I found myself short of an ADSR in my system and it annoyed me to no end I hadn’t thought of buying a few more. Instead of hitting the favourite Eurorack module dealer for my fix I went googling to see if I could cook up one of my own. Couldn’t be that difficult. Right. Turns out, there are tons of useful ADSR schematics floating around on the internet. Continue reading “ADSR-1”

Buffered multiple

A very boring yet crucial part of any setup. A buffered multi always comes in handy and it’s pretty easy to build as well. Since I was building one myself I added a few leds to indicate signal and it’s polarity, that way I got some indication what’s going on. I used 2 separate leds since I didn’t have any dual coloured leds lying around. It would look a bit fancier with a dual led, maybe I should order a few, just in case I build a few more of these.

Continue reading “Buffered multiple”

Input module

It shouldn’t be all weird stuff, sometimes one needs some simple building blocks. After a bit of experimenting with sending audio from the mixing desk to the modular I found myself short of a way to amplify a line level signal to the audio levels used in a modular. Hence, I thought I build myself an input module with the sole task to take in a line-level and give it a nice boost. It’s a simple module actually.

Continue reading “Input module”

The Oscillator One – update 1

I’ve put some updated schematics for the oscillator one online.  Changelog:

  • Changed Linear Ramp output volume so it’s in line with the other ones (R59 to 20k instead of 10k)
  • Changed the sensitivity of the coarse and fine knobs (R10 and R11)
  • Used an LM4040 to create a 5V reference instead of L7805 and L7905 voltage regulator. I hope this will improve stability when switching octaves.
  • Added a potentiometer for the saw animation in