'LIGHTWAH'

[Valoosj]

anyone fancy a weekend 1590b pcb designing project?...

This could fit in a 1590A 

[arma61]

Hi there!

I've re-checked the .sch file and amended some values entered wrong. Connections look good, here is the right one (I don't know while "_002" has been added ! just delete that and save as .sch)

http://www.aronnelson.com/gallery/main.php/v/Schematics-etc/LIGHTWAH_sch_002.html

.....and here is the PCB layout   , not verified... not built.... could be improved.... and whatnot... that's it (same here, rename it/save as .pcb)


http://www.aronnelson.com/gallery/main.php/v/Schematics-etc/LightWah2_pcb_001.html


Please let me know if some of you guys build it, so we can state it's verified

......and I will be enormously grateful if someone can make one for me        (I can only do handdrawn atm......)


cheers m8s
Armando

[deadastronaut]

wow..you guys have been busy!..went camping for the weekend...got soaked..and then burnt...the whiskey and beer helped though!...

@gurner: yeah i know, i found my opamp symbol afterwards...i know next time..
thanks for the compliment too.....learn your modes...makes playing a lot better and more fluid..!..heres a quick video i did on the modes...with a backing track..ok..
http://www.youtube.com/watch?v=TRQPIPVp4bo

@yorick:...squeeze it in....

@artifus: what section of the nurse quacky is the envelope detector?...im dumb, but that would be a great feature to add while were at it at this stage..
and how to implement it?...
is it just the bottom section...?..to the led part?..

i also looked at those beam IR sensors...still affected by 'ambient light though arent they?....hmmmm...



@askwho: foot ldr is on box top:

1 lfo led is on box top...other is wrapped to lfo ldr
1 darklight led goes on top...other is wrapped to footwah ldr.....the led on top will show the wah sensitivity...glow brighter as you go nearer ok!...
tranny : 2n3904 npn.

@arnoud: wow, i didnt mean it..
nice work man, i'll have to download express pcb again, to see it... ...but thanks for putting the correct symbols in there...nice one!.

as for pcb, i really like the idea of the 'envelope detector dooby' that artifus said...from nurse quacky...that'd be a great addon...
so maybe hold fire on that just yet!...

and yes i like my guitar tuner too....its very reliable!...

ps: i'll knock up a pcb for you ok!...no problem.

[deadastronaut]

whooohooo....just got my 'encapsulated ldrs'...nice thick plastic cover...be cool on the box..easy to fit too...drill a hole and glue/epoxy it in.

its got a dark plastic underneath too...no light coming in there...nice...gonna try em out today...might be too big,might let too much light in,  might not...but protected for sure!..

http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=300554693653&ssPageName=STRK:MEWNX:IT

[artifus]

what section of the nurse quacky is the envelope detector?...im dumb, but that would be a great feature to add while were at it at this stage..
and how to implement it?...
is it just the bottom section...?..to the led part?..

yup. up to the tranny. here's a couple of other ways of doing it: seamoon 440

and some reading: The Technology of Auto-Wahs / Envelope-Controlled Filters

[deadastronaut]

cheers artifus.

hmmm...i built the nurse quacky a long time ago...it wasnt sensitive enough to quack the top  B and E strings as i recall...its sitting in dust unboxed...and never will be!..

anyway if we went down this route it would be a 7 knob pedal ..

those others look interesting though...especially the seamoon...hmmm...nice n small...so that would be the bottom section up to the  tranny too?..



@arnoud..couldnt open your files...i downloaded express 

[arma61]

@arnoud: wow, i didnt mean it..
nice work man, i'll have to download express pcb again, to see it... ...but thanks for putting the correct symbols in there...nice one!.

I think u r talking to me!, yup, unlike you, my weekend plans changed, so I had to stay at home!!

as for pcb, i really like the idea of the 'envelope detector dooby' that artifus said...from nurse quacky...that'd be a great addon...
so maybe hold fire on that just yet!...

ok, the biggest part is done, so no problem to add something there!

and yes i like my guitar tuner too....its very reliable!...

 

ps: i'll knock up a pcb for you ok!...no problem.

thx m8, really appreciated!!

[deadastronaut]

yep sorry armando....i was talking to you!..

i couldnt download ya files ?

[arma61]

@arnoud..couldnt open your files...i downloaded express 

Amando is my name, please!! ( I know... I know... whisked and beer on the weekend!!)  LOL  LOL  LOL  LOL



you need to save as .sch and .pcb files, or rename the extension after save, don't know why this time an underscore sign has been added.

[deadastronaut]

ha ha...sorry man...jet/camping lag i guess!...

ok i'll give em another go!...nice one 'ARMANDO'....

[deadastronaut]

armando:

i just printed out your pcb...some of those pads are really close to each other...almost touching..

round R1 and R9...especially...any chance of making the gaps a tiny bit wider..(ive never used express)..and would you say this is pretty much sorted ?...i know you cant say verified, but as good as?....logically wise!.

if so i'll give it a go...its a good size!..cheers rob.

(i got your name right this time...


edit: ahhh made the traces thinner..cool. that was easy..

[arma61]

Great! glad you get it sorted Rob!

layout should fit a 1590B vertically.

yes, logically wise all nodes are checked against the schemo (you know .pcb file is linked to .sch file, so once you click on a component's pad all the components' pads connected are highlighted).
So if you checked my schemo with your and it's ok, then the PCB's connections are ok, though I didn't follow any PCB-making rules (studied them in early 70s, cannot recall one!!  )


Ciao

[deadastronaut]

cheers armando....

i'll go over it a bit more...and try and visually verify it...(i looked at a few tutorials on express)

i'll knock up a couple of pcb's if it works fine, and  ill send ya one ok...ciao!...

i'll get back to ya ok.


edit: ahhhh...i see youve designed it for an 071....hmmm...i only have 072's...bummer..!

[arma61]

cheers armando....

i'll go over it a bit more...and try and visually verify it...(i looked at a few tutorials on express)

i'll knock up a couple of pcb's if it works fine, and  ill send ya one ok...ciao!...

i'll get back to ya ok.


edit: ahhhh...i see youve designed it for an 071....hmmm...i only have 072's...bummer..!

what!! you don't have....  one... just one 071!! is like a guitarist without a pick!! look at your bin you may have and old Dist+ or a DOD250 laying there!!    
















there you go m8!! a 072 version (not verified!)

http://www.aronnelson.com/gallery/main.php/v/Schematics-etc/LIGHTWAH072_sch.html

http://www.aronnelson.com/gallery/main.php/v/Schematics-etc/LightWah072_pcb.html

i'll knock up a couple of pcb's if it works fine, and  ill send ya one ok...ciao!...

i'll get back to ya ok.

greatly appreciated!!


Ciao
Armando

[deadastronaut]

no i havent...

nice one armando...your a star!...

[deadastronaut]

i had to stick a ground symbol on the bottom of the 'foot' ldr...my mistake..

its sorted now!..

[arma61]

no i havent...

nice one armando...your a star!...

[arma61]

i had to stick a ground symbol on the bottom of the 'foot' ldr...my mistake..

its sorted now!..

what do you mean by that, in the dark/light section 'foot' ldr is going to ground iso to the base of Q1 ?

[deadastronaut]

i have the darklight on a tiny breadboard 'seperate'

it wont work unless that emitter of the npn is grounded as well.(jumpered to ground).


the emitter, and the bottom of the ldr have to be grounded...sorry its early, need another cup o tea...

whats 'iso'..?

[arma61]

don't get it, picture or sketch please (me so noob!)!!     


early???, it's 2pm here, 1pm on your side!!! c'mon!   


iso, ''instead of''