Subject:
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Re: At last, RC servos are a go!
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Newsgroups:
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lugnet.robotics
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Date:
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Fri, 31 Dec 1999 22:13:56 GMT
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Original-From:
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Russell Nelson <nelson@AVOIDSPAMcrynwr.com>
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Viewed:
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973 times
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Pink Tail writes:
> The motor output from the RCX is decoded as a serial
> data stream. There are 14 possible codes, 7 on each
> wire from the RCX. In my case I have the PIC programmed
> to set a selected servo left or right of center for power settings
> 0 - 5 and set it to center on power 7. Reverse or forward
> controls which side of center is desired.
Very clever, grasshopper! That way you need nothing special in the
RCX firmware.
> Each servo drives a lego style valve. Actually, the servo
> arm is attached to the valve body, the center of rotation
> being set to the location of the dimple. The valve "lever"
> is held still in a technic beam hole. Since the pneumatic
> tubes are flexible, this doesn't matter.
Pictures?? How do you fix the servo to other lego bricks? For the
ones I tried, I hot-melt-glued them. Unfortunately, the servo was
stronger than the glue!
> I am in the process of converting the schematics to jpg
> format. If anybody out there is interested, let me know
> and I'll try and email you the info.
Email it to me and I'll put it on the web page.
--
-russ nelson <sig@russnelson.com> http://russnelson.com
Crynwr sells support for free software | PGPok | "Ask not what your country
521 Pleasant Valley Rd. | +1 315 268 1925 voice | can force other people to
Potsdam, NY 13676-3213 | +1 315 268 9201 FAX | do for you..." -Perry M.
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Message is in Reply To:
 | | At last, RC servos are a go!
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| I have finally cracked the RC servo/RCX connection. A fairly simpe PIC based device built into one of the larger battery housings. The one that comes with 8735. I hollowed out the on/off switch compartment and installed the tiny circuit. It still (...) (25 years ago, 1-Jan-00, to lugnet.robotics)
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