Author Topic: TREMMY TREMOLO  (Read 59439 times)

duck_arse

Re: TREMMY TREMOLO
« Reply #160 on: July 01, 2014, 10:39:42 AM »
svf or srv?

deadastronaut

Re: TREMMY TREMOLO
« Reply #161 on: July 01, 2014, 11:52:46 AM »
both probably.. :)

ok,  a little issue has arisen, (as always)

i tried this with the xrock in front through my amp earlier, and then retested through my DI/mixer..

what it is , is this..

when my guitar volume is fully off i'm getting a (tremolo) induced oscillation (not tick) ...when i turn my guitar up slightly it fades off...

here's a clip of what i mean....xrock / tremolo......then added filter.....

https://dl.dropboxusercontent.com/u/7464107/noiseybugger.mp3

hmmmmmm.....ideas?..

updated schemo:

« Last Edit: July 01, 2014, 12:01:00 PM by deadastronaut »
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samhay

Re: TREMMY TREMOLO
« Reply #162 on: July 01, 2014, 05:37:03 PM »
The LFO is probably throwing quite a lot of noise onto the ground and/or +9V supply - they do that. Your xrock uses high gain discrete transistor stages, which will amplify power supply noise.
You could add more filtering to your xrock - perhaps multiple resistor/cap combos - and/or hope it gets better when you box them up.
I'm a refugee of the great dropbox purge of '17.
Project details (schematics, layouts, etc) are slowly being added here: http://samdump.wordpress.com

deadastronaut

Re: TREMMY TREMOLO
« Reply #163 on: July 02, 2014, 05:39:40 AM »
cheers sam,

yep it was the xrock, i tried  my spitfire on it, (which i had to claw back from a friend ::)) totally fine...no issue at all so far.. 8) 8) 8) 8)

so, for fun i might actually try a SVF on it while i'm at it....

i'm trying to reach page 104 to match the trem input cap.. ;D  edit ( which i notice i missed on schemo)  ::)
« Last Edit: July 02, 2014, 06:49:52 AM by deadastronaut »
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https://deadastronaut.wixsite.com/effects

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samhay

Re: TREMMY TREMOLO
« Reply #164 on: July 02, 2014, 07:16:57 AM »
Fair enough - add some/more power filtering to the xrock (and put it in a nice metal cage) and you should be ok.

SVFs are really cool, but this is going to cost you another 2-3 op-amps. Do you want the option of HP, LP and BP outputs?
Might as well throw the kitchen sink in and do envelope control of the LFO rate and/or depth. That aught to keep the thread going for a bit longer too.
I'm a refugee of the great dropbox purge of '17.
Project details (schematics, layouts, etc) are slowly being added here: http://samdump.wordpress.com

deadastronaut

Re: TREMMY TREMOLO
« Reply #165 on: July 02, 2014, 07:26:26 AM »
sorry getting mixed up...3 more opamps no way.. :icon_eek:

i mean the Q&D VCF...i messed with it on breadboard before and stripped away bits for uber simplicity.  ..i still have my experiment notes/schemo..

i remember i had a high and low version...


http://www.diystompboxes.com/smfforum/index.php?topic=89022.0;prev_next=next


saying that, i'm pretty happy with how it is at the mo really....see how i feel. :)
« Last Edit: July 02, 2014, 07:28:41 AM by deadastronaut »
https://www.youtube.com/user/100roberthenry
https://deadastronaut.wixsite.com/effects

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deadastronaut

Re: TREMMY TREMOLO
« Reply #166 on: July 02, 2014, 10:00:52 AM »
right that's it...i'm done. i'm happy with it. 8)

here's a layout ive been working on for 1590bb

5 pots / 3 switches.. i'm not using onboard pots as i want to be able to shift them about.. and the 3 switches will hold the board n place too..

my pedal layout will be like this : switches at the top, to avoid kicking.

pot order:  trem speed / vol  / trem depth.
                     filter speed   filter depth

   -  -  -
  0  0  0
   0  0  

just need to finalize pot values...




