We need to also change our Z axis options to reflect our bit that we wish to use for the cutting out our PCB board.
For this exercise with our mach3 machine we are going to use these values:
Then we need to adjust the values for our cutting bit.
We need first change from inches to millimeters we do this by going to the Machine tab then clicking on millimeters.
You will now get the setup page of our PCB-GCode.
You will get a screen like below, go ahead and click Yes.
So we select our GCode style from the options listed, and then click Accept.
Eagle pcb gcode bottom driver#
For this tutorial we are using the Mach3 option as this is the CNC driver package we have for our machine.
You will see this screen if you are setting it up for the first time.
Now we want to open our folder and click pcb-gcode-setup.ulp file.
Now you want to navigate to where you unzipped your PCB-GCode folder.
We then navigate to our folder where we up the PCB-GCode files and look for the one called pcb-gcode-setup.ulp.
The way we do this is to first click on the Run ULP button on the toolbar above our circuit design. Once the DRC comes up clear we can move on to our next step.
Be sure to run the DRC and check for errors and adjust as needed.
Next you just use autorouter again to rewire your circuit with the bigger leads.
In which case you just need to adjust your circuit or you can have all of the wiring taken off using the Ripup command, followed by the stoplight button.
You may get a list of errors like this:.
Next you click “Check” to see what parts of your board are too close together.
For this project we adjusted them to 30mil. Then change the size of the traces as big as you think you need.
You also may want wider traces you can accomplish this while we are in the DRC, click on the “Sizes" tab.
Next we need to change all of the options to 15mil as this setting seems to work well with the tip we are using for our CNC machine so we set this as our clearing width.
We do this by pressing the DRC button on the side panel.
We are going to need to use EAGLE to enforce design limitations.