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Messages - cajone5

#301
A grounding issue somewhere would make sense... hm... Any reason I would get a redicution in voltage of a little over a factor of 10?

As far as the switch goes, I used a different switch wiring scheme actually... this guy...



It looks odd from the photo but here's how my switch is hooked up (lugs numbered from top left to bottom right, across then down)...

1 - Circuit Board "in"
2 - CLR from LED negative lead (not shown hooked up in the photo though, but it is now)
3 - Circuit Board "out"

4 - Input Jack Tip
5 - Ground (Input Jack Sleeve)
6 - Output Jack Tip

7 - Jumpered to 9 w/ null resistor
8 - Circuit Board "in"
9 - Jumpered to 7 w/ null resistor

So it's slightly rearranged but ultimately I think it's the same (functionally) as the madbean std. wiring diagram.
#302
Nope.  >:(

Is it possible the power is bleeding to ground somehow?
#303
I build it from the etched board at the bottom of this and may have found an error in that etch...

http://www.madbeanpedals.com/projects/Zombii/docs/Zombii_ver.5.pdf

Take a look at where the 9v connection comes into the circuit.  It looks like it runs up to lug 2 of the stability pot for the board on the first page and in the schematic but runs to lug 1 in the etched board at the bottom.  Going to try cutting the first trace and adding a mini jumper to lug two and see if that sorts it  ???
#304
OK I'm officially baffled. 

Remove all wires and checked the jack -- 9V.  Worked.  Jack is OK
Connected the LED -- 9V.  Worked.  No issue wiring the LED.
Finally, connect the last wire -- power from the board to the jack... 0.8V! Ahhh!  Does this mean there's a short on my board somewhere that's bleeding the power away?
#305
Yes, and yes.  Right now I don't even have the LED hooked up.  Just measuring voltage at the jack... So I'm going to unsolder the jack and see if I can plug it in and read across the terminals and measure 9v.  If not, I must have a bad jack.  If I do read 9v I'm not sure what I'll do... we'll see in a few minutes...
#306
So checked and rechecked and then realized (after comparing with my Zvex) that I'm almost certain that this is actually running at 0.8v.  It doesn't oscillate and some of the higher settings on the gate knob and lower settings on the fuzz knob don't pass much, if any, signal.  Has anyone ever had a power jack issue like this?  Apparently the circuit was tweakable enough to get some sounds out of it even with such a low voltage running to it.  Anyway, I'm going to pull the power jack, disconnect the wires and see if I can read 9v across the terminals with power plugged in to see if the jack is bad.  If it is, it gets replaced.  If it doesn't, well, then I try again with it, I guess.  Can the circuit cause less power to be seen across the terminals somehow?  I wouldn't think so, but it seems the folks here are much more knowledgeable than me so I'll wait to see if anyone weighs in...
#307
BTW here are some shots of the pedal as it is now...





I haven't re-wired the LED because I want to figure out what the heck is up with the measured voltage before I try again.  The purple wire will go to the + lead of the LED and then I'll run a CLR to the top-middle lug of the switch.

Hopefully someone here can set me straight...  Bueller?
#308
*** I've done some more checking and think I've sorted it (see post 3) -- would love to get some feedback if anyone's had a similar issue before -- Thanks ***

I'm about to loose my freakin' mind.  I've got my zombii up and running and for the life of me I cannot get the LED to work.  I am using haberdasher's (sp?) board and, like always, he does fantastic work.  However, for some reason I couldn't get the LED to light when using the pads on the board.  No bother.  I can wire it off board... or so I thought...

I hooked it up per the usual (see the standard madbean diagram here... http://www.madbeanpedals.com/tutorials/downloads/StandardWiring_MBP.pdf

Nothing.

Flipped the polarity incase a momentary lapse of sanity occurred and I forgot how to read the polarity of an LED... still nothing.  So i start poking around and measuring voltages... hmm... voltage across the LED is only like 0.8v... weird... well certainly I must have done something dumb.  So I go and double check the power supply... yep -- about 9v tip to sleeve of the connector from my PP2+.  Oh, and the effect sounds killer and works marvelously in both bypass and with the effect on.  So i measure voltage across the two pads on the 9v tap... 0.8v!!! WTF!?

How the hell can the voltage be 9v on the power supply and 0.8 directly on the other side on the pads of the 9v tap?  I even pulled another tap out and made sure that the laws of physics still apply.  Yep, 9v across the pads of a fresh one that's not in the circuit.

So seriously, can someone try to make some sense of this???  I mean I'm pretty sure this thing is defying the laws of physics right now...

#309
What circuits are in there?  I see the Chimera board on the end, but what are the others?
#310
Build Reports / Re: Apis. Klon in a 1590a
September 14, 2012, 10:26:00 AM
Absolutely stellar work.  Even with your board I don't think I'd be able to successfully fit one of these into that enclosure :)
#311
Wow  :o  that looks awesome!
#312
Build Reports / Re: 1. Wolfshirt 2. Cosmopolitan
September 14, 2012, 10:11:24 AM
It sounds great  :D  Thanks for all the kind words and I recognize quite a few names here from TGP, D*A*M and BJFe forums  ;)

I honestly preferred it with the 2N3904s as it had more clarity, less gain, and a slightly less pronounced octave.  As it's shown there it  has NOS 2N3565's which are wilder and have more gain.  I built it for a friend and he wanted wild so he went with the NOS ones -- that's also why it actually looks good inside instead of my usual mess...  I have another board which I plan to build up for myself in the relatively near future and have an email out to another friend/builder about help with an enclosure since I can't do drilling myself. 

Oh here is another one I built up from a haberdasher board...





It was a tight fit but I made it work.  I need to rewire a couple things -- namely the volume (and gain) I think I wired in reverse.  Also plan to swap the volume pot out for a linear taper one as the volume jumps up pretty quickly.  I tried to go with the AC176 for Q3 (?) but didn't like the sound although I don't think I had the right hfe because it sounded pretty gated and like it needed to be pushed harder.  Swapped it out for a 2n2222 and man I really dig it!  Oh and the added 6th control is on R2 which I decided to add based on some info from Marc @ Skreddy.  He said replacing the 100R with a 56k gave him better tones with humbucker equipped guitars so I added a 100k pot with a 100R resistor in line. It's kind of like a texture control of sorts.  I'm digging the added versatility although with all the other EQ options available on this pedal it seems like a bit of overkill.   :o
#313
Build Reports / 1. Wolfshirt 2. Cosmopolitan
September 13, 2012, 07:06:53 PM
Not my first madbean build and definitely not my last.  Thanks so much for providing these boards, instruction and information to paint-by-number folks like me  :D

Here is a wolfshirt I built for a friend who asked for a FTM clone.  It sounds AWESOME and has inspired me to build one for myself.  I can't wait!





#314
General Questions / Board Fab
September 13, 2012, 12:46:03 PM
Hi,
I am helping out with a project and have a friend laying out a board for it.  He says that he will be sending me "Gerber Files" for the layout.  I need to get about 30-50 boards fabricated and I was wondering if someone could point me to somewhere that would do this quantity at a reasonable price.  Please let me know if you have any recommendations.
Thanks so much for your help!  :D
Cliff
#315
Build Reports / Slow Loris Build
May 03, 2012, 09:19:45 AM
Finished this guy on 4/20 but never took photos until now   ???





It sounds killer -- I highly recommend the Madbean Slow Loris to the Rat lovers out there.

Yep -- I'm whoring this one out all over the interweb today!  :D