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Registered Member #135
Joined: Sat Feb 11 2006, 12:06AM
Location: Anywhere is fine
Posts: 1735
I guess then I'm going to turn all the markings back on and see if it will work that way, then turn them all off so I can print on a transparnecy,
****************
If you turn off alignment features from the display/hide menu you won't be able to move things around. I just learned that the hard way. So I'm gonna keep them on until I need to print.
Registered Member #205
Joined: Sat Feb 18 2006, 11:59AM
Location: Skørping, Denmark
Posts: 741
I`ve just made a PCB for the voltage probe in the CCPS,
so here is how I make a ground plane. The method is like Steve said, But here is the missing info: In schematics, there is a button with ABC and a trace. It`s called "Label" if you run the cursor over it. Press this button, and move the cursor over to the wire in the schematic that you want to represent the copper fill. Click it, and you will be told what this wire, or net, is called. The form is "N$xx" Let`s say you want to create a copper fill that covers the net "N$12"
In "board" you write in the input line: polygon N$12 (CR) Then draw the polygon, corner by corner until it is closed, either by double clicking, or by ending where you started.
Then press Ratsnest, and the copper fill is computed and displayed. Hope this helped some some....
Registered Member #135
Joined: Sat Feb 11 2006, 12:06AM
Location: Anywhere is fine
Posts: 1735
My next question would be how would I copy the one layout and paste a duplicate next to it? Sometimes I want to etch more then one "cell" at a time, so it would be helpful.
I got around this problem for now by printing my artwork out, rotating the page and printing again, but i'm going to have a lot of wasted space on the board. I know it's going to take some time, but that's okay.
I've been etching boards the traditional way for the most part for 7 years, and its time to get a little more serious about the precision, it's a lot less work too.
Although not exactly straightforward the group/cut paste option will work although you need to be careful as you will be working with only the sch and brd independently and there is a good chance of some inconsistencies creeping in.
Basically the process involves opening one board, group/cut then close the source design and open the brd that will be the target file and paste. Repeat with other files as appropriate.
Doing the same for multiple sheet schematics can be laborious.
When doing this I also generally renumber the components to close any gaps in the sequence, this can help maintain consistency or at least avoid huge inconsistencies:-). Problems can also be encountered with net name consistency as well, and I've went as far as renaming all nets to get around this issue when I had to combine two large designs. See the file merge_brds in the download area for some details of this process.
cheers
David .................................................
................................................
You can use a ULP for this (e.g., panelize.ulp) to merge within Eagle or panelize the Gerber files themselves using GerbMerge:
Registered Member #30
Joined: Fri Feb 03 2006, 10:52AM
Location: Glasgow, Scotland
Posts: 6706
Copying and pasting duplicate pieces of circuit in Eagle is difficult and messy. I always managed to avoid it in the 4 years I spent using Eagle in my day job.
Eagle started out on Linux or Mac or something, and was ported to Windows quite late on. So it doesn't use the standard Windows metaphors for cutting, copying, pasting and deleting. You just have to RTFM and get used to it.
Cadsoft did try changing to more Windows-like keyboard shortcuts a couple of years ago, but there was such an outcry from existing users who were used to the wacky behaviour, that they had to put it back the way it was.
Registered Member #538
Joined: Sun Feb 18 2007, 08:33PM
Location: Finland
Posts: 181
I have a couple of quick questions about eagle too:
Can I hide groundfills in any other way than closing the file and opening it again?
How can I make the connections to a pad wider when it connects to the groundfill? Currently they are very small. I think the idea is that I draw the ground connections first (which work as the wider connections to the groundfill) and after add the groundfill but some of the pads dont have any connections on either one of the layers (both layers have a groundfill) and I wouldnt mind if they would be properly connected to both of the groundfills.
Can I somehow connect a pad to the groundfill without making a wire between them? I have pads for bolts on the corners of the pcb that should connect to both of the groundfills.
Registered Member #63
Joined: Thu Feb 09 2006, 06:18AM
Location:
Posts: 1425
Steve Conner wrote ...
Copying and pasting duplicate pieces of circuit in Eagle is difficult and messy. I always managed to avoid it in the 4 years I spent using Eagle in my day job.
It's not that bad for making just a PCB... until you actually want the duplicate's tracks to connect properly to the original's pads / validate the schematic... in which case it's difficult, awful, and messy
0. Try to mentally disconnect the connotations or meanings of the images on the icons, and the process of actually clicking them for an expected outcome. 1. Group the objects with the "dashed-line square" tool. 2. Copy the objects with the "scissors" tool. 3. Paste new objects with the "shiny yellow torchlight" thing.
It helps if you assign these to keycombinations as well.
Registered Member #30
Joined: Fri Feb 03 2006, 10:52AM
Location: Glasgow, Scotland
Posts: 6706
Dago,
I don't understand what your first question means. Polygons are unfilled until you use the ratsnest command to calculate them. It's normal to work on the board with them displayed in their filled form.
About your second and third questions: if you assign a pad to the same net as the groundfill, then it will connect itself up automatically if it's sitting on the groundfill. The width of tracks that it uses to do this is determined by the "Thermal relief" setting in the design rule checker, or something. (Yes, the settings in the DRC affect how the board is drawn.)
Registered Member #538
Joined: Sun Feb 18 2007, 08:33PM
Location: Finland
Posts: 181
Steve Conner wrote ...
Dago,
I don't understand what your first question means. Polygons are unfilled until you use the ratsnest command to calculate them. It's normal to work on the board with them displayed in their filled form.
About your second and third questions: if you assign a pad to the same net as the groundfill, then it will connect itself up automatically if it's sitting on the groundfill. The width of tracks that it uses to do this is determined by the "Thermal relief" setting in the design rule checker, or something. (Yes, the settings in the DRC affect how the board is drawn.)
With my first question I mean if I want to change the ground traces, its alot easier if I can actually see the ground traces. If I want to use the ratsnest command and fill the polygon and see how the groundfill fits on the board and after that want to change something, then I have to open the file again to get the polygon unfilled. Its not a major problem anyway.
I can find a setting for changing the clearance for the thermal relief but I havent found a setting that adjusts the width of the traces connecting to the pad in a thermal relief.
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quick questions on eagle
