Hello everyone, so far, you have seen how we can create a single center as well as a double sided PCB using Eagle. So we can place the components and we can route those tracks. But there is one important thing missing so far from our discussion and let's do it now. That is how we can add the ground plane of the copper pool onto the PCB, which you see something like this. So apart from tracks, the most important thing that makes her physically look beautiful and prone to a lot of different types of noises is this extra copper poor generally a copper port like this is added and connected to the ground edge. Let's see how we can add this copper pole using Eagle.

So this extra copper is there to reduce the noise and keep the operations smooth on the PCB and most of the times It also added there to increase the looks or beautification of the PCB. It's a very solid region made up of copper, which is left from eating. Now how to add it, let's see, a PCB or a design without copper poor will look like this. It's a double sided one, but with copper, it will look something like this. And that's what we're going to do. So let's see how we can do this in our schematic.

So this is a microcontroller based board that we had designed before. And to introduce or to add the copper poor on today's you need to be aware of tools or you need to know are in it you need these two tools called polygon and rat's nest. Let's see help. So the very first thing to do is hear either you type polygon or you can take it from here. Once you take the polygon, select where you want to put the copper layer, either it is a top, bottom layer or on the top layer. So let's choose bottom layer.

Then along the bottom layer, you can also decide the spacing or the isolation. So this is the distance of isolation. Let's keep it zero for now. And then you can just start, select the turn, and then just start drawing it. So just added like this. You just have to click it once and there is a line that you just draw and finish.

Once you've finished join the polygon, you have to give a signal name to it. It's just like adding names Some levels so just blankly type GNP or ground here and your copper poor is here. Now, you will also tell me that the copper port is not seen I want to see the very nice looking blue area or the copper area. So for that sake what it is you need to hit this tool called rat's nest. So, just click on here or I can type it whoops rat's nest and you can see the interest, but you can also see that we have done it with very little clearance. So, it is very close to the tracks and almost entire PCB is filled with this copper except this much.

So, for that what we need to do is we need to increase this isolation So, better is to control sets then choose a polygon. Now let's draw it again like before. Yeah, but before drawing shows this this English town already this English we experimented with grant and the blacklist contains an invalid polygon because there is some mistake here. I will delete it with controls set and I will read right. So that's what you have to experiment with. Got a polygon.

And let's let's draw it here. Because my spacing appears to be too big. It might not get it so I'm just choosing it here. Then hit rat's nest latency. The spacing is a bitch good now and it don't go inside the icy holes. If you are using a double sided PCB, do it for both the sides stop as well as the bottom side remember toodles polygon rat's nest.

Thanks for watching.