[Joonas] became frustrated with cheap but crappy MIDI to USB converters ... We’ve featured several of [Joonas]’s hacks here over the years, the most recent being the Beaglebone Pin-Toggling ...

When we hear spectrometer, we usually think of some piece of high-end test equipment sitting in a CSI lab. Sure, a hacker could make one if he or she put their mind to it. But make one out of a ...