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Hacking Small Print Servers
Hacking Small Print Servers

New MessageHacking Small Print Servers (modified 0 times) pdp1145
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Hello,

Over the past couple of days I have been thinking about hacking the little print servers which seem to be sprouting
up everywhere. The price is still a little high but its dropping. Several varieties exist. Parallel to ethernet
or USB to ethernet. You get a mini-HTTP server usually too. My original thought was to use them at work with
labview to control relays. Has anyone done any hacking on them? Also many of the cable routers also have them built
in. Even wireless. Figure it out and wirelessly control lights, model trains etc.

Some examples:

Linksys EtherFast® 10/100 PrintServer
Ethernet to Parallel (3 port version is $149, I assume the single port is less)

I have never looked at the LPD/LPR protocol much. What does it take to send a byte?

Lexmark N4000e External Print Server (list $129.00)
Ethernet to USB. Could be interesting if you make it attach things other
than printers:

Q. Since the Lexmark N4000e offers a USB host port, does it support a USB hub?
A. The USB connection is designed only for direct attachment of a printer and does not function as a USB host port for other devices.

09-21-2003 08:57:48

New MessageRE:Hacking Small Print Servers (modified 0 times) Glitch
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pdp1145: Wouldn't it be easier to just buy a cheap I/O board on eBay? For example, click here. Cards with only digital I/O are often cheaper. This could be mated to a inexpensive 1/2 length SBC card for a small, compact stand alone system.

Also, check out Datel. Get on their mailing list. They often run "nearly give away" specials on some of their low end I/O equipment.

As far as the parallel port stuff goes... MPJA sells some kits (scroll down about 1/3 of the way) that might help you get started.

I've also seen instructions for home-grown parallel port digital I/O stuff on the web. These usually have scematics and example source code. A web search should turn up something.

I don't know the feasibility of driving the parallel port I/O hardware from dedicated print server hardware. It seems like it could be done. Personally, I use the dedicated I/O hardware.

HTH.


Glitch
Electronics run on smoke, if you let the smoke out they won't work
09-21-2003 10:23:43

New MessageRE:Hacking Small Print Servers (modified 0 times) Glitch
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Correction: I meant Dataq, not Datel
09-21-2003 13:51:31

New MessageRE:Hacking Small Print Servers (modified 0 times) pdp1145
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Glitch,

Thanks for the input. We actually do have some nice dedicated i/o equipment here. MPJA seems to have some
cool stuff for my personal use. What I was looking for for work was ethernet connectivity for the I/O. The
dedicated stuff is ethernet is quite pricey. Thanks Max

09-25-2003 07:49:44

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