MATRIXSYNTH: Deftaudio midi merger [DIY & github] quick review/demo


Monday, April 11, 2022

Deftaudio midi merger [DIY & github] quick review/demo


video upload by Meska

"More a realy quick review, than a demo, but you don't need it for simple function like that.

Many other configuration : https://www.tindie.com/stores/deftaudio/
Github : https://github.com/Deftaudio/Midi-boards

Thank you for watching.
My name is Meska of the statik collective . I've been making mostly "dark and expérimental" music for more than ten years now, i'v learn so much online, now it's time for me to share my knoledge, my exploration and this channel is a place to talk about the tools, sound design and techniques to make music with.
i'm tattooist at day jobs and you can found my work here : www.meska.fr

You can stream my albums and EPs at https://statikwave.bandcamp.com/

If you'd like to support the channel​ consider buying music from bandcamp ;)"



"This MIDI Merger / Splitter is the special 2 input 5 output thru box which I designed from scratch while not being happy with other options.

It has two MIDI input ports which are merged together by a microcontroller and then split to five MIDI outputs. Programmed microcontroller is included with a PCB or Kit purchase.

It has optimized schematics for 5V and 3.3V MIDI sender devices, optimized circuitry for optocoupler to minimize false triggering and improve sensitivity. Finally it uses hex inverter with a Schmitt trigger for driving a stronger output signal. This makes it very reliable device. This is an active circuit, so it does require an external power. That’s the way it should be according to the MIDI specs.

There are two options for external power:

To be used with a standard wall adapter 6-12V and 5.5mm*2.1mm connector. In this case a Kit comes with corresponding socket and 7805 power regulator
To be powered from USB port. In this case a Kit includes USB->5.5mm*2.5mm cable, corresponding power socket (so you wont plug wall adapter) and doesn't include 7805. Instead of that you'll solder a jumper Pin 1 and Pin 3. Leave Pin 2 not connected. Please make sure, you use USB port or adapter with 5V output and verify it prior to connecting to the board. There are some QuickCharge USB chargers which can bump a voltage. Please, avoid using them.

Board size and an enclosure choice: Size: 5x17cm"

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