Newsgroups: comp.robotics
Path: cantaloupe.srv.cs.cmu.edu!das-news2.harvard.edu!news2.near.net!news.mathworks.com!uunet!in1.uu.net!portal.austin.ibm.com!awdprime.austin.ibm.com!awdprime.austin.ibm.com.!nahshon
From: nahshon@vnet.ibm.com (Itai Nahshon)
Subject: Re: PC to control servos
Sender: news@austin.ibm.com (News id)
Message-ID: <NAHSHON.95Jun12162917@rs3bt-01.haifa.ibm.com>
In-Reply-To: payman@hookup.net's message of Fri, 9 Jun 1995 23:04:28 GMT
Date: Mon, 12 Jun 1995 13:29:17 GMT
References: <payman.25.2FD8D37C@hookup.net>
Organization: IBM Israel Science and Technology, Haifa, Israel
Lines: 45

In article <payman.25.2FD8D37C@hookup.net> payman@hookup.net (Payman Khalili) writes:

>Hello folks,

>I'm wondering if anyone out there has used a PC to control servo motors
>from radio controlled kits. 

>If so, is there an off-the-shelf card which I can plug in my PC to do this?
>If not, does anyone know what's required to do this?  

>I wanted to build a PC-based robot which would require around 10 servo motors 
>or so.  

>Any info would be appreciated!

>Cheers,

>-Payman

I do not know of an off-the-shelf card. If you want to build
something around a 68HC11 read on...

I have downloaded a program which controls up to 7 servos
(that's done as a background job...) to cher.media.mit.edu.
I don't know if and where it is now. Last time I saw it it
was still in the incoming directory but probably moved
do a different place. I think tha name was itai.asm.

It is easy to change the program to control more servos.
It's written for a miniboard with little additional hardware.
There's some documentation as comments in the asm source file. 

Connected to a PC via a serial port (well, you can rewrite
the PC interface part and use the parallel port).

If you are interested and cannot find the sources or
just want to discuss HC11 and R/C servo ideas please write
to nahshon@vnet.ibm.com.

Itai Nahshon



 

