Full albums now on my channel

Hi guys! I decided to upload my two albums on my channel so here goes:

Some background:

'REMNANTS' (2015)
is my debut album I released as my Bachelor's Project under the Academy of Music.
I designed a simple circuit for an audio player and composed an album out of recordings
from my various audio material from my DIY projects.

RECLUSE [2020]
is my second album I composed just before the pandemic in a somewhat depressed but lucid state,
after dropping out of my Master's study due to health problems. I regressed into the past and started
composing music for my newly finished modular system and old tracker software.

Eurorack Modules: DIY CRT scope

Hi guys, I know it's been a while.
I've fallen behind with updating my blog although I've been active on my facebook and my YouTube pages. Sometime back in 2018 I decided to switch to eurorack as my DIY stuff required a lot of maintenance. I uploaded this video of my current studio recorded with an old crappy camcorder where you get the general idea of the setup:

I've bought several weird modules which sort of fits into my previous aesthetic with vero test-boards, bendable CMOS-chips, tube-amplifiers, CV-controllable tape-player, nixie tube counter and a custom built CRT-scope module I designed in collaboration with a tinkerer from Belarus under the name Ghetto Hacker. 

I stumbled upon this Ghetto Hacker guy where I saw he'd built a module for eurorack with a small CRT from a camcorder, used as an oscilloscope. I paid him for his time and skills to make me one and the result is really amazing, sturdy 3d-printed arm to hold everything in place and a nice black front plate.

 

Here's some video:

Ghetto Hacker's finished work:

 

 

Testing module in my own case:

 

 And here's some pix from the build:

Blueprint for mounting	Layout for front plate	Front Plate done!
CRT installed	Under construction	Finished module installed

If you're interested to see what I'm up to, go follow me on YouTube (Dani Dogenigt) or find Dogenigt on facebook. I think I am going to give a guided tour of my eurorack system so you can see some of the modules in action. Please take care and see you soon!

Aristoteles Logic Synth Update #1: MIXER

Oh what a spring it's been! I was bedridden for about a month which really zapped all my creativity and I've slowly recovered now to bring back my mind on what is the icing on my cake of life: electronic gadgeting.

So just around New Years Eve I posted a picture of my newly assembled modular synth casing - no intestines yet though! But just before my bed claimed me for a minor lifetime, I was able to finish up the first and central part of the system: the 8-channel mixer with simple BP/LP filters + power supply.

Here's a demonstration of what I am talking about:

So the idea is that you have 8 channels in the mixer which are summed together after they've passed the filter circuit and the respective volume knob. When using stackable banana-jacks one might ask why bother with a multi-channel mixer; why not just stack 'em on top of each other and using passive resistor/diode mixing?
The problem for me was that mixing with just resistors would cause each output from every oscillator to drop in voltage and maybe cause instability with edge-detection in the chips they would enter - and diodes make distinctive modulation when used for summing. Which is why every output enters a diode, so it's still possible to mix signals together in a single mixer channel if one is running low on free channels. Other than that, diodes make sure that no cross-talk occurs if stacked for multiple operations.

Some pics:

The power supply was super simple, just a power switch and momentary N/C button to switch on  and off and discharge the 470uF cap to get the power starve effect. Starving only affects the CMOS-chips used for sound generation, the mixer circuit isn't affacted by the variable supply voltage.
I will discuss the other modules in future entries and here's some schemes for the willing.