« Last Edit: July 02, 2014, 10:10:02 AM by deadastronaut »
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https://deadastronaut.wixsite.com/effects

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duck_arse

Re: TREMMY TREMOLO
« Reply #167 on: July 02, 2014, 10:14:09 AM »
your above circuit diagram is missing C14 at "I" on the board. I'm assuming this is input dc blocking?

deadastronaut

Re: TREMMY TREMOLO
« Reply #168 on: July 02, 2014, 10:15:06 AM »
yep i spotted that earlier...sorted..  ;)
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samhay

Re: TREMMY TREMOLO
« Reply #169 on: July 02, 2014, 11:01:16 AM »
Looking good.
I'm a refugee of the great dropbox purge of '17.
Project details (schematics, layouts, etc) are slowly being added here: http://samdump.wordpress.com

deadastronaut

Re: TREMMY TREMOLO
« Reply #170 on: July 02, 2014, 11:53:01 AM »
cheers sam, i'm still getting used to eagle really..

its a bit involved , but worth the brainache to have a nice easy board to populate etc..

i just got sick of cutting pcb, printing, ironing,  etching, drilling ..the dust is just plain nasty...plus i only have a tiny space to work in

so my tools always have to be put away...i don't have the luxury of a nice workshop... :'( ;D
https://www.youtube.com/user/100roberthenry
https://deadastronaut.wixsite.com/effects

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samhay

Re: TREMMY TREMOLO
« Reply #171 on: July 02, 2014, 12:15:34 PM »
I know exactly how you feel Rob - I expect many of us in the UK (and Europe) are in the same boat.
Where are you planning on getting the boards made?
I'm a refugee of the great dropbox purge of '17.
Project details (schematics, layouts, etc) are slowly being added here: http://samdump.wordpress.com

deadastronaut

Re: TREMMY TREMOLO
« Reply #172 on: July 02, 2014, 12:22:44 PM »
i'l get em done at  seeed , i like the green pcb.. 8)

they are reasonably quick too...around 2 weeks roughly give or take a day or 2..3.. which is just long enough to get me thinking of another 100 page project.. ::)
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deadastronaut

Re: TREMMY TREMOLO
« Reply #173 on: July 02, 2014, 01:46:01 PM »
final clip...just showing the range of sounds etc..

https://dl.dropboxusercontent.com/u/7464107/tremshifterrange.mp3
https://www.youtube.com/user/100roberthenry
https://deadastronaut.wixsite.com/effects

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WhiskeyMadeMeDoIt

Re: TREMMY TREMOLO
« Reply #174 on: July 02, 2014, 02:04:10 PM »
Sounds fantastic!  I'm down for a board when / if you want to sell any.

deadastronaut

Re: TREMMY TREMOLO
« Reply #175 on: July 02, 2014, 02:08:14 PM »
cheers man... yeah i'll do a few. after ive built / tested it.  :icon_cool:
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https://deadastronaut.wixsite.com/effects

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bluebunny

Re: TREMMY TREMOLO
« Reply #176 on: July 02, 2014, 02:23:14 PM »
. . . just long enough to get me thinking of another 100 page project.. ::)

I'm not building this until we're at least up to page 26.   >:(   It's not a proper AstroProj unless I've changed jobs twice and grown a ponytail down to my backside.   ;D
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deadastronaut

Re: TREMMY TREMOLO
« Reply #177 on: July 02, 2014, 02:27:54 PM »
 :D... sounds about right.


i'll try harder to piss everyone off with my lengthy projects in future...honest, ;D
https://www.youtube.com/user/100roberthenry
https://deadastronaut.wixsite.com/effects

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John Lyons

Re: TREMMY TREMOLO
« Reply #178 on: July 03, 2014, 12:27:46 AM »
Sounds good Rob.
I'm in for a couple PCBs when
you get to them, please.
Basic Audio Pedals
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Keeb

Re: TREMMY TREMOLO
« Reply #179 on: July 03, 2014, 06:54:39 AM »
Great circuit as always!

I might breadboard this to try it out but solely based on the soundclips I'd be down for a board (or two if you'd rather do pairs).