video upload by DeftAudio
"A quick overview of DIY MIDI interface kit for Eurorack based on Teensy 4.0 CPU.
Available here: https://www.tindie.com/products/defta..."
"Here is an Eurorack version of the popular Teensy 4.0 controller with 5x5 MIDI interface on TRS-A/B (selectable) ports as well as audio output.This board is designed for Teensy4.0 and it's not compatible with other Teensy products. If you're looking for a similar board for Teensy4.1 or Teensy3.2, please, check other products in my store.
The board provides 5 input / 5 output functionality. This can be your 5x5 MIDI interface, merger, splitter, filter or whatever else you can imagine. This obviously requires programming the Arduino framework with Teensy extensions. I include basic firmware so, you can get USB MIDI running out of the box without any need to learn Arduino.
This TRS version is capable of setting a MIDI specification per port for TRS-A or TRS-B by moving jumper settings. This provides the flexibility to interface it with all vendors no matter the specification used.
You also get one Audio output (stereo) from Teensy Lo-Fi MSQ port. By default it's a sine generator programmed onto USB Port 6 and doesn't interfere with other 5x5 MIDI ports. It can be your clock out, trigger out or some advanced synth. Audio programming for Teensy is also straight forward.
All Teensy pins are available on extra pin headers. This allows easy expansion if you're planning to add extra LEDs, buttons, OLED display, in/outs etc... You can do that without soldering.
Package options:
PCB alone: This includes two PCBs(main and daughter) and aluminum front panel
Complete Electronics kit: Includes PCBs, front panel and all electronic (but Teensy4.0) - TRS connectors, optocouplers, headers, resistors, diodes. Check BOM list by the link.
Teensy microcontroller is not included with any purchase, you can buy it directly from the manufacturer: https://www.pjrc.com/store/
There are several options for providing a power:
From Teensy USB port
To be used with Eurorack 16pin power supply and sourcing 5V from eurorack (JP1 1-2)
To be used with Eurorack 10pin power supply, sourcing 12V from eurorack and doing onboard 5V conversion (JP1 2-3)
Board size and an enclosure choice: Eurorack size: 6HP, PCB Size: 10.8x5.4cm"
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