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Messages - Ricotjuh

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1
General Questions / Voodoo Lab/DMC GCX audio switcher
« on: February 05, 2021, 03:52:26 AM »
Maybe silly question, but does anyone own a Voodoo Lab/DMC, GCX audio switcher?
I am working on a DIY Looper/switcher where I want to use the concept of the Looper/analog part from the original, and the digital control is DIY.
The only thing I am not clear yet, is the component data of the capacitor and resistor that is used as an RC network on the coil.
So if anyone has this switcher and has the ability to unscrew the cover, would you be so kind as to take a close-up picture of it? So that I can clearly read the resistor values and capacitor value. And if it is also possible, also photo of the transistor, then I get it right.

2
Build Reports / Re: BOSS CE1 PROJECT: MN3002 or TDA1022P: DOC UPLOADED
« on: December 31, 2020, 02:14:45 PM »
That looks good. Is this just the exact copy described earlier in the topic? Or does this differ from what has been discussed here?
Are you willing to share your experience and schematic? So that we can all learn something from it?

3
Build Reports / Re: Eoo3: Programmable Looper/Switcher/Midi Controller
« on: December 29, 2020, 08:45:16 AM »
I just got a response from Musikding that they expect to have the housings back in stock from mid next week.

4
Build Reports / Re: Eoo3: Programmable Looper/Switcher/Midi Controller
« on: December 27, 2020, 08:11:08 AM »
Does anyone happen to know where in Europe (I live in the Netherlands) you can order the housing as indicated in the description?
It concerns the kk-80x40 from Rose Krieger. I know musikding normally has these lying around. But it is currently sold out.

5
Build Reports / Re: BOSS CE1 PROJECT: MN3002 or TDA1022P: DOC UPLOADED
« on: November 14, 2020, 03:20:56 PM »
Most parts are on it. Just wait for the Bourns potentiometer and some jumpers, and then the testing can begin.

6
General Questions / Boss CE-2W schematic or gutshots someone?!
« on: November 02, 2020, 04:19:38 PM »
Anyone have more technical information about the Boss CE-2W? I am very curious about the mods on the standard CE-2.
So does anyone have a schematic or gutshots of this pedal?
Or maybe someone has this pedal and can take gutshots of the PCB? I am very curious about this.

7
Build Reports / Re: Small Clone and Small Stone builds
« on: October 30, 2020, 02:44:34 AM »
Thanks man.

8
Build Reports / Re: BOSS CE1 PROJECT: MN3002 or TDA1022P: DOC UPLOADED
« on: October 30, 2020, 02:30:38 AM »
Okay, I received V2.0 yesterday.
What I experienced during my first test with V1.0 is the number of wires that need to be soldered to the potentiometers. All this has to be concealed in the rather tight housing. So I made a piggyback board that slides onto the main PCB.
I made 2 versions. V1.0 is for my own fabricated PCB. This only consists of 4 potentiometers like the original from V1.0.
But because this PCB differs slightly in terms of component placement compared to the DFX print, I also made a version 2.0.
This fits completely on the DFX print and makes it possible to apply 4 buttons, or the modified version of 5 buttons. (extra chorus depth knob). If you do not want to use this option, place the level button on the most right position and only transfer Jumpers 1.
If you do want to use the 5 button mode, then make all Jumper 2 connections and then the level knob moves down and the chorus depth knob comes to the far right.
The trim pot is still accessible.
The only wires you need to solder are the input and output jack and the 9V jack.
When I receive these, I will continue testing.

9
Build Reports / Re: Small Clone and Small Stone builds
« on: October 29, 2020, 12:13:26 PM »
Thanks for the nice comments. As for the trimmer, you only have to set it once, or do you experience that it expires over time?

10
Build Reports / Small Clone and Small Stone builds
« on: October 28, 2020, 01:54:16 PM »
This project has been at a standstill for a long time, but this week I have just finished.
These are the Small Clone and the Small Stone. Built in the past with Tonepad PCBs. Now redrawn with all components on the PCB. This means no more loose wires are soldered. With the exception of the 9V power supply. This comes through a connector on the PCB.
Both PCBs fit exactly in a type B housing. Without a 9V battery, but I don't use it anyway.
The Small Clone works properly.
The Small Stone has a few issues. However, at a high Rate I hear an LFO tap. I was able to reduce this by placing a 1uf capacitor over input 2 and 3 of ic5.
In addition, there is an audible volume difference when I switch the color switch.
Which is strange when you consider that this should only affect the feedback loop. This changes the phaser operation, you should get a more extreme phasing sound.
This also happens, but with some sort of volume drop.
Do more people have problems / experience with this?


11
Build Reports / Re: BOSS CE1 PROJECT: MN3002 or TDA1022P: DOC UPLOADED
« on: October 19, 2020, 01:58:47 AM »
I now have new BBD chips. Also ordered PCB V2.0. I expect to receive it this week. Then rebuild the whole again. And then test again. To be continued.

12
Build Reports / Re: BOSS CE1 PROJECT: MN3002 or TDA1022P: DOC UPLOADED
« on: October 10, 2020, 04:28:04 AM »
Hello .. thanks for your response.
My feeling says it is a grounding problem after all. But I don't measure crazy things in that area.
As for the power supply, I now also test with a 9V battery (2 parallel). And even then the problem continues to arise. And I can't get a cleaner power supply.

13
Build Reports / Re: BOSS CE1 PROJECT: MN3002 or TDA1022P: DOC UPLOADED
« on: October 07, 2020, 04:46:21 AM »
The gain in previous post seems to be correct.

Just took another measurement, and then you can clearly see that the supply voltages dance with the chorus / vibrato effect.
In this video is measured on Pin 8 of IC2. This is the + 14V. This is the AC voltage on the 14V. You can clearly see that the AC signal responds to the effect.


In the next video I have drawn out the time base and zoomed in further on the signal.
The yellow channel is -14V (pin 4) and the blue channel is + 14V (pin 8)
I have yet to find out where this came from. All help and tips are of course welcome.

14
Build Reports / Re: BOSS CE1 PROJECT: MN3002 or TDA1022P: DOC UPLOADED
« on: October 06, 2020, 01:00:47 PM »
I have now taken up this project again.
I started measuring with the audio probe, but I quickly picked up noise within the pedal. And after the BBD, this noise is merged with the "effect" and you can finally hear that.
So first find out where that noise comes from. And then I immediately come to the next point that I have my doubts about.
There is an amplifier circuit around IC2. However, I am measuring a very high gain here. Namely 1.5Vpp on the input (Pin 3). And almost 30Vpp on the output (pin 1). This is a gain of 20x. This seems like a lot to me. Or is this actually necessary to get the sometimes mentioned headroom? I can also imagine that every bit of noise that is there is also greatly amplified ..
I'd love to hear what you think about it.


15
Build Reports / Re: BOSS CE1 PROJECT: MN3002 or TDA1022P: DOC UPLOADED
« on: October 02, 2020, 09:37:35 AM »
Now I come across this video:

The same pedal can be seen here. Here too I hear a lot of noise. Is that with you too? Still troubleshooting but can't find the problem yet.

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