Mouthmeistor vero.

[digi2t]

Here you go;



Unverified, but I believe it to be correct, as per the perf layout. If there is a problem with it, let me know, and I'll correct it.

I think Uglyface + Mouthmeistor = Ludwig Phase II (?)

Or, just add the LFO potion of the Uglyface to this? It's a big beautiful world... ain't it?

[pinkjimiphoton]

awesome, bro.
i ordered a dual concentric 500k for the resonance controls..hope that's enough resistance!

won it on ebay for a lousy DIME!!

shipping cost me 10 buck....what a planet, huh?

[pinkjimiphoton]

hope to get the parts maybe next weekend, if all goes well over the week..it's about time i built something again bro!! lol

thanks for the vero, i'll do my best to verify it for ya.

[pinkjimiphoton]

dino, dumb, dumb question, but is this supposed to be looking THRU the strip side? cuz otherwise the holes are backwards from my shell...weird!!

if i'm wrong, it's ok, i'll just build it as if i am looking thru the vero from the strip side, so it'll fit in my shell right with no modification.

thanks again bro!!

[digi2t]

No such thing as a stupid question.... you know the rest  

The veros are always with the copper stripes down, or AWAY, from you. DIY just shows them to make it easier to see where the cuts are. So, looking at the vero, you're looking at the component side of the board.

As fo the corner mounting hole, I always mount my boards on stand-offs, on 2 corners. I arrange all my veros that way, and I take that into consideration when placing my components. I've found 2 stand-offs to be just fine. If you really need to have them in the opposite corners to the vero, let me know, and I'll reshuffle things for you.

Cheers bro,
Dino

PS. Thx for the cookbook

[pinkjimiphoton]

if you could reshuffle, that'd be phat, but no reason i can't just rotate the board, bro...so no worries, it's all good!! chips/pots are starting to arrive, so hopefully soon we'll be moving on some of the projects i've been putting off!


thanks for all brother!

[digi2t]

Here you my brother;



Again, unverified, so tread lightly. If I didn't mention it before, I clean the copper off the 3 x 3 mounting corners. Saves having any grounding issues when using metal stand-offs, or needing insulating washers. Personally, I clean them, AND use plastic stand-offs. Don't feel like tempting the devil.

BTW, I just scored this puppy;



A first edition Schaller Bow wow/yoy yoy pedal (no volume function).
Videos;
http://www.youtube.com/watch?v=EAkdn7KUQBo&feature=related,
and a later model (with volume function, same wah though), http://www.youtube.com/watch?v=uPveomdtIhQ&NR=1

Gut shot;


Cheers,
Dino

[pinkjimiphoton]

thanks bro!!

the bow-wow is a hip pedal, so don't gut that one!!!

i've got parts-a-comin'....this is gonna be a gas bro!!

thanks again!

[pinkjimiphoton]

houston, we gotta problem...

i built it as per the layout, but it doesn't work, and is hell to debug cuzza the layout bro....stuff is bounced all over and gets confusing to try and trace! it may be right but man, it's harder than chinese arithmetic to try and trace from the vero. i hate to have to re-do it, but looks like i'm gonna have to.

i'm assuming that it only uses two parts of the hex inverter, so i'll try and draw up something bone-simple, see what happens brother.

it's probably something stupid. irritating as hell tho!!

[pinkjimiphoton]

ok...got it workin'....too bushed tonite, but will post tomorrow. WEIRD effect!!!!

[digi2t]

OK, keep me posted. Let me know if any changes need to be made.

[pinkjimiphoton]

well, i don't think it was your layout, i think it may be the schematic. or it could be my own ineptness.

i'm gonna be tied up a few hours at least, but will post when i return and let ya know what's what...the good thing is it definitely works!!

but i think it does need 1 meg pots for the formants, and i suspect it needs 10 k for the sweep, rather than the 100k i used. i have a 10 k pot, but not exactly the right kind to use. needs a knurled shaft pot cuz of the kind of gear, and i didn't have that last nite.

the only thing i found i can elaborate on at this moment is the 1n4001 or whatever diode is either unnecessary, or backwards...i had to bypass it to get the effect to work.

at this point, i have the two halves of the stacked pot opposed, and neither grounded...makes a humongous difference. but it's weird...got formant at heel down, which morphs into a quite respectable wah by toe down. cool toy. but i want more formant, and suspect the 100k is giving me too much sweep, thus giving me wah as a side effect. i tried parallelling the wah pot with a 10k resistor to get it down closer to 10k from 100, but that didn't work out too well.

anyways..kid is off to the bus station for college, so i gotta went! more later bro!

oh yeah...one more thing...the mpsa18? the hotter the better...i used 715 hfe in mine, checked all for gain, and it likes 'em hot!

