Wogglebug circuit

stolenfat · Posted: Sat Sep 13, 2008 10:23 pm Post subject:

big thanks for the resource julian

neandrewthal · Joined: May 11, 2007 Posts: 672 Location: Canada

Hi, my wogglebug is woggling alright, but the internal clock always stays at a constant speed regardless of control voltage or pot setting. I won't ask for troubleshooting help until I've done more in-depth testing, but I have a question before I continue. Could it be because I used NE555P instead of LM555N? Thanks.

ATOM · Joined: Sep 20, 2004 Posts: 48 Location: Norway

Posted Image, might have been reduced in size. Click Image to view fullscreen.

My two ghetto style wogglebugs.
Here's a sample:
http://home.no/atomatic/woggle.mp3

ATOM

TekniK · Joined: Aug 10, 2008 Posts: 1059

bugglebogglebuchlala

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coombster · Joined: Apr 22, 2008 Posts: 5 Location: Bristol, UK

received my parts kit from bridechamber but there was 3x 49,9k resistors missing. can i replace them by anything else as i fear my local hardware doesn't stock them ?

cheers
will

frijitz · Posted: Sat Nov 22, 2008 3:23 am Post subject:

You could (maybe temporarily) use a series combination such as 47k + 2.7k.

Very Happy

Ian

coombster · Joined: Apr 22, 2008 Posts: 5 Location: Bristol, UK

that sounds so crazy it might actually work !

so i should just solder them in line together and then just put the in place right ?

frijitz · Posted: Sat Nov 22, 2008 3:38 am Post subject:

Yep, that's it. The only possible problem would be if they needed to be high precision. You should preferably use 1% units for the 47 k's if you have them. But just to get the module working it shouldn't matter too much.

Very Happy

Ian

drapdap · Posted: Sat Nov 22, 2008 4:04 am Post subject:

No, its not crazy, i do that all the time, (if i don't find a special value,) resistors in series... Very Happy

Or just find a not-so-precise 50K that's just little off the specs.
i tend to find a lot of 49,9 when i need a precise 50k! Laughing

Measure them!!!

róbert

prophei · Posted: Sat Dec 20, 2008 8:15 pm Post subject:

mono-poly · Posted: Fri Dec 26, 2008 12:22 pm Post subject:

Does anyone got a frack layout?

sduck · Posted: Mon Feb 23, 2009 3:59 pm Post subject:

Sorry to resurrect this old thread....

So I started populating my second (of two) wogglebug pcb's, having foolishly sold my first one.

I also had the idea that I might want more boards eventually, and thought about learning the expresspcb/sch software in the process. In other words, entering the schematic into expressSCH and then creating a pcb layout in expressPCB.

I was curious if anyone has already done this - if I'm just repeating someone else's effort needlessly. Does anyone have the schematic entered into expressSCh, or eagle, or whatever and would be willing to share?

Also, does anyone know if there are any additional libraries for expressSCh tht would be helpful for synth pcb's?

ericcoleridge · Joined: Jan 16, 2007 Posts: 889 Location: NYC

There is at least one Wogglebug layout (for press n'peel) on the internet. I have a copy of it--it's a dual design--I beleive made by M. Verbos. But, are you asking specifically for an expressPCB design?

I also have one Wogglebug populated, and always had the intention of buying and building another, so that I could make a dual panel. I thought because Bridechamber was selling them that they would be continuously available...

sduck · Posted: Mon Feb 23, 2009 10:00 pm Post subject:

Yes, expresspcb. It's more of a learning project than anything else, but I figure if it works it'll be handy for those of us who just want a few boards for their low price deal. Just don't want to be reinventing the wheel if I can avoid it.

I wouldn't hold my breath - I've got a ton of other stuff on my plate, so to speak, so while I've gotten started on this, it could easily get back-burnered to death.

ericcoleridge · Joined: Jan 16, 2007 Posts: 889 Location: NYC

Well, if you're thinking of having some made, maybe you could just write the guy who originally offered the PCB. Maybe he's not interested in having anymore made himself, but wouldn't mind someone else doing a run. You've probably thought of this already...

BananaPlug · Posted: Tue Feb 24, 2009 7:49 am Post subject:

FYI, Makenoise (who made some Woggles like the one below) has a new version in the works with some new features.

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Makenoise Wogglebug

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fluxmonkey · Joined: Jun 24, 2005 Posts: 708 Location: cleve

fluxmonkey · Joined: Jun 24, 2005 Posts: 708 Location: cleve

here's the corrections i made to mark verbos' wogglebug layout. Red indicates traces that need to be cut; green is for traces that need to be added; blue is for a pair of jumpers to ground that need to be added. corrections are shown for one side of the board, the same changes need to be made on the other side as well.

bbob

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sduck · Posted: Fri Mar 06, 2009 10:31 am Post subject:

Ok, debugging time again. Second time around - the first one worked perfectly, this second one, not so much.

Everything's finished, except for that little jumper cap that's supposed to kick start the cluster knob. I tried the unit without that cap, just to see if it worked without it, and everything worked fine except for the cluster knob. So I attached a small 2.2nf cap as directed, just like I did before, only now the tone output is way lower, and the cluster knob still doesn't work. I then tried disconnecting the cap - still not tone output (although the other 2 outs work). As far as I know the tone (smooth) cv is working. Any ideas? Did I brap a chip?

sduck · Posted: Sun Mar 08, 2009 7:18 pm Post subject:

Ok, tried some things, the cluster knob is working now. Still nothing from the Tone jack. I'm sure it was working before my experiments with the small bypass cap, so I'm pretty sure I must have blown up a chip, but which one? I'm no good at reading schematics - I tried replacing the TL074, no change. All the wiring is good, the smooth cv out works, everything else is working. Please, any help is appreciated!

Luka · Joined: Jun 29, 2007 Posts: 1003 Location: Melb.

have you tried swapping the 4046s to see if one is kaput

sduck · Posted: Sun Mar 08, 2009 8:51 pm Post subject:

Yes, that's starting to be my prime suspect after poking around some more at the traces and squinting at the schematic and block diagram. I didn't do the neatest job of wiring layout, so it's probably easier to just order new ones and replace them than try to get them out intact and swap them.

xpmtl · Joined: Aug 10, 2007 Posts: 162 Location: Brussels, Belgium

hi all,

I'm trying to add the cgs led driver to the clock out but i got into trouble as the pulse seems inverted.

The led is bright all the time and goes off for a micro-second. Anyone got the same results?

Do I have to use an inverter or is there a simplier way to solve that?

Pulse looks like the first one in the image attached, for correct operation it should be like the second i think.

thanks

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6079smith · Posted: Thu Mar 26, 2009 7:41 am Post subject:

Did you use the LED driver with the diode instead of the second 100K resistor? They're designed for audio/bipolar monitoring but I stick them on (nearly) everything and they work fine...

Edit: Doh! Of course, they're for positive excusions of audio signals. Funny, I still remember using them somehow with negative voltages. I'll get back to you in a bit...

xpmtl · Joined: Aug 10, 2007 Posts: 162 Location: Brussels, Belgium

yes I tried with the diode, but it didn't changed the result much