Chorus like auto wah?

[Havaden]

So i just got the idea to mix theese two circuits to make a chorus like wah pedal.


Does anyone know about a circuit like this? or do i just have to experiment with it?

I will need to turn the frequency down a notch on the 555 timer with a cap, and turn the square wave into a sinus somehow.

[Luke51411]

How do you mean Chorus like? Is it just an autowah that is controlled by an LFO? I have a wah build in progress that has a switchable lfo for an auto wah option. If that's what you want, the combination of those two schematics should work as is though you may want to tweak to taste, breadboard is the way to go. Build it and try it out! The LED and LDR will make a big difference in sound, try different color LEDs and/or LDRs until you get a sound you like.
I used this lfo on my build and it sounds nice http://www.grindcustomsfx.com/forum/viewtopic.php?f=2&t=391
there is also a vero layout over at tagboard effects if you like.

[deadastronaut]

well it wont be 'chorus' like...

it will be a tremolo with a filter...like the tremshifter i have just finished working on , (awaiting pcbs)

clip: thread.
http://www.diystompboxes.com/smfforum/index.php?topic=107197.msg975000#msg975000

check the schemo just below..   however it has developed a lot more since then...as is always with my projects..

i would stay clear of the 555's for lfo's..there are better solutions..using plain old opamps.. tl072 etc..

[duck_arse]

well seeing as you're going to stuff about bb with it, with respect to the lowaht, split the input 1M to something, maybe 220k and 680k in series. ditch the 100k, and put the LDR from your soon-to-be-tremolo from the junction of 220k//680k to ground. flash a led at the ldr - tremolo to wah.

if you add an envelope for auto-wahing, you need to take the env. input from before the tremolo ldr, or you'll get something wierd wired you weren't waiting for.