I would like to print a fairly common circuit. But I don't want to design the PCB myself. Where should I look when searching for PCB layouts?
If you're interested in arduino, there is http://shieldlist.org. It's a wiki listing of all of the boards that can interface to the arduino board. All should be licensed as open hardware.
Several places publish open-source PCB design files:
- Olimex sponsors open-source PCB contest every month; all documentation (including the PCB layout) is posted on the Massmind
- Circuit Cellar magazine hosts design contests a couple times a year; often PCB layout and other documentation is posted on the Circuit Cellar "contests" page.
- The Open Circuits wiki has a list of open-source hardware projects.
Sometimes people post open-source hardware design files on one of the popular open-source software places -- Google code, Sourceforge, Launchpad, Github, etc.
A few places are trying to make it easy to buy open-source PCBs -- the actual, physical things you hold in your hands, not merely some computer file:
- BatchPCB will sell more copies of your PCBs to anyone else that wants one. And give you money. Why wouldn't you want that? BatchPCB discussion forum at Sparkfun. A database of PCBs other people have designed.
- Open Source Hardware Bank (early discussion) has a library of open-source PCBs
- Seeedstudio has discussed a library of open-source PCBs.
- Arduino Shield List links to the source of many Arduino shield designs. Some of those sources merely publish the PCB layout files; others, in addition, sell the physical hardware -- typically as a kit.
I found some open source hardware at
but there are many software projects in these results also.
The only way I found of getting hardware only results is searching for PCB files:
Maybe you find something interesting in the Arduino board at Dangerous Prototypes forum:
I have built kitspace.org with expressly this purpose. It is an open source site for posting open source hardware electronics projects. The site makes it easy for others to find the Gerber design files and buy the required parts.