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Topics - jambforthelamb

#1
Hey Guys!
I have an older version of the Cardinal Trem (non-tap tempo) that I would like to try a mod for. I've seen a couple of tremolos that have a second LFO that modules the rate knob so that essentially the rate speed will go up and down etc. I would love to mod the Cardinal to do this. Can I just build an LFO and wire it up to one of the lugs on the rate pot, or would it be more complicated than that? I'll likely try it either way, just wanted to put it out there to the committee XD.
Thanks!
-Kevin
#2
General Questions / PedalPCB Roboto "Mode" doesn't work
November 13, 2018, 06:23:34 AM
Hey all,
Recently finished up a Roboto from PedalPCB, and everything works but the "Mode" knob. Turning it in either direction has no effect on the sounds. The Volume and "Control" knobs both work as expected, and the sounds coming out are normal for a HT8950. Not sure if it's maybe an issue with the ATTINY or something else. I'll post the voltages from that below, please let me know if there's anything else you need from me.
Thanks!
-Kevin
ATTINY85 Voltages (with the "mode" knob turned fully counterclockwise).
1 - 3.2v
2 - 0.0v
3 - 0.4v
4 - 0.0v
5 - 3.2v
6 - 3.2v
7 - 3.2v
8 - 3.2v

#3
General Questions / Triton Delay Bypass Pop
October 04, 2018, 09:17:02 AM
Hey all,
A ways back I purchased a Triton delay PCB off of the board here from Culturejam. One issue I've ran into since building it is that it has a pretty significant pop when using the bypass switch (in both positions). Not sure where to start with this, but hoping to get it working as this is an awesome delay otherwise, but the noise makes it slightly unusable for me. I've done one modification of making the Tone trim an external pot, but it had the pop before I did that when it just had a trimmer on board. One of the "time" LED resistors has another one in parallel you'll see in the picture because they weren't the same brightness for some odd reason (it had the pop before I did that also just FYI). Gut shot below, let me know if there's any other info needed.
Thanks!
-Kevin
#4
General Questions / Tesseract Reverb Problem.
October 26, 2017, 11:23:33 AM
Hey All,
Got my Tesseract Reverb all done, and it's awesome! The only issue I'm having is that when I hit the tails switch to bypass I'm still getting some of the wet signal, but it does seem to be fainter. I implemented the pcb fix mentioned in the doc about connecting r27 to d1, and I believe I did it correctly. No major part substitutions that I can remember. Any thoughts on what I need to do? Here is a photo of the component side of the board.

#5
General Questions / Liquid Mercury Problem. Too Subtle
September 07, 2017, 07:28:40 AM
Hey All,
Recently just finished up a Liquid Mercury Phaser. Everything seems to be working control wise etc, but the phasing is pretty subtle compared to the demo videos, even at the more extreme settings and the bias nearly cranked. It almost sounds more like a modulated filter than a phase if that makes any sense. I used the Small Bear XVive VTL5C3 work-alike photocouplers, so I'm hoping that isn't the issue since they are 6 bucks a piece  :P. Not sure where to start with this one since everything else seems to be working, so any help/guidance would be much appreciated.
Thanks!
-Kevin
#6
Hey all,
I've been working on a Loophole that I'm building on a Haberdasher board. I wanted to add Jakefuzz's awesome mod to it after listening to some samples. The loophole itself works great, and the detune feature works as well, I'm just not getting any vibrato. Here is the build report thread where Jake talks about his completed version of this:
http://www.madbeanpedals.com/forum/index.php?topic=2467.msg19894#msg19894
I can't seem to find the thread where he goes over the mod in detail. I guess it may have gotten lost in some of the forum drops. Fortunately I saved what I believe to be his latest version of it so I'll post that here.

My only substitution thus far is a 50k reverse for the speed pot.  I used the ISD1020, not the longer record time chip, but I would assume that makes no difference.
Here are my voltages. For the testing I had the depth pot turned fully CCW.

Source = Boss guitar 9v supply: 9.5

2n5088:
E: 5.0
B: 5.0
C: 4.3

CD4093:
1: 0.0    14: 5.0
2: 0.0    13: 4.9
3: 5.0    12: 2.5
4: 5.0    11: 2.5
5: 0.0    10: 5.0   
6: 0.0      9: 0.0
7: 0.0      8: 0.0

Thanks for any and all help  :D
-Kevin
#7
Build Reports / Completed P.I.F. Firebomb
January 26, 2012, 09:13:05 AM
Hey All. Finally got my first Madbean board all done. I still have a couple ChunkChunks (waiting on decals), and a Gruntbox that needs parts. This is a pretty simple Firebomb with no mods, but one neat thing I did add is a clear pot and knob in the middle "volume" position, with a bi-color LED under it. One channel is Red, the second is Green, and when they are on together it's an off yellow. Enclosure is from PPP, and knobs are from Smallbear. No guts as of yet.

-Kevin