In an High power design I need some tracks with width of 6mm, but close to the switch (P-MOS) the track has to narrow to 2mm, as otherwise it shorts.
How to do this ?
Related to this SOME ground tracks need to be also 6mm but not all, how can I do that ?
change track width during placement?
How to do that ?, in the “Designrules” I added an 6mm definition, and assigned that to the relevant nets. When I start to layout the track it is wide, but I can’t change it on the fly to narrow (or at least I don’t know how)
Disclaymer: Everything i say below is true in kicad 4.0.2 in open gl mode.
While in interactive routing mode press the left mouse button to fix everything you want in the “original” track witdth. (play around a bit, this feature is a bit unintuitive at first.)
After that press the right mouse button. In the menu that pops up there are two entries that might be of interest to you.
One is select custom track/via size which opens up another dialog where you can enter your track size.
The other is select track/via size where you can select from a list of standard options. (Everything you defined in the drc settings dialog should be in this list.)
I use kicad 4.0.6, but I assume the difference is not that big.
When I press the right button (after have pressed left), I can select “select track width” but I have only 3 “option” (Auto, track 6mm uses Netclasses, and dimensions) . When I select auto, the next time I have get the fourth option :Uses Netclass Values" but nothing changes, and no option for “original” track width
what did you add to the drc settings dialog
reachable via desing rules->design rules.
I get all the once i add in this dialog suggested when i want to change track width.
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Bingo, works perfect !!!