Making PCBs with LDGraphy HD

On github: https://github.com/hzeller/ldgraphy http://ldgraphy.org/ is an effort to design an Open Hardware Laser Lithography device accurate enough to be used for home PCB manufacturing. Also known as Laser Direct Imaging, this process allows repeatable results without the hassle of transferring the artwork to a film first. LDGraphy uses just off-the-shelf components (e.g. the polygon mirror is a cheap replacement part for laser printers). The total cost of the components including the BeagleBone and the Acrylic for the case is around $100. This is in the early stages, but the resolution is already pretty usable: better than 0.15mm/6mil for traces and clearance: https://plus.google.com/u/0/+HennerZeller/posts/a8taHWeL5CC Bonus videos: Very early experiment: https://youtu.be/8tyT4CI-1io After it became apparent that a HSync circuit would be needed, this early form of LDGraphy bootstrapped itself by making a board that can do that: https://youtu.be/6AuSf7oTts8