Hopefully the answer is not, "if you don't know this stop making PCBs"
I am making a simple EEC-IV to engine/trans controller adapter. I was working on one that would use the non-cased Microsquirt, but I also wanted to make a simple pass through. So this board connects the EEC-IV plug to two DB-25 connectors. One for engine and one for trans, pic below. Anyway I was thinking about the trace widths for the PCB, but I do not know any of the Ford EEC specs. Default trace width is 10mil and power/ground are 75. Am I over thinking this or should those widths be good?
Here it is test fitted in an EEC case.
Another PCB Question
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Another PCB Question
1995 Ford Lightning. Dart based 427 Windsor, Novi 2000, full sequential, E-85, etc. MS3X/v3.57
http://www.buildpics.org/
http://www.buildpics.org/
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Re: Another PCB Question
Those traces look very small - generally make them as large as reasonable unless you have a good reason otherwise or they are very low current.
By "non cased Microsquirt" do you mean the "Microsquirt module" ?
James
By "non cased Microsquirt" do you mean the "Microsquirt module" ?
James
I can repair or upgrade Megasquirts in UK. http://www.jamesmurrayengineering.co.uk
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My Success story: http://www.msextra.com/forums/viewtopic ... 04&t=34277
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New users, please read the "Forum Help Page".
Re: Another PCB Question
I'll make them larger James, thank you. Yes, Microsquirt module, I believe it's the v2.2 board here http://www.diyautotune.com/catalog/micr ... p-381.html
1995 Ford Lightning. Dart based 427 Windsor, Novi 2000, full sequential, E-85, etc. MS3X/v3.57
http://www.buildpics.org/
http://www.buildpics.org/
Re: Another PCB Question
+1 to James' comments. Logic traces are generally down in the .010" range; don't make them smaller unless you need to, as you can run into damaged traces from the manufacturing process. There's a reason the board companies charge extra for teeny traces. Power traces are as big as you've got room for; I like planes and polygons where possible, even (or is that especially!) with 2-layer boards.
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Re: Another PCB Question
Everything except 12v and ground are 10 mil, 12v and ground are 75 mil. I'll change to 20 mil and 75 mil. Does that sound good? I cannot make too large of a trace due to the pin spacing for the EEC-IV connector.
1995 Ford Lightning. Dart based 427 Windsor, Novi 2000, full sequential, E-85, etc. MS3X/v3.57
http://www.buildpics.org/
http://www.buildpics.org/
Re: Another PCB Question
Here is the board with a 25mil default trace. I fibbed earlier the power and ground are 50 mil traces.
1995 Ford Lightning. Dart based 427 Windsor, Novi 2000, full sequential, E-85, etc. MS3X/v3.57
http://www.buildpics.org/
http://www.buildpics.org/