Beautiful and Bizarre Boards

weirdboard
An odd board (piezo coupler), fabbed by OSHPark.

Recently I’ve been getting curious about interesting PCB shapes. In the past I’ve always used simple Polygons, perhaps rounding out the corners to make the design a little more aesthetically pleasing. The board to the right was my introduction to the possibilities of oddly shaped boards. It’s designed to couple with a piezo buzzer (used as an actuator). I’ve been planning to have it fabricated out of FPC (Flexible Printed Circuits), but with fabrication being so cheap I sent it to OSHPark to see what they’d make of it. OSHPark doesn’t have hard specs around internal routing, but in my experience they’re up to try anything (and they’re quality is always great). The width of the prongs on the PCB shown is 5mm. I figured it was a risk, and that it was likely the FR4 could break, but it came back great!

This has led me to the realization that my boards could look much more exciting than they do currently, and that our highly optimized modern PCB fabrication process provides a lot of room for experimentation. This article will discuss some of the options available when creating non-traditional PCBs.

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Turning PCBs into art

Designing a circuit, laying out a board, and sending it off to be fabbed is so easy anyone can do it. A lot of people are, in fact, and with the traditional tools like KiCAD and Eagle, a lot of different boards look very, very similar. You could always add some cool silkscreen graphics to your board to make it stand out, but [Saar] has a better solution: it’s called PCBmodE, and it allows you to draw circuits artistically instead of the 45° angles we’ve become so accustomed to.

PCBmodE takes the parts, pads, signals, and vias for boards stored in JSON files and converts them to an SVG representation. The file is then routed (manually, but [Saar] is working on automated routing) and Gerberized so it can be sent off to a production house.

You can grab PCBmodE over on bitbucket, but right now it’s still a very early version. Vias and copper pours are working, but [Saar] has only fabbed this board so far.