Fails to find a solution on more complex PCBs

[colemarkham]

It seems to be getting stuck in a loop trying to find a solution. It doesn't make it very far. I think it's the fanout on the MCU causing the problem. If you want to take a look, here's the DSN: https://gist.github.com/colemarkham/fe70412b61bdc881e9acd93584751589

[vygr]

Thanks. The more test DSN’s the better! Regards Chris —————- Chris Hinsley

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On 21 Mar 2018, at 8:18 pm, Cole Markham ***@***.***> wrote: It seems to be getting stuck in a loop trying to find a solution. It doesn't make it very far. I think it's the fanout on the MCU causing the problem. If you want to take a look, here's the DSN: https://gist.github.com/colemarkham/fe70412b61bdc881e9acd93584751589 — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub, or mute the thread.

[vygr]

Running it through my C-PCB prog with these options:

./dsn2pcb BigSeries.dsn | ./pcb --v 1 --z 8 --q 10 --r 2 | ./view

Routed in about 5 seconds. I'll try the JS-PCB with grid resolution of 2.

[vygr]

May I include the dsn file in my test cases please ? I'll rename it to test6.dsn, but it would be nice to include it in the project if your ok with that.

Regards

Chris

[vygr]

Javascript version completes ok if you up the grid res to 2. With fiddly tracks and small track gaps it sometimes needs a finer grid to work with.

Regards

Chris

ps. love to use it as an included test file ?

[colemarkham]

Sure, you can include it in the test files.

[colemarkham]

Looking at the visualization, it doesn't appear to take the layer into account for surface mount pads.

[vygr]

Nice run with only 6 vias for you.

./dsn2pcb BigSeries.dsn | ./pcb --v 1 --r 2 --q 8 --z 64 | ./view

Chris

[vygr]

Also, you will notice that the surface MCU pad stack goes to the back ! That's something I need to work on as I assume that the padstack covers all layers. Clearly surface mounts don't need that or want that, so I'd like to use this file to push my parser forward.

Thanks for sharing.

Chris

[vygr]

Missed your reply :) But yeah, surface mounts need some extra parse work on my part.

Chris

[vygr]

I'll leave this issue open till I fix the surface mount issue. Might be a while...but I'll get round to it. :)

[vygr]

Lost of work on C-PCB Cole. Still not how I want to deal with SMD's but losts better.

Chris

[vygr]

Will eventually port over to JS-PCB, but C-PCB is where I test out new things.

Regards

Chris

[vygr]

Got that from a run with the latest C-PCB version and this:

./c_pcb_dsn test6.dsn | ./c_pcb --v 1 --r 2 --z 128 | ./c_pcb_view --s 12

Chris