Making circuit boards on Camm

Step by Step

1. Decide_what_function_your_circuit_board_should_have
2. Design the circuit board or select and download a cad file from the hello-world circuits section on the http://fab.cba.mit.edu/about/fab/ or from hello world electronics
3. Get copper foil ready in the CAMM machine
4. Open Cad.py software
5. Click input and get the design file (.cad file) or a pre-designed png file.

Settings on machine

• Select Roll and press enter on machine
• Press Force, select 40 gf

Make the toolpath

1. Open CAD.py in a Linux Terminal or click on the shortcut launcher in desktop.
2. Make the toolpath for the circuit.
3. Click CAM
4. Click Output format and choose .camm (CAMM)
5. If you're using a circuit board written in Python, you'll find a line near the bottom saying "#dpi = 500 ".
6. Move the ("#") sign to the line above which is "dpi=200
   • The "#" symbol is a comment, which will ignore the line of the command after the sign.
   • Use "dpi = 200 # low resolution for previewing" for previewing toolpath contour
   • Use "dpi = 500 # high resolution for machining" actual rendering and sending to Modela (takes longer to render)
7. Set contours to 1 (meaning 1 outline)
   • tool diameter. 0.01
   • tool overlap 0.5
   • force 45
   • velocity 2
8. Click Contour
   • This will set the toolpath for the file
9. Now you you should click send to machine

• Note, Force settings can be variable between time and machines.
  • In Vestmannaeyjar, Iceland Fab Lab we have been using Force 70 on the machine.