On Fri, 2009-07-24 at 09:37 -0500, Bill Gatliff wrote: > > http://www.delorie.com/pcb/docs/gs/ > > > > In 4.3 SMT Blinker, the third paragraph is talking about organizing the > board's layer groups. But you haven't talked about that yet so I'm > completely lost as a reader. > > Just an editorial criticism. So far, the document is pretty nice. > > > b.g. >
For a novice it may be wise to read that fine tutorial from the begining -- I did that and I think that most important points are explained well, this includes layer groups. (I have to admit that layer grouping was difficult to understand for me when I started with PCB long time ago.) This is above section 4.3, including a picture: drawing layer While designing your circuit board, pcb provides a number of layers to draw on. While it's convenient to think of each drawing layer as corresponding to one of the physical layers (copper, silk, etc), it's possible to group multiple drawing layers together into one physical layer, or assign drawing layers to purposes not corresponding to physical layers. For example, you could have two drawing layers corresponding to your ground plane copper layer, one for the ground plane itself and a second (differently colored) one for any signals that need to be routed on the ground plane layer. We will next set up our layers, which define how many copper layers we'll have and what they'll be called. Select the Layers preferences. You'll see three tabs along the top; click on the Groups tab to show the layer group preferences. For this project, all we want to do is make sure that the solder layer is on the solder side, and the component layer is on the component side. Click in the boxes to make “component” and “component side” in group 1, and “solder” and “solder side” in group 2, then click on OK: _______________________________________________ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user