There is only one clearance value because that is all that is needed when manual routing one trace at a time. Then I change the value and run DRC check multiple times to see my clearances for the whole PCB. Standard (min.) values for the clearance are determined by your PCB manufacturer so you should check there. M.
On Fri, May 22, 2009 at 10:44 AM , Julien Bayle wrote: > I'm using freerouting.net > I thought there was a lot of parameter for the clearance.. only one > (isolation clearance). > so OK, I found it already [?] > > are there standard values for the clearance used in low voltage/low > current > pcb ?? > > in kicad, sometimes, autorouting doesn't work... > I'll reinstall it. > > but freerouting.net java does the trick > > thanks again. > > 2009/5/22 kajdas <[email protected]> > >> >> >> The DRC Control dialog (PCB Design Rules Check) is the 16th icon on >> the >> top toolbar. >> There you specify you clearance. >> Then you enable the DRC (top icon on the left). >> When you route, Kicad will make sure you spacings are correct. >> M. >> >> >> On Fri, May 22, 2009 at 7:53 AM , Julien Bayle wrote: >> >>> could you help me with that? >>> >>> I looked for that ... I didn't find anything in kicad.. only the drc >>> test... >>> but I don't find the rules... and how I could change and tweak them >>> :-( >>> >>> >>> Julien >>> >>> >>> 2009/5/22 kajdas <[email protected] <kajdas%40cox.net>> >>> >>>> >>>> >>>> Every router will have some kind of settings/preferences menu where >>>> you >>>> specify that. >>>> I route by hand so in Kicad, I specify it in DRC Control dialog >>>> (PCB >>>> Design >>>> Rules Check) >>>> M. >>>> >>>> >>>> On Thu, May 21, 2009 at 3:27 PM , Julien Bayle wrote: >>>> >>>> >>>> thanks a lot. >>>> where can I do that? >>>> before exporting the dsn file? inside the router? >>>> >>>> >>>> 2009/5/21 kajdas < *[email protected] <%2Akajdas%40cox.net>* < >> [email protected] <kajdas%40cox.net>>> >>>> >>>> >>>> <[email protected] <kajdas%40cox.net>> >>>> You should specify spacing required between holes/pads and traces >>>> and >>>> router will take care of the rest. >>>> M. <[email protected] <kajdas%40cox.net>> >>>> >>>> >>>> On Thu, May 21, 2009 at 2:33 PM , Julien Bayle wrote: >>>> >>>>> but I have a last question... >>>>> >>>>> I put holes in my pcb and I would like to avoid traces too much >>>>> near >>>>> from those holes... >>>>> A friend adviced me to use zones around these holes before the >>>>> autorouting. .. I did that, but probably, I have to do a special >>>>> thing >>>>> in freerouting. net... >>>>> >>>>> any ideas ?? >>>> >>
