Please indulge me in this idea that popped into my head while laying awake last night.
Would it be possible to make a small (minijack or quarter inch) teensy controlled matrix mixer that can work as a USB host for a 16n? I’m thinking passive, but I am open for input/possible pitfalls of doing something like this.
By usb host I take it to mean 16n sliders would map to each of the 16 matrix points. Yes, you could do this, but it’s the hard way to make a matrix mixer! You would need 16x vca’s and 16 channels of DAC on top of the USB host.
(Edit: you could use 4x 4 channel gain cell ICs instead of VCAs)
There are heaps of 4x4 matrix mixer designs around and they would be far cheaper and easier to build. You could even build one with fader pots if that’s you main desire?
Spaghetti is one of the reasons I want to do it with a usb connection. Since there is already enough spaghetti connected to a matrix mixer as is. And since I am abstaining from modular I was thinking stand alone.
I had similar inspiration and began thinking about retrofitting both 16n and Mix04 with HDMI jacks. If you wanted to go digital I think some I2C DACs w/ modified 16n firmware would be quicker development than a Teensy. You might also want some analog slew on the VCA control signals to avoid zipper noise.
it’s completely possible. whether you think it’s worthwhile is another matter; it will be relatively expensive (mcu with USB host, sixteen channels of DAC, four four-channel VCA chips, the cost of your time to write all that damn firmware).
sixteen analog jacks into a CLUMP or derivative is much less hassle. keeping things in the analog domain means you can just use the 5V CV outs on the 16n, you don’t need any firmware or MCUs or USB hosting. just power to the mixer, and sixteen control lines.
also, as mentioned elsewhere, the I2C jack is probably a better fit, costwise, than USB; simpler protocol, highly suitable for this, but you still need DACs. There may be ways to do something clever with fewer channels of DAC and hold-capacitors, but that’s an exercise for the reader.