What living electronic musician hasn’t encountered the need for a MIDI to USB converter at some point in their career? When forum user XFer experienced this need, they did what any clever hacker would do: DIY their own converter.
XFer used a Teensy 3.6 and the MIDI Library guide on the PJRC website to set up the hardware and software. They also added a portable battery bank to provide power for both adapter and keyboard that lasts for up to three hours as well as connecting a pair of LEDs to indicate the status of the MIDI connection. XFer has included the source code for the project in their forum post along with some awesome photos of the adapter in its 3D printed case with inputs for all the cables.