We’re getting started on a list of equipment, devices, and instruments to be opened, which is to say made in an open-source, DIY format over at the Open Source Hardware Association forums.
The current method is to create the device and a tutorial on its creation, post all of the relevant hardware information (.fzz and .ino files along with a tutorial) on GitHub under Open Source Instrumentation, and make a wish list on a relevant supplier’s site that is linked in the tutorial.
One good example is the RayCatcher, soon to be featured as a tutorial on learn.sparkfun.com. This is a cosmic ray detector that can be built for <$50, which is less than the cost of a single Geiger-Müller tube. The tutorial itself links to the Wish List on SparkFun, which allows for immediate purchase of all of the pieces and parts that the user doesn’t currently have, but makes allowances for the user to deselect anything that they already have access to or don’t want, something not true of previously tried kit approaches.