Ian Miller from pxlweavr.com shared this awesome project build:
engravR is a Raspberry Pi powered laser engraver built primarily using two old DVD RW drives. It was built following the following tutorial: http://funofdiy.blogspot.com/2013/10/…. Note that I did make changes to the code given there in order to allow remote engraving and to be able to read the kind of GCode that GCodeTools generates. I’ll publish that code as soon as I can.
Ian’s code is available on github where he welcomes people to try it out modify yourself!