The STARGAZER is open source and uses a Teensy 3.2 microprocessor for almost all its sound generation. The Teensy runs on +5V, so you can basically just plug it right into your AE Modular rack and it will work fine. Its analog inputs only accept 3.3V but it’s easy to scale the CV signals down to that with a voltage divider. To actually add CV inputs though, I needed to free up some analog input ports, which meant I had to leave stuff away. I decided to remove the output filter2, the output VCA and the three LFOs, which are all just standard features done in software. If I want another filter, a VCA and LFOs I can just use my other AE modules for that. I also did not implement the analog CMOS distortion, because I didn’t have the proper IC and also not enough space on my 2U PCB. But again, I can get that from another module.
So with analog inputs freed up on the Teensy, I added CV control for pitch, filter1 cutoff, wavetable selection, aliasing, bit reduction and sub oscillator octave switching, which turns the STARGAZER into a very different beast than the desktop synth. Now I can use it as a regular oscillator for melodies, with dynamic wavetable modulation. Awesome!
I built this in-between things over a few days, so it’s a really bad DIY hack-job, with a lot of potentiometer noise and I think one or two faulty CV inputs which I need to check. But it still works well and it’s a cool addition to my AE Modular rack.
Given the general sonic craziness of the Moffenzeef stuff, Ross might actually consider making AE format versions of some of his modules. The Stargaezer would be a great choice, as would the Deviant, Dialup, Muskrat and Kriket. Lots of racket potential there, plus it looks like he's following some of the EE basics necessary already.
Post by NightMachines on Jul 13, 2019 10:01:01 GMT
Yes, it is indeed very simple to adapt the Teensy circuits to AE Modular. I’m checking out the other modules now. The GMØ also looks cool The only downside of using a Teensy in the AE Modular world is the price, which is at least 20$. So this would drive the price of a commercial module up quite a bit.