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at antonis - BROWN? arghh, my eyes!!

haha. the LED is not there because none of them worked. and so that make sense if I was blowing each one. damn. I threw them back in the pile...

So, to confirm. I messed up the LED-R correct?

you need your led tester and all those leds back. test them, if they don't work, reverse the cnnections. still doesn't work? throw into the rubbish bin. and you always need a resistor in series to stop the led failing, quickly and permanently.

where's my cider?
haha. awesome. which ground wire?

that's a good question, but seeing as the ground wire isn't there, I can't answer. each jack on every build gets a ground wire, and then you don't need to worry if the case is grounding between the two, or if the paint is insulating them and causing symptoms like yours reported.
Hi there,
I hope you are all OK in these pandemic times. Hearing about the bigger problems on the radio, maybe you could help me with a smaller one.
I am trying to add an expression pedal input to a pedal. But however I wire it (in my last iteration I even switched all three poles by a 3PDT and soldered a pot to a TRS-Jack to exclude a faulty expression pedal), the sound is not nearly identical to the one I get with the internal pot (humm, buzz, distortion, all kind of dirt AND nearly no change).
I feel downright studip that not even a complete decoupling with a 3PDT works. I mean, really, isnít a voltage divider a voltage divider?

Hereís what I come from

Hereís what is not working

Building your own stompbox / Re: Double delay fun
« Last post by StephenGiles on Today at 09:11:39 AM »
Or you could buy a vintage Meazzi Echomatic!!
From just the pure elements of the power supply setup, no. But there did appear to be a set of diodes in there, but without really going into it hard, I couldn't tell if it were hard clipping of soft clipping. There appeared to be several TL072 surface mount opamps, and the diodes were close to them.

Personally, I would try and chase down everything around D2/D5 and Q2/Q3.

Do you have a 12AU7 lying around by any chance for a swap? I've been wanting to do something like this for several years, with a tube driven arbitrarily hard by an opamp. The 12AU7 is known to do well with low plate voltages.
Building your own stompbox / Re: MXR Dyna Comp
« Last post by whomeno on Today at 09:08:18 AM »
Building your own stompbox / Re: MXR Dyna Comp
« Last post by antonis on Today at 08:56:34 AM »

Read especially whatever refers on frequencies (e.g. H/LPFs..)
Building your own stompbox / MXR Dyna Comp
« Last post by whomeno on Today at 08:44:04 AM »
Would it be possible to modify a dyna comp to be used with a bass guitar?
If so what would need to be changed.
Building your own stompbox / Re: Pitch/Detune Warble Pedal
« Last post by patrick398 on Today at 08:23:46 AM »

Here's the latest schematic for reference
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