Catalinbread - Pareidolia Harmonic Mesmerizer  [traced]

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

roseblood11 wrote:
LaceSensor wrote:any news on a layout / trace?
If someone (you?) draws a clear schematic, I'll draw a veroboard layout.

But maybe a pcb layout would fit in a 1590B enclosure...
Ive more chance of helping with the vero :shock:

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coldcraft
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Post by coldcraft »

i can provide a PCB layout if someone makes me a clear schematic
Black Dynamite wrote:you need to shut the fuck up when grown folks is talkin.

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Post by gigelmargel »

Hello and thank you KindaFuzzy for your work!

On the schematic that you provide, both outputs of the TL072 (pins 1 and 7) go to "LED", but I can't see any LED in the schematic.
May I suppose that is the bypass LED, which is a pulsating one?

Best regards!

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Post by KindaFuzzy »

gigelmargel wrote:Hello and thank you KindaFuzzy for your work!

On the schematic that you provide, both outputs of the TL072 (pins 1 and 7) go to "LED", but I can't see any LED in the schematic.
May I suppose that is the bypass LED, which is a pulsating one?

Best regards!
Oh, yeah they go to either one of the outside positive lugs of a two colour LED, and the center common negative end of that LED goes to the stomp switch, which grounds or ungrounds it to turn it on or off with the effect. You could probably do something similar with two regular LEDs with their negative ends tied together. The stock LED is green/orange but I had a green/red one that was pretty cool too.

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Post by gigelmargel »

KindaFuzzy wrote:
gigelmargel wrote:Hello and thank you KindaFuzzy for your work!

On the schematic that you provide, both outputs of the TL072 (pins 1 and 7) go to "LED", but I can't see any LED in the schematic.
May I suppose that is the bypass LED, which is a pulsating one?

Best regards!
Oh, yeah they go to either one of the outside positive lugs of a two colour LED, and the center common negative end of that LED goes to the stomp switch, which grounds or ungrounds it to turn it on or off with the effect. You could probably do something similar with two regular LEDs with their negative ends tied together. The stock LED is green/orange but I had a green/red one that was pretty cool too.
Thank you very much KindaFuzzy!
Better to ask, because I understood wrong from the schematic.

Best regards!

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Post by hbo »

Thanks for the trace, KindaFuzzy.

I'm planning a vero layout for this one so I went ahead and drew up a schematic. Do let me know if I missed something.
Attachments
Pareidolia_1.0.png

roseblood11
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Post by roseblood11 »

Ah, the uncrowned king of the vero layout joins in! :P

Do you think that it will fit into a 1590b (=21 holes wide), maybe without a battery? Would be great...


Which program do you use to draw schematics?

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Post by roseblood11 »

Which FET's are used in the circuit? KindaFuzzy wrote "2n5484" at the beginning of the thread, but "2n5485" a bit later... :?:

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KindaFuzzy
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Post by KindaFuzzy »

5484's are in the original, I used 5485's on the breadboard so I must have put that on the schematic. I think they're almost the same anyways.

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Post by hbo »

roseblood11 wrote:Ah, the uncrowned king of the vero layout joins in! :P

Do you think that it will fit into a 1590b (=21 holes wide), maybe without a battery? Would be great...


Which program do you use to draw schematics?
I did the schematic in Eagle

As promised here's a vero layout. This one was surprisingly tough, but mostly because I tried to size it for a 1590B (which I think I managed). Hopefully there aren't any mistakes.

Image

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Post by roseblood11 »

In the first post KindaFuzzy wrote that it's four 2n5484's and two 2n5457's...

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Post by hbo »

roseblood11 wrote:In the first post KindaFuzzy wrote that it's four 2n5484's and two 2n5457's...
Ah, didn't catch that.

I've updated the vero layout above, and here's an updated schematic as well.
Attachments
Pareidolia_1.1.png

Mich P
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Post by Mich P »

Is there someone 's done it ?
Mich P.

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Post by Nocentelli »

Mich P wrote:Is there someone 's done it ?
Mich P.
Still waiting for the bloody XR2206 chip. I ordered from musikding (only because they had all the parts in one place, so thought i'd save a bit on shipping) but they sent the rest of the order without the chip, which was "to follow"... still waiting. I've got the rest of the board built (lovely layout, thanks hbo!) JUST NEED THE CHIP.... Almost tempted to splash out on an eBay purchase just to get it done.
brownwhopping wrote:How can I learn by reading threads an making circuits, when some day I can see a lawsuit or somebody beat me in the face for that?

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Post by Pruttelherrie »

hbo wrote: I've updated the vero layout above, and here's an updated schematic as well.
Harold, are you willing to share the eagle schematic so I can have a try at designing a PCB? (Not having to draw the schematic myself saves me some time and averts possible errors!)

Iwan

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Post by roseblood11 »

Mich P wrote:Is there someone 's done it ?
Mich P.
I ordered a 2206 and the FET's the day KindaFuzzy started the thread,
but I have to admit that I'm just too lazy to start soldering... :P

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Post by hbo »

Built it tonight. Works, and sounds nice too! I had to reorient the depth and rate pots. Rev. 3 is now verified.

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Nocentelli
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Post by Nocentelli »

roseblood11 wrote:I ordered a 2206
musikding?
brownwhopping wrote:How can I learn by reading threads an making circuits, when some day I can see a lawsuit or somebody beat me in the face for that?

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Post by roseblood11 »

no, a german e-bay seller, but too expensive

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Post by hbo »

Pruttelherrie wrote:
hbo wrote: I've updated the vero layout above, and here's an updated schematic as well.
Harold, are you willing to share the eagle schematic so I can have a try at designing a PCB? (Not having to draw the schematic myself saves me some time and averts possible errors!)

Iwan
Here you are. I didn't draw it with the intention of it ever being made into a PCB so let's hope I picked reasonable components packages.
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Pareidolia.sch
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