Triggering Delay/Loop Pedal With Logic Chip?

[samp]

Hi,

Just wondering how I would go about automatically triggering a momentary pushbutton within a guitar pedal(Behringer DD100) by using a CMOS chip.

I would like to connect a logic oscillator to the pushbutton to control its on-off state. Could the chip's digital +9V output be enough to turn it on, or would I need a transistor for the switching?

Thanks for any help!

[JovianPyx]

[PHOBoS]

4016 or 4066 as scott mentioned will probably be your best bet and work in most cases. There are other options
which could be preferable because you wouldn't need a whole chip but it depends on how the switch is connected.
If it connects to GND then a single transistor will do or even the output from a logic gate directly with a diode in series.

[samp]

Fantastic, thanks guys.

Good to know it's easier than I thought. I will try it with diodes/transistor if no luck.

[samp]

Hi Again,

So I've wired this up, (see attachment) using a Schmitt trigger>4066>pedal button.

The pedal is being triggered, but at a really high frequency which I can't control with the oscillator.

Am I approaching the 4066 wrong? Maybe I need to desolder the pedal button.

Thanks

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[JovianPyx]

That looks correct.

"high frequency" triggering would have me believe that the 40106 oscillator is running at a high frequency. Do you have a scope so that you can check that? You don't show any values for C and R for the oscillator - that's important since those two components determine the frequency of the oscillator.

Is there any chance you have a schematic for the pedal?

[samp]

Got it switching! Woo!

I think because of the type of pedal button, it needed two oscillators from the 40106. Got the idea from Hackaday http://hackaday.com/2015/08/07/logic-noise-4046-voltage-controlled-oscillator-part-one/#more-163851

Thanks for the help and suggestions.