flashing led ea tremolo bypass

[mutagenic]

Howdy folks,
I built an ea tremolo using markm's layout:
http://www.aronnelson.com/gallery/main.php/v/MarkMs-Gallery/album15/album76/ROG_EA_Tremelo_LAYOUT.gif.html
I'd like to have the flashing rate led turn off when the effect is bypassed, and on when it is engaged (flashing with the rate of the tremolo).  Mark's layout has pads for the positive and negative leads of the led, but when the led is wired to these pads, it flashes even when bypassed.  I have read that you can wire the negative led lead to the unused pole on the 3pdt.  How is this done?  My 3pdt is currently wired according to the tonepad off-board wiring schem:


lug 1:  tip of input jack, also connected to lug 9
lug 2:  pcb in
lug 3:  connected to lug 6
lug 4:  open
lug 5:  ground
lug 6: connected to lug 3
lug 7:  pcb out
lug 8:  tip of output jack
lug 9:  connected to lug 1

Any assistance is greatly appreciated.  This is a great sounding tremolo, I just want to have that darn led turn off when bypassed.

Thanks!

[mth5044]

You might as well try connecting it to 4. When the switch is thrown, 1 connects to 2 which will take the in signal to the pcb. 7 connects to 8, which takes the output of the pcb to the out jack. 4 connects to 5, which grounds lug 4 because lug 5 is grounded. So if you connect the - part of the LED to 4, when the effect is turned on, the LED will make a circuit with the battery and turn on.

I dont know if that will work with how the pulsing LED is supposed to work though. I don't know if it has to be inbetween to componants or something, but you might as well try it. Dont solder it in, just keep it firm on there and see if it works, then if it does, just solder it.

Here is the GGG mods to the circuit. The second diagram is having an LED as an indicator and also a speed led. It should be that it shuts off with the effect, so check it out and go from there

http://www.generalguitargadgets.com/pdf/ggg_eat_mods.pdf

hope that helps 

[alex frias]

I did something similar to my Tremulus Lune, but used a bicolor LED to use the colors for status info and this way see the oscilation frequency with the effect bypassed. Very simple ans very usefull if you have a two preset LFO frequencies switchable by a footswitch.

[mutagenic]

You might as well try connecting it to 4. When the switch is thrown, 1 connects to 2 which will take the in signal to the pcb. 7 connects to 8, which takes the output of the pcb to the out jack. 4 connects to 5, which grounds lug 4 because lug 5 is grounded. So if you connect the - part of the LED to 4, when the effect is turned on, the LED will make a circuit with the battery and turn on.

I dont know if that will work with how the pulsing LED is supposed to work though. I don't know if it has to be inbetween to componants or something, but you might as well try it. Dont solder it in, just keep it firm on there and see if it works, then if it does, just solder it.

Here is the GGG mods to the circuit. The second diagram is having an LED as an indicator and also a speed led. It should be that it shuts off with the effect, so check it out and go from there

http://www.generalguitargadgets.com/pdf/ggg_eat_mods.pdf

hope that helps 

Thanks very much.  Actually, I tried that and it didn't work.  I thought perhaps I needed to connect it to one of the other lugs such as 3 or 6 which are connected to each other.

[mutagenic]

You might as well try connecting it to 4. When the switch is thrown, 1 connects to 2 which will take the in signal to the pcb. 7 connects to 8, which takes the output of the pcb to the out jack. 4 connects to 5, which grounds lug 4 because lug 5 is grounded. So if you connect the - part of the LED to 4, when the effect is turned on, the LED will make a circuit with the battery and turn on.

I dont know if that will work with how the pulsing LED is supposed to work though. I don't know if it has to be inbetween to componants or something, but you might as well try it. Dont solder it in, just keep it firm on there and see if it works, then if it does, just solder it.

Here is the GGG mods to the circuit. The second diagram is having an LED as an indicator and also a speed led. It should be that it shuts off with the effect, so check it out and go from there

http://www.generalguitargadgets.com/pdf/ggg_eat_mods.pdf

hope that helps 

If all else fails, I'll just change the off-board wiring to match the GGG layout.  That should do it.  I guess I need a tutorial on how these 3pdt's actually work.

[arma61]

If all else fails, I'll just change the off-board wiring to match the GGG layout.  That should do it.  I guess I need a tutorial on how these 3pdt's actually work.

i think you need 2 "free" lugs on the switch to brake/make contact the circuit of the led, it's not connected to ground but between a cap and +9, so GGG layout is made out for this solution. I did it this way and it works like a charm.

Cheers
Armando

[mutagenic]

If all else fails, I'll just change the off-board wiring to match the GGG layout.  That should do it.  I guess I need a tutorial on how these 3pdt's actually work.

i think you need 2 "free" lugs on the switch to brake/make contact the circuit of the led, it's not connected to ground but between a cap and +9, so GGG layout is made out for this solution. I did it this way and it works like a charm.

Cheers
Armando

Thanks Armando!
I'll give that a go.
Regards,
Cory