40106 LFO ideas and help with the ticking

[Cortexturizer]

Okay, so I've built the Doombutter, and while I've included all the mods, I thought about doing a bit more and having an LFO/envelope toggle on my build to choose between two different options for driving the LDR.
For the LFO I chose this one from the beavis' site (because I am incredibly lazy, and didn't want to build anything more complex):



It works very well and gives the clarinot sounds that I'm sure you guys will get excited about. What I would like for somebody to help me with is two things basically:
1. I'd like to get the rate slower than the minimum rate that the circuit built from this schematic gives. Is that possible or is it inherent to the 40106 chip?
2. Can I smooth the harsh square wave voltage output somehow? I'd love to be able to have it gradually rising in brightness up and down as opposed to just being on and off instantly. I know i've done a similar thing in the past with the phase 90 led rate indicator by using some electro caps to smooth out the wave but I cannot find how no matter how much I dig...

This LFO introduced ticking into the build unfortunately, I am not sure how to remedy that. I've grounded the LFO daughterboard to my input jack which is the star of my star grounding method. Any advice on this?

Thanks!

[midwayfair]

1. Reduce C1. You can increase the pot to get a larger range for the rate, or just decrease the capacitor to shift the entire range downward.

2. A single inverter is just a pulse. You can't smooth it out without using at least one more stage for the LFO (take a look at the Anderton tremolo ... I think you can do something similar using the 40106), which will get you triangle, or two more, which will get you sine way, or adding additional active parts, in which case you might as well build a better LFO in the first place.

The ticking could be caused by any number of things, including sudden current draw, or the fact that there's no filtering on the output of the LFO (you could use a transistor).

[Cortexturizer]

Yeah, so it's just as I thought, I can't really smooth it out. The cool thing is that the clarinot features the Depth control which smooths out things a lot anyway.
I'm actually satisfied with the way things are now, but the ticking should be reduced or killed completely.

you will forgive me but I haven't looked at many LFOs, the firs one that I really spent some time with was the Harbinger LFO. So by filtering, you mean run the output from the LFO through some sort of transistor buffer/filter, right? What would be the easiest solution? Google searched for a few minutes, haven't found anything applicable.

[culturejam]

I've tried various versions of the Opto-Chopto LFO, but have never been able to kill the ticking.

[Cortexturizer]

Damnit.

[culturejam]

Just because I couldn't figure out doesn't mean it can't be done. Not by a mile. 

[Cortexturizer]

https://drive.google.com/file/d/0B--6F_4JB7SYOVk3NjZzUy0zeUk/view

here's a soundclip of what I'm doing here

100% wet signal only