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I hear the swirling noise change in the white noise coming through the amplifier, but there is still not guitar with it. There are also slight cracks and pops when testing.

IC 1                                     IC2                                  Q1                  Q2               
1. 3.51v     8. 9.26v           1. 3.5v     8. 9.26v           G 3.5v           G 3.5v
2. 3.51v     7. 3.51v           2. 3.5v     7. 1.37-8.6v    S  3.5v           S 3.5v
3. 2.31v     6. 3.51v           3. 3.5v     6. 3.8-5.8v       D .8-1v          D .8-1v
4. 0v           5. 3.5v             4. 0v        5. 3.3-5.7v

I found these pictures, which from the looks of it I am guessing requires me to change the way my transistors are pinned. Which also means the documentation was not in the least bit helpful if I am to take it literally that the transistor could be turned around 180 degrees in order to function.

I couldn't find a transistor wiring diagram, but here are the IC and transistor voltages.

IC1
1. 3.5v     2. 9.19v
3. 3.5v     4. 3.5v
5. 3.5v     6. 2.37v
7. 3.5v     8. 0v

IC2
1. 3.5v     2. 9.26v
3. 3.5v     4. varied from ~1.38v-8.5v
4. 3.5v     6. varied from ~3.8v-5.8v
7. 0v        8. varied from ~3.2v-5.6v

Q1
1. ~1v
2. 0v
3. 3.5v

Q2
1. ~1v
2. 0v
3. 3.5v

I hesitate to switch the transistors as I am hearing that swirling warbling noise with the white noise signal coming through the amplifier. I am just thinking it is the circuit of the input jack not getting to the effect.

Is there a way I could test it with just a couple alligator clips? Otherwise I'll go out and get a breadboard. I didn't understand how to test it before, but after reading how to do it, I think the switch is okay because there is continuity between each of the three center poles and each side of the top or bottom.

In the instructions it says if I use the 2N5952 transistor that I would have to put them in backwards which I did.

Also, since that stomp switch looks pretty thrashed, take a DMM and check for continuity between the lugs. Is there continuity between the middle rows and the outside lugs on one side and not on the other. Then hit it again and does that reverse.

I was able to verify continuity in all lugs EXCEPT the upper left and middle lug I had no continuity in either position. Is this bad? I did listen on my amp and when I switched to one of the switch positions I WAS able to hear some warbling in the slight white noise coming through, but for some reason my guitar is not incorporated in the signal.

Unless you're using different transistors aren't those in backwards?

I used the alternative transistors as they were the only ones available on mouser.

Thanks for the support. I probably should have bought a couple different colors of wire to help with that. The noise has been eliminated after switching tip and ground on the output. However, I still do not get a signal out of the amplifier in either channel and my LED does not light up.

I am using page 5 of this diagram as the reference for my pedal http://madbeanpedals.com/projects/Smoothie/Smoothie_2015.pdf . Are you saying my switch is still upside down? This is possibly the worst documentation I've ever had working on a project. I've successfully completed two other more expensive electronics projects with no issues. I am really not impressed.

That's the idea, but the switch is wired wrong. On the projects page of madbean pedals you'll find the standard wiring diagram.


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Can you please elaborate? I have had this diagram in front of me the entire time.

The noise seems worse if that makes any sense. I rotated the switch clockwise 90 degree and re-soldered everything after drilling holes with a dremel tool.

Just depends on your starting point but rotate the stomp 90 degrees or 1/4 turn and do it that way.


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I rotated the switch so that the Pin #1 was located in the upper right hand corner. I still get nothing but noise on either flip of the switch.

For starters your 3PDT switch is wired wrong if you followed the madbean diagram. The lugs need to be oriented horizontal when wiring everything up.

So pin 1 would be in the upper right hand corner?

I just finished putting together my Smoothie pedal, however I'm getting nothing but noise on both settings of the 3DPT switch. On one switch there is some noise and the other slightly less noise. I believe I have everything wired as per the diagram, but I guessed on the jacks because it seemed obvious what would have to be tip and sleeve. I must be doing something wrong with the switch to be getting noise on both ON and OFF positions, but it all looks correct to me. Do the attached images show any egregious errors on my part? Any help is appreciated. Thanks.