PCB2G

Overview

PCB2G software can be used to convert bitmap images of PCB into CNC G-code for LINUXCNC. G-code can be used to route dividing lines into copper layer of PCB.

Scanned images from paper or converted postscript or pdf files converted to bitmap images can be used as input image. Another way to get input images is generating bitmap images from electrical CAD software like KICAD or EAGLE and others.

Input image is analyzed by PCB2G. PCB2G searches for holes positions and calculates dividing lines. Vectorized dividing lines and drill positions can be found in output CNC g-code.

Input files

Example input image is analyzed for dividing lines
Input file must be in portable bitmap or portable graymap format. More information can be found in NETPBM library. You can use convert from imagemagick package co convert other image formats into portable bitmap format. An example input files (508DPI or X=44.45 Y=87.63) can be downloaded here and here.
An optional drill input file can be used to define precise positions of holes on board. Only KICAD output file was tested. More informations can be found in this HOWTO and example drill file for PCB can be downloaded here.
Other example input file (186DPI) without drill file can be downloaded here.

Output files

Final G code can be used to route dividing lines and mark drill positions.

The same code with turned Block Delete switch can be used for drilling PCB holes.

Alternative CAM generators for CNC code from PCB: pcb-gcode, pcb2gcode and cad-py