kopia lustrzana https://gitlab.com/sane-project/website
147 wiersze
5.5 KiB
HTML
147 wiersze
5.5 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"
|
|
"http://www.w3.org/TR/REC-html40/loose.dtd">
|
|
<HTML>
|
|
<HEAD>
|
|
<TITLE>sane-devel: Re: advice re modifications to a umax scanner</TITLE>
|
|
<META NAME="Author" CONTENT="Oliver Rauch (oliver.rauch@Wolfsburg.DE)">
|
|
<META NAME="Subject" CONTENT="Re: advice re modifications to a umax scanner">
|
|
</HEAD>
|
|
<BODY BGCOLOR="#FFFFFF" TEXT="#000000">
|
|
<H1>Re: advice re modifications to a umax scanner</H1>
|
|
<!-- received="Wed Feb 7 11:58:40 2001" -->
|
|
<!-- isoreceived="20010207195840" -->
|
|
<!-- sent="Wed, 07 Feb 2001 20:29:07 +0100" -->
|
|
<!-- isosent="20010207192907" -->
|
|
<!-- name="Oliver Rauch" -->
|
|
<!-- email="oliver.rauch@Wolfsburg.DE" -->
|
|
<!-- subject="Re: advice re modifications to a umax scanner" -->
|
|
<!-- id="3A81A203.81827551@wolfsburg.de" -->
|
|
<!-- inreplyto="3A80D9A0.9224CB5@cmis.csiro.au" -->
|
|
<STRONG>From:</STRONG> Oliver Rauch (<A HREF="mailto:oliver.rauch@Wolfsburg.DE?Subject=Re:%20advice%20re%20modifications%20to%20a%20umax%20scanner&In-Reply-To=<3A81A203.81827551@wolfsburg.de>"><EM>oliver.rauch@Wolfsburg.DE</EM></A>)<BR>
|
|
<STRONG>Date:</STRONG> Wed Feb 07 2001 - 11:29:07 PST
|
|
<P>
|
|
<!-- next="start" -->
|
|
<LI><STRONG>Next message:</STRONG> <A HREF="0067.html">Oliver Rauch: "Re: mailing-list policy"</A>
|
|
<UL>
|
|
<LI><STRONG>Previous message:</STRONG> <A HREF="0065.html">SCC: "Re: choice of scanner"</A>
|
|
<LI><STRONG>In reply to:</STRONG> <A HREF="0054.html">Richard Beare: "advice re modifications to a umax scanner"</A>
|
|
<!-- nextthread="start" -->
|
|
<!-- reply="end" -->
|
|
<LI><STRONG>Messages sorted by:</STRONG>
|
|
<A HREF="date.html#66">[ date ]</A>
|
|
<A HREF="index.html#66">[ thread ]</A>
|
|
<A HREF="subject.html#66">[ subject ]</A>
|
|
<A HREF="author.html#66">[ author ]</A>
|
|
</UL>
|
|
<HR NOSHADE><P>
|
|
<!-- body="start" -->
|
|
<P>
|
|
Richard Beare wrote:
|
|
<BR>
|
|
<EM>>
|
|
</EM><BR>
|
|
<EM>> Hi everyone
|
|
</EM><BR>
|
|
<EM>>
|
|
</EM><BR>
|
|
<EM>> I'm planning on building a machine that uses parts from a umax powerlook
|
|
</EM><BR>
|
|
<EM>> III. The idea is to use the scan head and control board and throw away
|
|
</EM><BR>
|
|
<EM>> the rest so that we can have a device with a moving table and a
|
|
</EM><BR>
|
|
<EM>> stationary scan head. The xy-table is going to be driven by a motion
|
|
</EM><BR>
|
|
<EM>> controller that is capable of considerably higer accuracy than the
|
|
</EM><BR>
|
|
<EM>> typical scanner internals. My plan is to have the motion controller
|
|
</EM><BR>
|
|
<EM>> reading the signals that usually drive the stepper motor and sending
|
|
</EM><BR>
|
|
<EM>> appropriate signals to the table to duplicate the expected motion. It
|
|
</EM><BR>
|
|
<EM>> will also be necessary to take over the end position sensor. I'm just
|
|
</EM><BR>
|
|
<EM>> starting to go through the code now with the aim of figuring out how
|
|
</EM><BR>
|
|
<EM>> much of the calibration and homing is controlled by the PC and how much
|
|
</EM><BR>
|
|
<EM>> is controlled by the embedded firmware.
