I keep postponing writing the build log of these modules, but here’s the 4th module in my rack, a Magnus Danielson design sawtooth phase shifter which is really an extension of the sawtooth octave doubler design on the same page. Magnus created these schematics 10 years ago to be as simple as possible, and this particular one contains an error which you should fix if you want to build this module. You’ll have to figure out for yourself, though…
I also broke out the internal comparator, which could be used to make a PWM easily.
As always, here’s a video of me playing around with the module, with an oscilloscope so you can see the waveform. Please turn on 720p for slightly better audio quality. (Should already be on by default in this embedded player.) There’s a bunch of annotations throughout the video explaining what I’m doing.
The next module I’m planning to build… Will probably be a cool one, so stay tuned.