[digi2t]

BIG OOOPPPPSSSS on the diode. It should be stradling the pos. and neg. lines, next to C1, white band on the pos. side. The cut under where the diode is shown should be jumpered as well.

Major brain fart on that one, sorry. 

I'll fix them.

[pinkjimiphoton]

ok, deets...the layout works pretty much as is, but there's a few issues...

mine wouldn't run with the diode in the power supply as shown...so i bypassed it.

the gain control as shown in the layout (which matches the schematic) is backwards. the volume control is right.

the dual concentric stacked 500k pots aren't cutting it...i mean, they work, sorta, as wired, but don't really do much. at the moment i have them opposed, which gives a unique sweep where heel down gives formants much like a PII, that sweeps thru a very vocal wah that positively screams at toe down.

i'm suspecting this is because i used the stock 100k pot in the wah pedal, as i didn't really have a good match shaft wise in any of the 10k pots i have. i suspect the wah part of the sound is a side effect of too much resistance, and have a feeling a 5k or maybe even a 1k pot would give better formants, and sound more like toptop's demo...the sound in the demo is definitely in there, but only in about the first 10th of the wah pedal travel...which is why i suspect it's too much resistance at 100k...getting almost the same issue as the coloursound vocalizer!! very weird.

at the moment, i do not have the stacked pots grounded, so they don't do anything whatsoever. i'm toying with the idea of replacing with a pair of 1meg pots instead, and saving the stacked 500k for a guitar project instead. they could probably be omitted, believe it or not, with no effect on the circuit, as all they really do is act as "master volumes" for the formants in the pedal. so i think the stacked part is probably just cuz toptop had 'em kicking around. they certainly don't need to be stacked if someone doesn't feel like trying to track the part down. just saves a hole is all.

i'm gonna experiment a little this afternoon with disconnecting the wah pot, and trying 1k, 5k, and 10k pots to see if as i suspect that the 100k pot in there is why the formant aspect is kinda weak. if that helps, (seems like it may) then i may play with the pot and some resistors to see if i can get a switch hooked up for formants only, or formants plus wah, which is a cool sound, tho hard to get used to due to the formants presently being at the heel. i tried to reverse the wires to the wah pot and the formant pots, but it made virtually no real difference either way, other than making the wah pot wah backwards...more fodder as to why i think the bigger resistance of the 100k pot is sweeping past the area where the formant trajectories lie.

anyways...onwards and upwards...it works, hell of a job, dino and toptop both, and damn~ i tried to do a layout for vero and almost pulled out all my hair. great job brothers!!

[digi2t]

OK, here is the corrected layout;



Note the diode, and one less cut.

Sorry for the screw up, I must have done this one late in the day 

Lookin' gooood brother. Hope to hear it soon!

[pinkjimiphoton]

just tried it thru the amp without the headphones on, i like it a lot better that way...

i'll try and get a video up on youtube soon bro. kinda thinking this may be a neat project to modify a little with an lfo for each formant with it's own speed control, and then the wah to make it do it's thing...i have a feeling it would be pretty savage...or even better, an envelope follower! that'd be hip!

gonna put the cans back on, and try the smaller value pot to see if it matters...if it acts the same, or isn't improved on, gonna leave it as it is now...it's a really groovy little pedal!



thanks for the updated vero, will add it to my files bro...righteous!

[artifus]

kinda thinking this may be a neat project to modify a little with an lfo for each formant with it's own speed control, and then the wah to make it do it's thing...

http://home1.gte.net/res0658s/fatman/4069_lfo.html

...or even better, an envelope follower! that'd be hip!

http://www.techlib.com/electronics/bargraph.htm

keepin' it '69

[pinkjimiphoton]

hi arti,

thanks bro! yah, an envelope controlled formant filter would be hip as hell...thanks for the links, probably way above my newbe paygrade!!


i mean, only two parts of the six parts of the chip are used, so it'd probably be fairly easy i reckon?

ok...working on this box now...

i replaced the dual concentric 500k linear pot for two 1 meg linears.

HUMONGOUS difference..500k cranked was just starting to get into the formant region, here, i think 1 meg about nails it, tho i'd love to see what it would do with 2 megs.

now it's e-ewwwww heel down, and ooh-wahhhhh toe down.

gonna try the 10 k pot but truth be told, even if it "works" better i may leave the 100k just cuz it's such a hip sound.

[Fishface]

won it on ebay for a lousy DIME!!

shipping cost me 10 buck....what a planet, huh?

Quote of the week - thanks, man  xXx

[pinkjimiphoton]