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'''Working with the HP 7475A''' | ==='''Working with the HP 7475A'''=== | ||
The plotter is placed in room 204, in the shelf behind the projection screen. Take it out, place it on a desk and connect the serial adapter to your computer. Please do not forget to return it to the shelf when you are done! | The plotter is placed in room 204, in the shelf behind the projection screen. Take it out, place it on a desk and connect the serial adapter to your computer. Please do not forget to return it to the shelf when you are done! | ||
You have to bring your own pens and paper. So far it seems that some trial and error is involved when working with the HP7475A. | You have to bring your own pens and paper. So far it seems that some trial and error is involved when working with the HP7475A. | ||
'''Working Times''' | ==='''Working Times'''=== there is no class currently held in the room. <br> | ||
[https://www.uni-weimar.de/qisserver/rds?state=wplan&act=Raum&pool=Raum&show=plan&P.subc=plan&raum.rgid=2847 Current Class Schedule in M7 Room 204] | [https://www.uni-weimar.de/qisserver/rds?state=wplan&act=Raum&pool=Raum&show=plan&P.subc=plan&raum.rgid=2847 Current Class Schedule in M7 Room 204] | ||
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'''Paper Setup''' | ==='''Paper Setup'''=== | ||
The HP7475A either takes A4 or A3 paper. The thickness of the paper is very flexible. | The HP7475A either takes A4 or A3 paper. The thickness of the paper is very flexible. | ||
'''Pen Setup''' | ==='''Pen Setup'''=== | ||
To use your own pens with the plotter, you can simply extend your pen’s diameter, by wrapping some paper around it. This way it will fit the pen mount of the plotter. A better way would be to 3D print adaptors, that exactly fit the original HP pen measurements:<br> | To use your own pens with the plotter, you can simply extend your pen’s diameter, by wrapping some paper around it. This way it will fit the pen mount of the plotter. A better way would be to 3D print adaptors, that exactly fit the original HP pen measurements:<br> | ||
[https://softsolder.com/2015/04/21/hp-7475a-plotter-oem-pen-body-model/ Original HP pen measurements and openSCAD code] | [https://softsolder.com/2015/04/21/hp-7475a-plotter-oem-pen-body-model/ Original HP pen measurements and openSCAD code] | ||
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'''Serial Connection''' | ==='''Serial Connection'''=== | ||
You need to find out the COM port, as which the USB/Serial adaptor was registered in your computer. In Windows, you can find out in the Device Manager, in Mac OS, I don’t know yet. | You need to find out the COM port, as which the USB/Serial adaptor was registered in your computer. In Windows, you can find out in the Device Manager, in Mac OS, I don’t know yet. | ||
'''HPGL''' | ==='''HPGL'''=== | ||
The plotter only understands HPGL (Hewlett Packard Graphics Language). You can try the “HP7475A_live_input” sketch, to test some HPGL commands. You can find documentation about that language here: <br> | The plotter only understands HPGL (Hewlett Packard Graphics Language). You can try the “HP7475A_live_input” sketch, to test some HPGL commands. You can find documentation about that language here: <br> | ||
[https://www.isoplotec.co.jp/HPGL/eHPGL.htm Simple but incomplete reference]<br> | [https://www.isoplotec.co.jp/HPGL/eHPGL.htm Simple but incomplete reference]<br> | ||
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'''How to install the HPGL library in Processing:''' | ==='''How to install the HPGL library in Processing:'''=== | ||
Sketch → Import Library… → Add Library… → search for: HPGLGraphics | Sketch → Import Library… → Add Library… → search for: HPGLGraphics | ||
→ Install → restart Processing | → Install → restart Processing | ||
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'''How to use the library | ==='''How to use the HPGLGraphics library in a Processing sketch?'''=== | ||
import hpglgraphics.*; | import hpglgraphics.*; | ||
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'''How to send a HPGL file to the plotter?''' | ==='''How to send a HPGL file to the plotter?'''=== | ||
Use the “HP7475A_feed_hpgl_file_01” or “HP7475A_feed_hpgl_file_02” sketches, which are almost the same (only the buffer handling works differently). Both do not work perfect yet for each case, but almost. For very detailed graphics (for example the “noise.hpgl” file), version 02 works better. Instructions how to use the programs are in the comments | Use the “HP7475A_feed_hpgl_file_01” or “HP7475A_feed_hpgl_file_02” sketches, which are almost the same (only the buffer handling works differently). Both do not work perfect yet for each case, but almost. For very detailed graphics (for example the “noise.hpgl” file), version 02 works better. Instructions how to use the programs are in the comments | ||