|
|
</EM><BR>
|
|
<P>Hi Richard,
|
|
<BR>
|
|
<P>did you get the umax scsi scanner documentation?
|
|
<BR>
|
|
There is a link on my homepage.
|
|
<BR>
|
|
<P>The umax scsi scanners do almost all in firmware.
|
|
<BR>
|
|
In general I do not see a problem in what you do.
|
|
<BR>
|
|
Two things you have to care about:
|
|
<BR>
|
|
1) calibration is done on a white part in the
|
|
<BR>
|
|
scanner chassis.
|
|
<BR>
|
|
2) The maximum scanlength is selected by the driver
|
|
<BR>
|
|
by setting a integer value based on 1/1200 dpi. I think the
|
|
<BR>
|
|
value has a size of 2 bytes. The umax scanners do not test
|
|
<BR>
|
|
if the selected scanlength is larger than the way the
|
|
<BR>
|
|
scanhead can be moved, so you should be able to set the value
|
|
<BR>
|
|
to 7fff hex or to ffff hex. This means you should be able to scan
|
|
<BR>
|
|
up to 27 or 54 inch.
|
|
<BR>
|
|
<P>There also is a parameter that is planed to change the 1/1200 dpi
|
|
<BR>
|
|
but I do not know if any umax scanner does use this parameter.
|
|
<BR>
|
|
<P>Good Luck
|
|
<BR>
|
|
Bye
|
|
<BR>
|
|
Oliver
|
|
<BR>
|
|
<P><PRE>
|
|
--
|
|
Homepage: <A HREF="http://www.wolfsburg.de/~rauch">http://www.wolfsburg.de/~rauch</A>
|
|
sane-umax: <A HREF="http://www.wolfsburg.de/~rauch/sane/sane-umax.html">http://www.wolfsburg.de/~rauch/sane/sane-umax.html</A>
|
|
xsane: <A HREF="http://www.wolfsburg.de/~rauch/sane/sane-xsane.html">http://www.wolfsburg.de/~rauch/sane/sane-xsane.html</A>
|
|
E-Mail: mailto:<A HREF="mailto:Oliver.Rauch@Wolfsburg.DE?Subject=Re:%20advice%20re%20modifications%20to%20a%20umax%20scanner&In-Reply-To=<3A81A203.81827551@wolfsburg.de>">Oliver.Rauch@Wolfsburg.DE</A>
|
|
<P>--
|
|
Source code, list archive, and docs: <A HREF="http://www.mostang.com/sane/">http://www.mostang.com/sane/</A>
|
|
To unsubscribe: echo unsubscribe sane-devel | mail <A HREF="mailto:majordomo@mostang.com?Subject=Re:%20advice%20re%20modifications%20to%20a%20umax%20scanner&In-Reply-To=<3A81A203.81827551@wolfsburg.de>">majordomo@mostang.com</A>
|
|
</PRE>
|
|
<P><!-- body="end" -->
|
|
<HR NOSHADE>
|
|
<UL>
|
|
<!-- next="start" -->
|
|
<LI><STRONG>Next message:</STRONG> <A HREF="0067.html">Oliver Rauch: "Re: mailing-list policy"</A>
|
|
<LI><STRONG>Previous message:</STRONG> <A HREF="0065.html">SCC: "Re: choice of scanner"</A>
|
|
<LI><STRONG>In reply to:</STRONG> <A HREF="0054.html">Richard Beare: "advice re modifications to a umax scanner"</A>
|
|
<!-- nextthread="start" -->
|
|
<!-- reply="end" -->
|
|
<LI><STRONG>Messages sorted by:</STRONG>
|
|
<A HREF="date.html#66">[ date ]</A>
|
|
<A HREF="index.html#66">[ thread ]</A>
|
|
<A HREF="subject.html#66">[ subject ]</A>
|
|
<A HREF="author.html#66">[ author ]</A>
|
|
</UL>
|
|
<!-- trailer="footer" -->
|
|
<HR NOSHADE>
|
|
<P>
|
|
<SMALL>
|
|
<EM>
|
|
This archive was generated by <A HREF="http://www.hypermail.org/">hypermail 2b29</A>
|
|
: <EM>Wed Feb 07 2001 - 12:02:35 PST</EM>
|
|
</EM>
|
|
</SMALL>
|
|
</BODY>
|
|
</HTML>
|