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* has a DB-25 that probably wants to speak HP-GL over RS-232
* has a DB-25 that probably wants to speak HP-GL over RS-232


spit something out to it: 
We need:
dd if=/somefile of=/dev/ttyUSB0 bs=1
* service manuals
* pen holders
* paper
* software that emits HPGL
* a paper holder (probably a wire cage) to catch the print as it finishes


 
Documentation:
==Carousel setup==
[[Image:5763566793_8c8251d19f_o.jpg#file|plotter carousel pencap retracted|200px]]
[[Image:5763999946 7604492d97 o.jpg#file|plotter carousel pencapped | 200px]]
 
 
==Documentation==
* [http://www.hpmuseum.net/exhibit.php?hwdoc=81 Manuals and User Guides] and [http://www.hpmuseum.net/display_item.php?hw=81 product info], from HP museum.
* [http://www.hpmuseum.net/exhibit.php?hwdoc=81 Manuals and User Guides] and [http://www.hpmuseum.net/display_item.php?hw=81 product info], from HP museum.


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* [http://www.inkscape.org/ Inkscape], a vector drawing program, can export HPGL.
* [http://www.inkscape.org/ Inkscape], a vector drawing program, can export HPGL.
* [http://sk1project.org/modules.php?name=Products&product=uniconvertor Uniconvertor] may be able to output HPGL.
* [http://sk1project.org/modules.php?name=Products&product=uniconvertor Uniconvertor] may be able to output HPGL.
* [http://www.gnu.org/software/hp2xx/ hp2xx], a hpgl to jpg converter for sanity checking.


Pens:
* [http://www.draftingsteals.com/catalog-plotters---plotter-supplies-plotter-pens-rapidoplot-disposable-6820-series-e-style-plotter-p.html draftingsteals.com]
* [http://www.draftingsteals.com/catalog-plotters---plotter-supplies-plotter-pens-rapidoplot-disposable-6820-series-e-style-plotter-p.html draftingsteals.com]
* [http://www.westnc.com/hp-plotter-pens.html wncsupply.com]
* [http://www.westnc.com/hp-plotter-pens.html wncsupply.com]
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</PRE>
</PRE>


=Use It=
Settings:
Settings:
* Your program needs to use DOS line endings (\r\n)
* Your program needs to use DOS line endings (\r\n)
* Serial is 9600 8N1 on the PC side, plugged into the COMPUTER/MODEM port via a null modem cable
* Serial is 9600 8N1 on the PC side, plugged into the COMPUTER/MODEM port via a null modem cable (maybe)
* SERIAL:
* SERIAL:
** DATAFLOW: REMOTE, STANDALONE
** DATAFLOW: REMOTE, STANDALONE
Line 52: Line 49:
** BAUD: 9600
** BAUD: 9600
** HARDWIRE: OFF
** HARDWIRE: OFF
Using Inkscape:
* Load (or create) your vector graphic in Inkscape
* Prepare the image for printing:
* Scale the image (Inkscape mm units appear to work correctly)
* Flip the image horizontally (for some reason, the plotter is printing it backwards)
* Select 'save as', then 'HP Graphics Language'.
* Open this file in a text editor, and copy the text
* Paste the file into your terminal program, configured as above (CoolTerm in OS/X or Minicom in Linux)
* Enjoy your plot!
Example:
[[http://www.flickr.com/photos/cibomahto/5764101196/ Plotted Noisebridge Logo]]
[[HPGL for NoiseBridge Logo]]
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