Absolutely. Right now, you can set LFO in Millihertz (103Hz). Slower values will be available in the next firmware update I do; right now you can do as low as 1mHz (.001 Hz) . The waveform should be super-butter-smooth as it is interpolated in most all use cases.
Check it out at 125mHz (as slow as I could get O'Tool to draw the waveform):
Sure; updated your allotment.
Holy crap that was awesome!! Made my day. Thx for all the help on this project. Sincerely appreciated.
In short - PM me. I've closed out the reservation list - but might have enough wiggle room to fit you in.
Yes - with a handful of basic waveforms + pulse width + rectification. This pushes the Teensy to its max, btw. The larger, but pin-compatible Teensy 3.6 has a lot of promise in regards to pushing the line even further. Just haven't started experimenting yet.
I should note that there aren't any complex alias reduction techniques at play; there just isn't enough cycles left on the processor if we want four independent voices. So - waveforms with more harmonics generate even more harmonics, especially as they go up in frequency. Sine waves will always sound lovely - as they always do.
By the way, that video above (and the one below) are my initial test production units using all of the parts ordered for production and the new PCBs. So far, so good.
Enjoy the random positive and negative voltage tests: