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Techmannih - Screenshotfrom2026-06-1217-10-57.p...

we have a cad model issue for footprint="kicad:..." The imported CAD model is much larger than the footprint landed pads. Are all CAD models showing up as white !!! CC mention . This seems like a big regression KiCad models may need to be converted to mm they may be in inches bec

Started by techmannihJun 12, 202633 messages

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Last active 20 days ago · plain text
techmannih
we have a cad model issue for footprint="kicad:..."
techmannih
The imported CAD model is much larger than the footprint landed pads.
techmannih
Are all CAD models showing up as white
Seve
!!!
Seve
CC <@398467566588264449> . This seems like a big regression
Seve
KiCad models may need to be converted to mm- they may be in inches because the resize factor looks like 2.56x or something
techmannih
in which repo i need to add the repro for this
techmannih
I have tested it in core, and it works well there.
image.pngimage.png
Seve
Hmm not sure this is strange, try eval
techmannih
yep gets a regression in the eval
image.pngimage.png
techmannih
The bug in eval was that the KiCad loader incorrectly applied a (modelUnitToMmScale) 2.54x scale to the STEP CAD model,
Seve
Nice find lets add a regression test
techmannih
yea on it
techmannih
Can you check it https://github.com/tscircuit/eval/pull/2905
techmannih
<@757706909351411845> <@398467566588264449> I have fixed the scaling issue, now we have the position offset issue for pinrow/pinheader for kicad cad models
image.pngimage.png
Abse
maybe check if the cad model pos relative to the pin1 or the center of the fp
techmannih
<@398467566588264449> I found the issue in circuit-json-to-gltf: when center_of_component_on_board_surface is used, the CAD model origin is inferred incorrectly.
techmannih
getMeshOrigin() returns { x: 0, y: 0, z: 0 } directly when no explicit model_origin_position is provided
techmannih
Can you take a look https://github.com/tscircuit/circuit-json-to-gltf/pull/166
techmannih
<@398467566588264449> can you take a look https://github.com/tscircuit/circuit-json-to-gltf/pull/167
Seve
<@398467566588264449>
Abse
hey u back home ?
Abse
I think it lg , can u double check when u have free time
Seve
Im back!!!!
techmannih
Wow welcome back!!! after 2 weeks 🫡
techmannih
<@398467566588264449> the kicad library cad model are white bcoz the 3d-viewer STEP pipeline was ignoring brep_faces color data from occt-import-js and collapsing the STEP mesh into a single material.
techmannih
can you take a look https://github.com/tscircuit/3d-viewer/pull/943
techmannih
<@757706909351411845> <@398467566588264449> https://github.com/tscircuit/3d-viewer/pull/945
Abse
can u give me the repro link in the preview
techmannih
Ohh sorry
techmannih
Updated
Abse
nice work

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