Subject:
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Re: multi-device output controller (fwd)
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Newsgroups:
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lugnet.robotics
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Date:
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Fri, 26 Mar 1999 17:33:18 GMT
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Original-From:
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Bill Flanagan <BFLANAGAN@MEDIAONE.nospamNET>
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Viewed:
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2697 times
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Cool. You can also add things like the following:
1. Serial LCD display
2. GPS devices
3. additional infrared send/recieve
4. ANY PC project that is serial port connected!
I like the idea of multiple serial channels; this means that you can talk to
the PC AND drive a lot of devices.
OK now the details.
Iguana Labs sells a simple project that contains a MAX232, 5 capacitors and
a DB9 connector for 5 bucks. This needs to be connected to the components
to support your next steps:
6. Send to a MAX232 devices and wallah, RS-232. OK
5. serialize
OK
4. A/D (convert from anlalog to digital) How? What
components?
3. S&H (sample and hold: buffer) How? What
components?
2. Integrate
How? What components
1. Take the analog RCX output How? What
components?
I am more than happy to attempt to
1. be logical
2. visit Radio Shack
3. Buy components
4. Do soldering
5. Write assemmbler code
6. Debug.
However, I need help on the component selection and design side.
I promise not to bog the intelligencia of this community down with dumb
questions when Forrest Mims can provide an answer!
Thanks again.
-----Original Message-----
From: Jim Choate <ravage@einstein.ssz.com>
To: lego-robotics@crynwr.com <lego-robotics@crynwr.com>
Date: Friday, March 26, 1999 11:35 AM
Subject: Re: multi-device output controller (fwd)
>
> ----- Forwarded message from Bill Flanagan -----
>
> From: "Bill Flanagan" <bflanagan@mediaone.net>
> Subject: Re: multi-device output controller (fwd)
> Date: Fri, 26 Mar 1999 11:26:31 -0500
>
> How about an RCX to RS232 connection to use off the shelf components?
>
> Check out this link.
>
> http://www.sbsi.net/bin2/hazel.exe?client=59089090&action=serve&item=electr • o
> nics/motor_driver_interfaces.html
>
> MondoTronics sells a simple serial servo contol that services up to 8 • motors
> via an rs232 port ($49.95). I have seen a simple version adapted for a • Palm
> Pilot for $89.00 that services 8 servos as well.
>
> To get the multimotor control that you want and MANY other other devices,
> all you need is a way to drive an RS232 port on the RCX. Has anyone • thought
> about how this might be done?
>
> ----- End of forwarded message from Bill Flanagan -----
>
> It's actualy pretty easy. Take the analog RCX output, integrate, S&H, A/D,
> serialize and then send to a MAX232 devices and wallah, RS-232.
>
> If you were to pair the output and the input (assuming both 8-bit) you • could
> then have 3 bi-directional RS-232 channels.
>
> This has some interesting possibilities in that you load 3 images of a
> serial protocol handler onto the RCX and then you could use the IR link in
> real-time to handle data bidirectionaly to a normal PC. In effect you turn
> the RCX into a communications controller.
>
>
> ____________________________________________________________________
>
> The trouble with acting according to your conscience is that
> once you start doing it, nobody can trust you any more.
>
> Alexis A. Gilliland
>
> The Armadillo Group ,::////;::-. James Choate
> Austin, Tx /:'///// ``::>/|/ ravage@ssz.com
> www.ssz.com .', |||| `/( e\ 512-451-7087
> -====~~mm-'`-```-mm --'-
> --------------------------------------------------------------------
> --
> Did you check the web site first?: http://www.crynwr.com/lego-robotics
--
Did you check the web site first?: http://www.crynwr.com/lego-robotics
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