Catalinbread - Dirty Little Secret  [traced]

General documentation, gut shot, schematic links, ongoing circuit tracing, deep thoughts ... all about boutique stompboxes.
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pietro_moog
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Post by pietro_moog »

so we don't have a vero layout for now?

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Nicht Bernd
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HHR18
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Post by HHR18 »

Nicht Bernd wrote:http://www.sabrotone.com/?p=133

Harald has!
Looks like it's for either version 1 or 2 and not the MKIII. Don't think it's that hard to change it to match the schematic of the DLS MKIII though.

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biglouis
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Post by biglouis »

I'm working on a pcb layout for the MKIII.

I will post the layout here soon as possible.

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Nicht Bernd
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Post by Nicht Bernd »

[/quote]
Looks like it's for either version 1 or 2 and not the MKIII. Don't think it's that hard to change it to match the schematic of the DLS MKIII though.[/quote]
You just have to ask him to do MKIII...

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mganzer
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Post by mganzer »

I remake the schematic in eagle. i dont know how is the conection of trimmer... :scratch: anyone help?
Double check on components name and values already made...
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dlsmk3schema.png

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loylo
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Post by loylo »

There is still an mistake. Have a look at the top of page 17.

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mganzer
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Post by mganzer »

sorry, i cant see the version 1.1! :slap:

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Ice-9
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Post by Ice-9 »

mganzer wrote:I remake the schematic in eagle. i dont know how is the conection of trimmer... :scratch: anyone help?
Double check on components name and values already made...
connect lug 1 and 2 of the trimmer together.
It's fairly straight forward, if you want to start it , press start. You can work out the rest of the controls for yourself !

No silicon heaven ? preposterous ! Where would all the calculators go ?

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mganzer
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Post by mganzer »

Thank you loylo and Ice9
Guys, this is my very very first layout. Is only lead mode and sorry for the 4 jumpers...
Any constructive critcizmm is welcome. If everything is ok feel free to test. I'm out of fets to do by myself. :x
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dlsmk3leadv1.pdf
(1.26 MiB) Downloaded 399 times

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mmolteratx
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Post by mmolteratx »

Couple of things I see immediately. Your high-z input trace is really long. That's really bad practice, as it's very susceptible to noise. It's basically an antenna and the shorter you can make it, the better. Second, your jumper pads are far too small.

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roseblood11
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Post by roseblood11 »

People, make layouts that include a voltage doubler!!! (See ICL7660S datasheet for schematic)
This kind of pedals really profits from 18V.

I'll do a vero based on my layout for the Galileo, but my day job eats my life at the moment...

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mganzer
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Post by mganzer »

Mmolteratx i dont understand what you mean by high z input. The big traces are (q2-c6-r4-c7) (q1-r2-c2) (bass1-2 to mid 1) (q1-q3-c6) (c13-q3-r12-r15).
Already change the jumper pads from auto to 0.056.

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jymaze
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Post by jymaze »

Well, before this 1 inch of trace on the PCB there will be 10 feet of cable and a pickup in front of the High Z input so I am not sure this 1 inch will change anything in term of the whole input chain being an antenna.

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mganzer
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Post by mganzer »

All right boys. Keep calm and do it all again - better.
what about that?
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dlsmk3leadboard.png

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mganzer
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Post by mganzer »

Roseblood - is like that the application of 7660?
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dlsmk3lead18v.png

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roseblood11
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Post by roseblood11 »

Correct.

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mganzer
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Post by mganzer »

There is the second layout.
No charge pump (yet);
No superbass mode(already super badass)
Unverified.
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DLSMK3V1.1.pdf
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azrael
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Post by azrael »

Been a while since I did a single sided layout, but I figured I'd take some time and knock it out.

Put an LT1054 charge pump.
I like putting the DC jack on top, so I leave a cutout on the top. I left ground pads next to the I/O for shielded wire, and kept them pretty short. Used a 125B, didn't seem feasible single sided in a 1590B.
I'm not rather happy with the routing on top, but TMB wiring is always a pain in the if you want to keep them in that order...Kept some ground plane in between the long traces, so that'll help.
If people are interested, I'll post a PDF and whatnot.
Image
schematic
https://i131.photobucket.com/albums/p31 ... atic-8.png

if anyone wants to check for errors, that'd be great.

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Ice-9
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Post by Ice-9 »

azrael wrote:Been a while since I did a single sided layout, but I figured I'd take some time and knock it out.

Put an LT1054 charge pump.
I like putting the DC jack on top, so I leave a cutout on the top. I left ground pads next to the I/O for shielded wire, and kept them pretty short. Used a 125B, didn't seem feasible single sided in a 1590B.
I'm not rather happy with the routing on top, but TMB wiring is always a pain in the if you want to keep them in that order...Kept some ground plane in between the long traces, so that'll help.
If people are interested, I'll post a PDF and whatnot.
[ Image ]
schematic
https://i131.photobucket.com/albums/p31 ... atic-8.png

if anyone wants to check for errors, that'd be great.
Thanks for the layout :applause: but It's a little hard on the eyes to check for errors due to the resolution, if you can post a better picture I can check it over.
It's fairly straight forward, if you want to start it , press start. You can work out the rest of the controls for yourself !

No silicon heaven ? preposterous ! Where would all the calculators go ?

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