All right, welcome back .It’s been a while for me ,I’ve been busy working on a few other things and I haven’t had time to get back and do this video. but today we’re going to over creating Gerber files.
I’m going to use this board that we’ve created .we’re working on another project. this is a controller for somebody else and it’s just a good example I guess so I’m going to come up here to file what’s your boards done. you want to create files that’s what you need to send off to the board houses to have your board manufactured.
go into file then go to cam processor and it will bring up this window except this will actually be blank and this is what you’ll see .
So in Eagle it has sections. each one is represented by a tab, right now We only have one section and as many sections as you want create a job and so in Gerber file there are multiple files there’s your copper files ,your silkscreen files, your solder mask files,.Your drill file, and so we need to create a file for each one of those .
An easy way to do that in Eagle is by using a section for each one so we’re going to call this section a component section.
this naming comes from kind of just a naming convention that’s continued on from back in the day when boards had components on one side they were soldered on the other.
so your components IDs you’re, your top side of your board and your layer or your solder layer is you’re your back side of your board
so we’ll call this one "component" and to make it as generic as possible. give you the file name first.
you can go in to Eagle's help and look up these variables to have dynamic file names I’m going say percent P that gives you the path of your board file.
but in slash go to a subdirectory called Gerber’s, you need to create that ego won’t create it for you .
Let me go % end that will give you the name of your file without the dot BRD on it.
then say dot cmp for component .
for device the board houses that I have dealt with in that I’ve looked up all use Gerber RS274 X style files
we’re going to compute a layer deselect all and for this component side we want the top without the pads and we want the vias and that’s what our top copper layer consists on.
so we’re going go ahead and say add it’s going to bring up another tab just going to duplicate whatever you had there.
we’re going to call this one solder same device just that the file extension for this one is Sol as well
it’s to the top we have the bottom now the pads and V is stay in both because the copper for the pads and the vias needs to be on both the top and bottom layers.
so we click on add go to the next one this one we’re going to do our silk screen .
so I’m going to call it top silk or we could say complements silk.
go ahead and stay with the naming convention and we’re going to call this one dot PLC
for this one though we’re going to go with dimension Tplace and Tname
one thing about the names is they all need to be in vector fonts if you have any of the other style of fonts then it’ll convert them to vector and sometimes they’ll stretch them out or skew them and it’ll end up looking a little funny .
so if you just make sure all your fonts are in vectors then you ‘ll be okay .
Bottom Silksceen Layer or Solder Silkscreen
We ‘re going to go to the next one I call this the solder silk. and it’s called pls instead B place an B name .
we still want to mention we just want B place B names but I’d say add and
next we ‘re going to go to our stop masks so we ‘re going to call this component stop and now we don’t want any of these we just want t stop and this one is actually STC for complement stop go to our solder stop again these layers create the stop masks or your solder masks make it easier to solder call we’re going take B stop on this one
NC drill files
and finally for two layer boards this is really all you need .It’s your drill files and this you actually need o select Exelon is your device some places use a binary format of some sort it’s a little old and so you probably won’t run into that but just be aware of that you need to make sure you’re using the correct devices and I call this NC d 4 NC drill file.
convert gerber files
for this we just want the drills and the holes and there you go so you can come up here and you can file save job call it generic or standard or whatever you want to call.
it apparently I already made that one and now you can come in and any board that you create you can just load this job back up create the Gerber’s directory and whatever directory you’re using and just come down here and click process job .
I already created the Gerber’s directory at a time so there we go now it’s created our Gerber files so then what we do you want to have a Geber viewer and this is you know made even more important by five point one if you did’t notice all the Pop-ups that would pop up in 5.1 there were some problems with the cam processor and we noticed that in this board in particular or one of its revisions .
so if we go to where we save the files I’m here to Eagle fire pit servers selct them all it’ll know which ones and cares about it open and it’ll give you your Gerber files.
PCB houses manufacturing your board
The way that the board house is going to see him
so in 5.1 we had this kind of Funny lookin arc over here not what we wanted in the board for sure but the board house would have gone ahead and routed it just like the Gerber file said because you know they don’t know what your design is supposed to be so you need to check these once you’ve created them and this Gerber viewer is pretty handy there’s a link on the website for it so if you go to WWEsee 10.com .you’ll see it.
there’s also a couple other links that I’ll probably throw up good resources .but if you come in here you can look at how your Gerber file actually turned out and what the board house will see so if we just want to look at the copper traces then we go adead and deselect the silkcreen deselect the solder masks and the drills and this is the copper you’re going to get so you’re going to have this plane over here .
we’re Ggingto have all these traced running all over the place .If you just want to look at your silkscreen come over here to your PLC and PLS there’s really not much on the backside the backside just has metal circle and the dimensions to the board and that’s really it so you dip all these files up send.Them off to your board house and they’d go ahead and fabricate your board on these files.
visit this link to see a good pcb fabrication china manufactuerer. they will manufacturing your gerber files to real pcb boards
something notices find me
just something to notice this C to the two is going to get cut in half when they go to put silkscreen down you might not even get the two at all you might just get to see just because you know it depends om how close to the edge they can get not all bpard houses will go clear to the edge .
so that’s about it if you have any question go ahead go to WWE see you want t comment leave a comment on this post or email me chris at ECE 101.com and let me know if you have any question for further topics in the future I want to be going over a few thing that I’ve touched on in previous posts but that deserve a little bit more attention and a little bit more time on explaining them and really understanding what’s going on there .