Lovetone Big Cheese  [documentation]

Original effects with schematics, layouts and instructions, freely contributed by members or found in publications. Cannot be used for commercial purposes without the consent of the owners of the copyright.
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LaceSensor
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Post by LaceSensor »

This is my first effort at a vero layout
Its based on the OLC variant, which was based on the Big Cheese.

Image

Would appreciate someone taking a look over it, or if you fancy building it.
When I wanted to do a cheese there was no vero's available and I'm sure it could be done better but noone has in many years, so it is what it is for now.

Cheers

LS

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Post by LaceSensor »

LaceSensor wrote:
Image

S
Fixed above

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Post by JOHNO »

Got a schematic? :roll:

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Post by LaceSensor »

Ill have to dig one out I just based it on the OLC layout. Sorry I dont mean any offense with my lack of posting skills.

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Post by JOHNO »

OLC? You've lost me.

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Post by LaceSensor »

As I understand it, the OLC was based on RG Keens Great Cheddar (direct clone of Big Cheese) with some changes around the 2nd Op Amp to increas volume

Here is what I have quickly scraped together (thanks to the people that did these)

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Post by LaceSensor »

JOHNO wrote:OLC? You've lost me.
There was a company called OLC (officially licensed circuits) who made a pedal called the Chunky Cheese (as a kit, and as a prebuilt device).
I copied their build documents.
This is their build guide... http://www.olcircuits.com/documents2008 ... dguide.pdf

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Post by JOHNO »

Yes i see. just down loaded the file after a little search.

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Post by LaceSensor »

Cut under C10 also....Bah!

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Post by JOHNO »

i guess there is a trace cut under R3.
Check the connections of C5 and also D1 and have a good look at the connections of Q3 and what it connects to. Thats as far as i have got. You need to fix those mistakes before i can go on.

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Post by LaceSensor »

Heh, might jsut ask a mod to delete the thread looks like i need to do a lot more work :(

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Post by JOHNO »

Nah it dont matter. Check the connections or C9, C8, R15 and R14

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Post by LaceSensor »

You know when you spend ages on somethnig...then you take a tea break....then realise its shit?! ;)

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Post by JOHNO »

yep i know all about it. IC2 pin 4 should go direclty to ground. R17 can go to ground at the top of the board and that will save a line. After those couple of fixes your there. :horsey:

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Post by LaceSensor »

aaargh

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Post by JOHNO »

I havn't looked at that yet, but here is an idea you may want to consider. To make the layout fit an a box easier i do big layouts like this. And yes i know what you are going to say. Ive done plenty of layout and then had to do them over again don't worry. Anyway, in this diagram the signal follows the arrows. I try to stick to 30 holes across because it fits the boxes i use just nice. And i can go about 20 something holes the other way and still have plenty of room for switches and jacks and battery. Hope it helps a bit, well maybe for next time.
Vero.png

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Post by LaceSensor »

Ok I think I have address your changes. R3 was completely off, but now sorted. I think everything around Q3 is sorted, not sure about the jumper between C and E though...

Thanks so much for your time and help thus far..ill repost when I have had time to properly review, rather than look even more foolish (!) :slap:
Last edited by LaceSensor on 20 Jul 2011, 17:56, edited 1 time in total.

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Post by LaceSensor »

I hear what you are saying about better layouts but this was my first EVER, so its a steep learning curve.
If I can get this one correct it will be a basis for revisions later.

Damn i just saw C16 needs to be grounded too, and id removed teh connection from pin 2 IC2 to R20 :roll: :roll: ..sigh! LOL
I have a new found respect for ppl doing layouts

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Post by JOHNO »

I'll check the layout in the morning for you pal its 3.50 am here. :shock: I need some sleep.
LaceSensor wrote:I hear what you are saying about better layouts but this was my first EVER, so its a steep learning curve.
If I can get this one correct it will be a basis for revisions later.
Your doing ok. It's pretty tricky isn't it. I know it's your first (might be your last) I'm just trying to stick some ideas in your head. I get pretty stupid with my layouts. I have trace cuts every where so the signal doesn't travel down tracks for no reason. It ends up more like a pcb.

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Post by LaceSensor »

Shit dude, get some sleep! thanks so much
I think its done. I keep rechecking it over and over.
I will take the time to make this vero, even though I just made the OLC on perf...ive got a mate who would likely take the vero off my hands

Ill be back with what I beleive is a final version for you to look at, at your leisure

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