PCB design in EAGLE is a two-step process. First, you design your schematic, then you lay out a PCB based on that schematic. To start with the eagle. I start by making a new project folder for my design. for that, I fall these steps.
Eagle control panel>Projects tree> user project>new folder>New >Schametic.
Clicking on Scametic a new window will pop up. Project folders in Eagle are like any regular file folder system, having a file name ending with "eagle. epf".

Seting Design rule for bord.

Design Rule Check allows one to establish a set of boundaries for PCB trace widths, component spacing, diameters, etc. It’s only after I have all of these rules set up . that I can then go about completing my design process, knowing that any issue with these manufacturing-specific constraints will be flagged in Autodesk EAGLE when I run my DRC. In my case, I need to check that the endmill I am using (1/64 usually) is able to go between all the traces so the machine is able to cut successfully the board. For that, Design Rules Check is used which will check that there is enough space everywhere.

Above are some set of Design rule I set for my design specific.

PCB Routing .

I use the "route" Tool to route each trace. The wire gets turn red as I route it into place. After route wires, I use the "move" tool to move them around as lines.
There is also an autorouter feature - it is good for making a general layout, I try to use it but sometimes if the components were not properly oriented, It some time rout through the bottom or makes the design more complicated. Then after all this, I have to edit the traces manually. Especially on this circuit. to use the autorouter go to the "tools" menu in the top toolbar and select "auto".one can also call auto tool by just clicking arrow aside rout too on left bar.

Testing Design rule for bord.

For checking DRC .
I go to Toolbar >Tool >DRC>check
A small window with the list of error messages appears at the left bottom corner.

I got some Error messages from Airwire which might mine there is some kind of overlapping or improper connectivity between two tresses. I use the unrout command and re-rot all the routing where it was necessary to solve the error.

Routing the outcut border.

For making an outcut border for my PCB design. I change the layer colour to yellow (Dimension ) and use the line command to draw the out cut border pattern.
Which you can see in the below image.

At last I use the Text command to add my signature as an initiative of my name VZ on the board.

And hence the designing portion is completed. you can see my final complete image above.

Exporting a board design.

For milling my PCB in SRM-20 I know I will require a jpg image formate as I did at electronic production one for traces and one for output. For generating jpg for traces I need to hide all unnecessary layers in the PCB design.
For that, I go to the Layers menu in the top toolbar and I use the hide button for unseen all the layers and select only the top layer (traces only).

For Exporting Images in jpg formate
I go to the toolbar>Files>Export>Image. An Export Image window open.
Then Select the suitable path for saving the Image.

Values that I Modify

• Settings should be MONOCHROME
• Resolution:700 DPI - this will export an image with white traces.
• Area:Full

Then click on ok to save the Image .

Similarly, I select then export the Dimension layer for milling the outside of the board and repeat the above stape to generate a jpg image of the outside border.

• Remember: the Modela cuts out the DARK and leaves white at the default setting. you can invert it in modes if you want.

And hence the jpg export portion was completed. These are final Export jpg files of my hello world bord.

Fusion 360 PCB Designe.

I try to open the PCB design in fusion 360 for that I just click on the extreme right button on eagle where I found the path to connect the fusion software I push the eagle file then on fusion 360 cloud and open it in CAD enveromentr..

Generating Modes rml file.

This portion of generating rml file is already briefly explained by me in the Electronic production week. Please visit the week assignment page if you are interested to read more about it. For this week here I generate the rml file for milling PCB traces on SRM-20.

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This is the second outer cut file I generate in mods for cutting the border of PCB.

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PCB milling .

Soldering Hellow world bord

Programing the Hello world bord LED.

    /*
  Button

  This code is  Custom for Attiny 44 base hello world pcb  blink program for my fab academy assigment
*/

// constants won't change. They're used here to set pin numbers:
const int buttonPin = 3;     // the number of the pushbutton pin
const int ledPin =  8;      // the number of the LED pin

// variables will change:
int buttonState = 0;         // variable for reading the pushbutton status

void setup() {
  // initialize the LED pin as an output:
  pinMode(ledPin, OUTPUT);
  // initialize the pushbutton pin as an input:
  pinMode(buttonPin, INPUT);
}

void loop() {
  // read the state of the pushbutton value:
  buttonState = digitalRead(buttonPin);

  // check if the pushbutton is pressed. If it is, the buttonState is HIGH:
  if (buttonState == HIGH) {
    // turn LED on:
    digitalWrite(ledPin, HIGH);
  } else {
    // turn LED off:
    digitalWrite(ledPin, LOW);
  }
}
  

Testing Hello world bord