One other thing I've just realised: The IC is a surface mount device Usually the module is designed for the tracks to be on the COMPONENT side of the PCB. If you intend to produce the PCB in the conventional way with the components on the top, and the tracks on the other side, then you may have a problem. Check the orientation of the IC very carefully, as you will need to fit it to the underside (copper) side of the PCB, and that will usually mean that you have to flip the module.
Andy On Sat, 28 Aug 2010 01:10:59 +0200 Fabio Varesano <fabio.vares...@gmail.com> wrote: > Hi Andy, thanks for having a look at this. Please read below.. > > On 08/27/2010 11:38 PM, Andy Eskelson wrote: > > > > > > > > Personally I don't like lots of filled zones unless that really are > > necessary, but that's a fairly minor point. > > Well, I read that this is good practice as this make less use of > etchant during the etching process. Isn't that true? > > > several other points: > > > > Do try to put your connection pins on the edge of the board. It makes > > wiring up much easier. You could also consider some form of connector. > > Yep, that's the best I've been able to come out with.. I do know that > it will be painful to plug this. Do you have any suggestion for a 6 > pin connector? Somehow I didn't find something suitable in the library. > > > > > How are you going to mount the board? Some hardware mounting holes > > might be useful. > > Yep, good point. How do you draw mounting holes with kicad? > > > > > The tracks to the pins look rather thin. Thin tracks tend to lift when > > soldering, also a small speck of dust on the film can cause a > > break in the track. Using a thicker track will help in both cases. > > You mean the tracks to the accelerometer IC? Well, they quite match > the IC pins size. I don't think I could have made them bigger. Maybe > you are suggesting making them thin below the IC and bigger on the > rest of the board? > > > > > On single sided boards, don't be afraid to use a few links it makes life > > MUCH easier. > > > > An Easy way to do this is to treat the board as double sided, and use the > > top tracks as wire links. Beef up the vias to a suitable size to take your > > wire links. Obviously you need to manually route this. > > > > I understand. So you are using wires as bridges to pass over one or > more track, right? Interesting.. > > > Thanks for your suggestions. Really helpful. You rock! > > FV > > > ------------------------------------ > > Please read the Kicad FAQ in the group files section before posting your > question. > Please post your bug reports here. They will be picked up by the creator of > Kicad. > Please visit http://www.kicadlib.org for details of how to contribute your > symbols/modules to the kicad library. > For building Kicad from source and other development questions visit the > kicad-devel group at http://groups.yahoo.com/group/kicad-develYahoo! Groups > Links > > >
