I need help with blinking tremolo light

[evildead222]

I just built a colorsound tremolo it works fine but i can't get the blinking LED to work right. I hooked one wire and a 1.5k resister from the collector of Q3 to the flat side of the LED. and i hooked the rounded side of the LED to +9v. It blinks but it doesn't turn off when i turn the pedal off.  Anyone know how to fix this?

[borntwisted]

That might be intentional, so you can see and set the speed visually without the pedal being engaged, handy for when playing live I should imagine.

[Rolf Poti]

It works perfectly then, but you could wire the led so it only blinks when pedal is engaged if you would hook the led up to the footswitch. Just look at the offboard wiring and replace the usual (9v + resistor) with (Circuit led + resistor).

hope it helps

[toddvirgil]

I think most circuits are still running power when in bypass -- bypass wiring usually only switches on/off the in/out and the LED power. So you'll have to run that LED through your 3pdt as well. Do you have an LED for bypass too, or just this one?

[evildead222]

i only have this one LED

[toddvirgil]

Wierd, I didn't see the other responses before posting mine, woops! yeah, so just take it through the third pole on a 3pdt like you normally would.

[evildead222]

i have one side of the LED connected to 9v and the other to the collector of Q3 it blinks but how do i connect it to the 3pdt footswitch

[toddvirgil]

I think you should be able to take the LED (+) to center lug of 3PDT, then take the engaged side of the pole to your 9V source and leave the other lug empty, thus breaking the connection when it is disengaged.

[Rolf Poti]

Open this post in a new window. It should help you

Im not sure if you should use the current limiting resistor

[Surgeon]

Why don't you wire your indicator led (hooked to the FS) that same way? Doing so, it'd blink only when the pedal is engaged... maybe I'm oversimplifying the process a bit but that's what I did with my EA trem and it works perfectly.