can anyone help with flashing rate mod for collosalus mxr clone flanger?

[njkmonty]

can anyone help with flashing rate mod for collosalus mxr clone flanger?

ive done this on both ada clone and current lover no probs, but when running a led of  " sweep "  pot   without a current resistor, led hardly noticeable?
anyone done this mod successfully?

http://www.madbeanpedals.com/projects/Collosalus/docs/Collosalus.pdf

[Fender3D]

I can't draw right now, but..

pin 7 > 10K~100K to NPN Base
Collector to +V
Emitter to 4K7 + LED to ground

The higher the base resistor the lower the op-amp loading.

[njkmonty]

so its a ;little more involved than just a led and limiting resistor?
npn like 2n3904

[armdnrdy]

Federico explained the proper way to implement a Rate LED in the circuit.

A transistor is used to drive the LED instead of the LED being driven directly from the LFO.

You can try "hanging" a current limiting resistor and an LED from pin 7 ....but you may have unintended consequences.

Using a transistor driver eliminates potential issues.