Teensy 4.1 MIDI Breakout board 8in / 8out USB host

The board provides MIDI 8 input / 8 output functionality and USB host. This can be your 8x8 MIDI interface, merger, splitter, filter or whatever else you can imagine. It can also work in conjunction with other USB MIDI class compliant devices. This obviously requires programming Arduino framework with Teensy extensions. Teensy example firmware is provided.

Power is supplied from Teensy, so no external power required.

All Teensy pins are available on extra pin headers. This allows easy expansion if you're planning to add extra LEDs, buttons, OLED display, audio inputs or outputs, etc... You can do that without soldering.

Package options:

- PCB alone: Default

- Complete Electronics kit: Includes PCB and all electronic (but Teensy4.1) - Din5 connectors, optocouplers, headers, resistors, diodes, USB socket. Check BOM list by the link.

- Fully Assembled unit: doesn't include Teensy microcontroller.

Teensy microcontroller is not included with any purchase, you can buy it directly from the manufacturer: https://www.pjrc.com/store/

Board size and an enclosure choice:
Size: 82mmx177mm

Some of you wondered ideas for enclosure selection. We found it much easier to put them in between two acrylic panels cut to the size and connect them with plastic standoffs. We typically use M3 standoff 20mm and 5mm. 20mm goes on top, and has enough room to cover DIN5 sockets, while 5mm goes on the bottom. You can purchase it as optional accessory or make your own. There is CorelDraw file on Github with precise board dimension and holes location.

Please, consider Deftaudio page at Github for sample firmware. And please, watch a video.
All the best, feel free to ask any questions.
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