This is my first home made double sided circuit board. It is part of summer long paid project to monitor and control algae. I thought double sided would be incredibly difficult due to the alignment
issues. I made some reference holes and placed thick sewing pins in them and everything worked out. This board is a mix of through hole and surface mount. It took my little CNC over eight hours to mill and drill both sides as I chose to do multiple passes. It only took 30 minutes of my time to align the board and kick off each run.
Out of curiosity I checked in at barebonespcb which would offer a comparable circuit board except they do plated through vias. I calculated the price at it would have been $120 for a single board. I paid $4 for the blank copper board that was milled.
20110720
The Joy of Making Circuit Boards
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4 comments:
For me it is unbelievable that you built that. Congrats.
nellie
This is absolutely awesome. I think many, many people will follow your lead on this (no pun intended).
Late to the party: would you go into some more detail? I have a mill at work that has very carefully aligned dowel pins on the board centerline, so I mill one side, flip the board and the art, and mill the other -- but I can't figure out how to fixture that on the CNC at home and still be able to use it for other projects.
@smellsofbikes: Did you see this video? It explains how I handle alignment for the PCB on my home mill. It's not so different than your dowel system at work.
http://www.youtube.com/watch?v=xz4LCIJyd2A&list=UUMWPAE9QtcLAYhyc6Qdssfw&index=17&feature=plpp_video
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