With most of our dev boards, sensors and feathers now sporting plug-and-play stemma QT ports it can be very fast to put together projects with half a dozen boards snapped together. But that ease of use has one downside: now you don't have a breadboard as a mechanical substrate... which is why we created this nifty swirly grid design to allow for easy mounting of various small microcontroller and sensor boards.The grid is made out of an 'aluminum PCB' - we have that in quotes because...