimtevaarttechn. ***
> ************************************
>
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Message has 1 Reply:
 | | Re: 6 servos
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| (...) Are the digital outputs at 5v high? I think you mentioned on the HB homepage about the serial interface converting RS232 levels at +12 and -12v to TTL levels (5v). I'm not that familiar with the nitty gritty of RS232 so this kinda puzzles me. (...) (29 years ago, 22-May-96, to lugnet.robotics.handyboard)
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Message is in Reply To:
| | 6 servos
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| Hi all, I want to build a six legged walking robot using the handyboard. I want to use 6 servo motors for that. I heard that the handyboard can only control 2 servos, but that there is a servo controller board which can control up to 32 servos, (...) (29 years ago, 22-May-96, to lugnet.robotics.handyboard)
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