I have been looking for some inexpensive MIDI-to-USB converters, as the wires seem to have broken on the two I have. The nice thing about this one is that instead of permanently attached cords that can't be replaced, this board actually has high-quality JACKS for you to plug in your own USB and standard MIDI cables. Not only are separate cables usually higher quality, but if there is a break of problem with a cable you just unplug it and plug in a new one!
I am VERY impressed with the quality of this little board. The connectors feel very solid. The soldering is SUPERB. The components look 100% quality and the PCB quality is excellent too. As far as I can tell, it is completely MIDI USB class-compliant, so no drivers are needed. I've tested it on Windows, Mac, and Linux. Currently using it on a Raspberry Pi. I have never seen a dropped note on, note off, or other message, and nothing important seems to be filtered out. Basically, *pure* MIDI to USB.
You can't find anything this good for the price on Amazon or eBay. I am ordering 2 more right now.
This board plugs into just one of the two connectors on the back of the display and can be powered off of the usb port. It came with the example sketch shown in the video and is very well done. Delivery time took around five weeks but was free. I highly recommend this purchase.
Couldn't connect to my wifi whatever I did (using the captive portal), until I re-flashed the firmware. The flashing blue led on the ESP8266 is really distracting, I had to unsolder it. Reflashing the firmware needs quite a number of libraries, which are not all listed in the documentation, but reading the source is enough to find them. The board is fine but would really benefit from mounting holes. I printed myself an enclosure and I'm happy with the final product.