LEd color impact?

[Cybercow]

That is one tiny ass chip then! Haha

Yes. they are very tiny. I was surprised too. But considering they come in bot fast and slow cycling versions, I can't see how they'd do it otherwise.

And the point remains that the tiny µ-processor does inject noise if additional filtering is not added near those color-cycling LEDs. More importantly, I'm looking forward to seeing how you apply one or more in a build.

Here's what I did with mine . . . . . Dark Of the Moon Demo

 

[Cucurbitam0schata]

Coming back to this question:

I've built three pedals so far (Bit Captain / Phase II / Sea Horse - build reports are a comin'!). The LEDs for the Phase II (3mm green) and Bit Captain (3mm blue) called for 4.7K, had to up them to 10K+ to tone the brightness down a bit.

For the Sea Horse, the LED is also the LFO indicator (as far as I can tell). Build docs call for a 1K resistor, location R31. Will changing R31 to something more like 10K mess around with the LM324 chip or anything else for the sound?

 

[zgrav]

I don't think dimming the LED by using a higher value resistor will affect the circuit, but try it and see before soldering in whatever LED you choose.

 

[Chuck D. Bones]

Making R31 bigger will have no impact on the LFO or the sound. Go for it!