KiCAD to OpenEMS (PCB export) about pcbmodelgen HOT 8 CLOSED

Hi

1. Could you please provide Meander_2_4G.json if it is not confidential?
2. Could you test if examples work for you?

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Hi Janis,

Sorry for the late reply as i haven't worked for the last 2 days.

1. Could you please provide Meander_2_4G.json if it is not confidential?

Just for checking, I have attempted to take your example pcbmodel.json as it is and simulation_script.m, replaced only the pcb files running using makefile without changing any params and "make run".

Now, kicad_pcb_mode.m and kicad_pcb_mesh.m is generated with mesh gap / ration ERROR messages as attached in the error_log. Attaching here the complete file in .zip.

The Meander_2_4G.json looks to be corrupted as "cat Meander_2_4G.json" showed some invalid ASCII characters at the start of the file.

At this point I am not doing any confidential work and with this attempt would like to publish as part of your example folder/openems as reference for people interested in meanderf_24_g simulation.

2. Could you test if examples work for you?

Yes the examples are working fine in my environment.
Also,
As part of the kicad_pcb_mode.m generated now using your example .json and makefile, 'hole_fill' property is generated but this property doesn't exist now.

simulation_script

openEMS FDTD startup
Using Octave script files
error: the type for the property "hole_fill" cannot be found
error: called from
Add2Property at line 12 column 5
AddLinPoly at line 41 column 5
kicad_pcb_model at line 23 column 5
simulation_script at line 68 column 5

Thanks,
Mohan

meander_24g_1.tar.gz
error_log.txt

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Hi,

I think I've found the root cause of this problem. In both sample projects "hole_fill" is set up in the .json file. Also in both projects no "hole_fill" is required for simulation. Therefore both work perfectly. However, in both example simulation_script.m, this material is defined as 'drill_fill' instead.
It must be credited, that there is a warning message as well. Still I think it would be better to correct this detail for avoiding further confusion.

drillhole.pdf

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Hi,

Ok. Thanks.

Will try this solution and get back.

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I have the same exact problem running the examples. I'm missing something about the .json files. Apparently one must generate the .json file? Could someone kindly tell me how to do that?
thanks in advance,
Phil

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My bad. Sorry, a search of the examples e.g. pcbmodelgen-master/examples/branch_line_coupler folder showed it contains the
pcbmodelgen.json file I apparently needed. Apparently, I still needed to add a mesh. Perhaps I need to edit the .json file for my application too. Looking in how to do that.
Thanks, Phil

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Also, I noticed that only the metal polygons in the *.pcb kicad pcb file are not translated, but only the objects drawn using "Route single track". Is there a way to translate all the metal polygons to the *.m file?
Thanks,
Phil

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@montanaviking you need to create configuration json file for your project (you can use example files as starting point). Also normally I would expect there to be all metal geometry.

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