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author | Rob Austein <sra@hactrn.net> | 2020-09-13 23:04:30 +0000 |
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committer | Rob Austein <sra@hactrn.net> | 2020-09-13 23:04:30 +0000 |
commit | b092ffbcbe2c9398494f7dc9db6f0796971633e0 (patch) | |
tree | 6fabf690f1ebf485a9fea9af5298e44ad2a59a3e /raw-wiki-dump/GitRepositories%2Fuser%2Fft%2Falpha_to_kicad | |
parent | 9d927e49d9c10fc16c6dfa4a2a96cdb6216e4e2b (diff) |
Import Cryptech wiki dump
Diffstat (limited to 'raw-wiki-dump/GitRepositories%2Fuser%2Fft%2Falpha_to_kicad')
-rw-r--r-- | raw-wiki-dump/GitRepositories%2Fuser%2Fft%2Falpha_to_kicad | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/raw-wiki-dump/GitRepositories%2Fuser%2Fft%2Falpha_to_kicad b/raw-wiki-dump/GitRepositories%2Fuser%2Fft%2Falpha_to_kicad new file mode 100644 index 0000000..4998430 --- /dev/null +++ b/raw-wiki-dump/GitRepositories%2Fuser%2Fft%2Falpha_to_kicad @@ -0,0 +1,71 @@ +{{{ +#!htmlcomment + +This page is maintained automatically by a script. Don't modify this page by hand, +your changes will just be overwritten the next time the script runs. Talk to your +Friendly Neighborhood Repository Maintainer if you need to change something here. + +}}} + +{{{ +#!html +<p>Work-in-progress repository with output of altium2kicad conversion +of the Cryptech Alpha rev03 board.</p> + +<p>The conversion was done using 'convert.sh', with the Altium Designer +project files from</p> + +<p>https://wiki.cryptech.is/browser/hardware/cad/rev03</p> + +<p>and the altium2kicad project from</p> + +<p>https://github.com/thesourcerer8/altium2kicad</p> + +<h2>Current status</h2> + +<p>NOTE: The latest stable KiCAD version as of this writing is 4.0.7 - it does +NOT include necessary support for stitching vias. Install KiCAD nightly build +to work with the Cryptech Alpha PCB.</p> + +<p>The schematics are mostly converted. A few components do not connect with their +nets (e.g. C9 and C10 on sheet rev02_01), but maybe a manual overhaul will be +needed anyways at the end of conversion. A bigger issue is that no components +get footprints associated with them in the schema, so generating a new netlist +won't work at all. The footprints exists in some form in the PCB, so we only +need to figure out how to reference them properly in the schema.</p> + +<p>All the copper layers convert reasonably well. The challenges are mostly +around filled polygons on the various layers. A python script (fix-pcb.py) +modifies parameters to get a fairly close result.</p> + +<p>I'm currently looking into ensuring the drill hole sizes are right, and the +non-copper layers have been largely ignored this far.</p> + +<h2>Issues</h2> + +<p>Two layers (Altium Gerber files CrypTech.G1 and CrypTech.G2) have fills +that I have not been able to reproduce. I targeted not missing any copper, +accepting that the KiCAD gerber fills reach more places, so add some copper +on those layers.</p> + +<p>Drill hole sizes have not been checked. KiCAD seems to add ~0.85 mil more +clearance around vias. This needs to be double checked but I'm hoping that +we can just tolerate that.</p> + +<p>Importing WRL files (3D models) required some hacking of the altium2kicad +tool that I haven't been able to work on upstreaming yet. Something is still +not right here, but the board does have a fair amount of component (including +the more special ones) in KiCAD 3D view.</p> + +<p>Another hack that has not been upstreamed is loading more of the source +files, IIRC to get all component footprints properly converted.</p> + +<p>The KiCAD board does not pass DRC checks yet. I believe part of this is +because design rule settings aren't (fully?) imported from Altium. Need +to figure out the settings used for this project, and fix all drill sizes +I think.</p> +}}} + +[[RepositoryIndex(format=table,glob=user/ft/alpha_to_kicad)]] + +|| Clone `https://git.cryptech.is/user/ft/alpha_to_kicad.git` || |