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I gave the project some time. First of all I pulled out the ics, soldered out all cable and all capacitors. Then I measured the connection between all parts according to the diagram. Seams there is all ok. Then I measured all resistors. And - I first was happy - all 22k resistors had a value...

So I now had some time to "play". I "disabled" the footswitch by wiring the cables together. Then I used my audio probe cable. Input jack - Sound ok. After C1 - Sound ok. After R1 - Sound ok. Pin 3 of IC1.1 - Sound ok. Pin 1 of IC1.1 - Sound pulsating and little less signal Before R6 - Sound...

I didn't get a "noise" at the input of the signal path. I am getting a very, very quiet signal when I activate the pedal in comparison when the pedal is in bypass mode. Even on the output, input and one some pins inside. The signal is slightly modulated, but that makes sence. The waddle box...

I don't have experience with an audio probe. But I have found something like a cable with a capacitor. Shorty used some spare parts :) I connected my notebook on the input jack running a web radio to get a "constant signal". The I connected the ground cable to the enclosure. Now I bypassed the...

Me once more :) I have change IC1 and also put the diagram into LTSpice to get some values. The currently measured values on IC1 and IC2 are close to the expected values from LTSpice.

I have seen that the listed 22k resistors are delivered as 22.6k resistors. I think this is the problem that I didn't get 4,5V round of IC1.

No, I didn't drill the enclosure myself - it was my son :) . Not really difficult, but you have to drill slowly, carefully and accurately with a pillar drilling machine.

This I have done :) It was a Schalltechnik04 Pumpernickel Compressor - Great pedal - and it works fine ;)

Thanks, I have carefully measured once more with no signal on the input and all IC's inserted. On pin 1,2 and 3 of IC1 I have only about 3,65-3,95V. On pin 5 there are 3,19V als about on pin of R3. R100 is about 0V - My LED has stopped working :( But I think this is not actually a problem...

Also there is a resistor R4 (1M) between Pin 6+7 of IC1. Is it possible that there can be about 4,5V on both pins?

Ok, I have looked at the diagram and measured the following: Input 9V Power --> D100 --> 8,72V --> R101 (22k) --> 4,02V (VREF) --> R2 (470K) --> 0,54V --> PIN3 on IC1 After this three resistors there is not something in the neighborhood of 4.5V. Seams that the resistor values are not correct...

What should be the right values?

Ok, I pulled out IC2 and leave IC1 installed.

I bought a new opamp MC1458P and replaced the one inserted. Still no effect, but if I increase the gain on my amp I get a pulsating noise when the effect is on. Bypass works. So I measured once time.

I don't have another opamp. But I will go shopping tomorrow and I know there is a electronic parts reseller. Probably he will have one to sell :)

Thanks! I have now measured with the IC1 pulled out at the pins from IC1. The IC1 is MC1458P (this should be the same als LM1458). The IC2 is LM13700N. I have got the kit from a German distributor. Could this be the problem?

I am sure to used the correct jacks - I also tried it in the "wrong" way. Bypass is perfect. I have retouched all connection with my soldering iron. The "noise" is now not hearable, only a little rustle (what can be from the preamp of my poweramp). I also measured all connections with the ports...

Thanks for the information. I have made some pictures. 1.) The Bypass works 2.) The Power Connection is ok. LED is running and I measured 9V on the platine. 3.) The IC's - I think - are orientad correctly 4.) The transistors are oriented correctly 5.) The diodes are oriented correctly - I...

Hello, today I received my kit for the Waddle Box (DOD FX25 Clone). The documentation was very good and I build the parts together. When I tested the Waddle Box I can only hear a constant noise. I have looked at all and I think everything is build together as it should be. All parts are on the...