Mad Professor - Deep Blue Delay

Dirk_Hendrik · Post by **Dirk_Hendrik** » 07 Oct 2009, 21:36

BJF wrote: The circuitboard in DBD is three sided and the schematic as posted has a few flaws but it is impressive just the same that somebody took the time to trace thus far

Considering this is the first time I look at this thread above remark says something:
- If there's errors in the previously posted schem a simple fool will get em out with the PT's datasheet.
- but no need for that since someone already built it
- and anyone, really anyone, who needs a 3 layer PCB for THAT should go back to primary school. Djeez. Anyone handy wit MS paint can do better.

and therefore when Bjorn cares to read,
My sincere apologies for responding so way overtime on this Bjorn but what you were talking here was Buhlshitt.

DimebuGG · Post by **DimebuGG** » 07 Oct 2009, 23:10

Nah, I won't buy his statement as he's just trying to confuse everyone.."protection" eh!.

himister · Post by **himister** » 07 Oct 2009, 23:26

Did anyone stumbled upon these fellows?

China versions TP5299 and CD3699GP. These were in DVD karaoke modules.

: TP5299P.jpg (44.01 KiB) Viewed 4351 times

: CD3699GP.jpg (38.75 KiB) Viewed 4351 times

TP5299datasheet.pdf: (74.45 KiB) Downloaded 369 times

quaternotetriplet · Post by **quaternotetriplet** » 07 Dec 2009, 02:21

sorry to bump this thread. what does NC mean on the pin4?

newly · Post by **newly** » 07 Dec 2009, 03:01

quaternotetriplet wrote:sorry to bump this thread. what does NC mean on the pin4?

NC = no connection

quaternotetriplet · Post by **quaternotetriplet** » 07 Dec 2009, 04:31

newly wrote:
quaternotetriplet wrote:sorry to bump this thread. what does NC mean on the pin4?
NC = no connection

but i compared it to the robote delay. it was connected to the ground.

siore · Post by **siore** » 17 Mar 2011, 03:13

Seeing as this delay is advertised as being usable before or after distortion, which part of the circuit exactly does this? Is it the changes on the input buffer or the repeat pot / level pots changes?

~arph · Post by **~arph** » 03 May 2011, 10:03

Correct me if I'm wrong, but doesn't the way the repeat pot is wired in the supposed schematic mean that the less repeats you dial in the lower the repeat level becomes? I mean, the 2K connected to the 47nF gradually gets connected to ground. I simmed it and the repeat level changes about 5dB by just changing the repeats pot. Was this intentionally and can anyone with a DBD confirm this?

pietro_moog · Post by **pietro_moog** » 19 May 2011, 21:41

hi guys.
is this schematics verified?
did somebody build it?

batteryacidtea · Post by **batteryacidtea** » 30 May 2011, 12:54

Is the schematic verified? If yes, i can make a layout for it, or at least try, lol.

Visualdistortion · Post by **Visualdistortion** » 19 Jul 2011, 19:23

Some news about a PCB?

pietro_moog · Post by **pietro_moog** » 24 Jul 2011, 21:04

it would be nice to have a verified layout.
i built one, but i didn't finished yet. (too many projects around and not so much time)

how does it sound?

madbean · Post by **madbean** » 24 Jul 2011, 21:19

I put it on the breadboard a couple of months ago. Sounds really good. Honestly, there is nothing really to verify from the schematic...it's just a few mods and omissions from the rebote.

distortion_gfx1 · Post by **distortion_gfx1** » 25 Jul 2011, 04:29

madbean wrote:I put it on the breadboard a couple of months ago. Sounds really good. Honestly, there is nothing really to verify from the schematic...it's just a few mods and omissions from the rebote.

would you say better than the rebote v2.5 ?

pietro_moog · Post by **pietro_moog** » 06 Sep 2011, 16:22

finished mine. very cool. very cool. definitely better than stock rebote.

we need a new layout however, something small enough to fit in a 1590b.

rocklander · Post by **rocklander** » 09 Sep 2011, 00:59

pietro_moog wrote:finished mine. very cool. very cool. definitely better than stock rebote.

we need a new layout however, something small enough to fit in a 1590b.

did you use this schem?

if so, I've just done an UNVERIFIED 1590A layout of it.

be great if someone can run another eye over it.. I can't see the forest for the trees cos I've been staring at this thing for days now

(this layout was removed as it was updated, two posts below)

mysticwhiskey · Post by **mysticwhiskey** » 10 Sep 2011, 06:36

rocklander wrote:
pietro_moog wrote:finished mine. very cool. very cool. definitely better than stock rebote.

we need a new layout however, something small enough to fit in a 1590b.
did you use this schem?

if so, I've just done an UNVERIFIED 1590A layout of it.

be great if someone can run another eye over it.. I can't see the forest for the trees cos I've been staring at this thing for days now

puddleduck-delay-pcb-layout1.0.pdf

Looks good rocklander, I traced your layout out to compare with the schematic. Only difference was the 2n2 capacitor to the lower left of the 'repeat' pads on your layout, this is marked as 22n on the schematic. Entirely possible this may be intentional though.

rocklander · Post by **rocklander** » 10 Sep 2011, 06:46

**updated on 20120313**
*** the input cap was adjusted to 22nF ***
***************************************************[/i][/u][/color]
thanks heaps!

I've updated it.. .. also, track clearance was way too little on such a small board... so I opened that up a bit too..

pudlleduck-delay-1590bpcb-layout4.04.pdf: (218.49 KiB) Downloaded 1205 times

I should mention that you should use the schem to compare. there are no connections on this board for the pots to have pin1 to earth. I just run a lead to each of the pin1's to earth directly in order to save space on the board.

kinski · Post by **kinski** » 10 Sep 2011, 23:22

So this is verified? I'd love to slap this together. I'm going to order some parts soon and would love to include this in my order.

rocklander · Post by **rocklander** » 10 Sep 2011, 23:37

kinski wrote:So this is verified? I'd love to slap this together. I'm going to order some parts soon and would love to include this in my order.

I've etched and drilled my board. will hopefully populate it today and if so, will report back.

Mad Professor - Deep Blue Delay [traced]