JHS/EHX Lizard Queen

All about modern commercial stompbox circuits from Electro Harmonix over MXR, Boss and Ibanez into the nineties.
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andare
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Post by andare »

Daniel Danger decided to tweet about his original FZ1 and described its origins and clearly credited Snoddy and Hobbs as its designers. When I asked him to also credit Hemmo and Tim, I also got the same spiel about nobody owning how to turn on a transistor and creating the octave. I pressed further, asking him why then credit some designers and not others and why the Lizard Queen is marketed as an original circuit and he ignored me. Of course.

So crediting circuit designers (BTW did the FZ1 also exist in those fabled 60s EE textbooks?) is ok if it allows you to show off your prized possession and knowledge of fuzz lore but telling people that the Lizard Queen is Josh's original adaptation of existing circuits by Tim and Hemmo, which would've been perfectly acceptable, is not.

Anyway I think I've given this circuit way too much attention, especially considering I don't particularly like it as the octave seems too weak.
Mission accomplished for JHS and EHX!

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DavidRavenMoon
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Post by DavidRavenMoon »

LaceSensor wrote: 21 Apr 2023, 15:23 I got the same reponse when I queried this

"Daniel Danger 2 hours ago
Because both of those are rudimentary fundamental building block circuits that existed in 1960s EE textbooks decades before someone put them on the internet in the 90s. Hemmo did not invent using 5 components to turn on a transistor, that's just how you do that, etc. If I put a recipe for a grilled cheese sandwich online that doesn't mean you have to credit me every time you make lunch. "
Except Josh and Danial didn't get them from 1960s EE textbooks. That's too much work! lol They got them from home-wrecker or Tim Escobedo's Circuit Snippets.
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thepedalarchitect
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Post by thepedalarchitect »

Does anybody has a layout of the big box PCB for etching?
Would like to mske my own big box with some carbonresistors and greeny caps.

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Manfred
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Post by Manfred »

thepedalarchitect wrote: 04 May 2023, 15:32 Does anybody has a layout of the big box PCB for etching?
Would like to mske my own big box with some carbonresistors and greeny caps.
Is in progress but without solder side art.

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thepedalarchitect
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Post by thepedalarchitect »

Perfect 👍

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Manfred
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Post by Manfred »

Here is the preview for the large layout which was derived from the original layout.
When tracing, I found the following differences in the schematic.
Is the value of C8 with 47pF at this point ok?
According to this I have to change the small layout in the post above then.
Lizard Queef corrected schematic.jpg
Lizard Queen Large Layout.JPG

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Lani
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Post by Lani »

bugg wrote: 20 Apr 2023, 18:26 Big Box:

Q1 - 2N2219
Q2 - 2N5088
Q3 - PN2222A
Q4 - MPSA92

C8 (in schematic above) is omitted
Feedback cap on Q2 is 47pF.
I think your good

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Manfred
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Post by Manfred »

I I just saw that nhalda's circuit structur on the first page of the topic is correct.

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Post by Manfred »

Here is the large layout with the designators from nhalda's schematic.
The values for C7 and C8 are my guess.
Lizard Queen Large Layout.jpg
Ready-to-print PDF-FIles:
Lizard Queen Large PCB Component Side.pdf
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Lizard Queen Large PCB Solder Side.pdf
(4.65 KiB) Downloaded 76 times
SprintLayout6.0 file:
Lizard Queen Large.zip
(20.9 KiB) Downloaded 73 times
Gerber & Drill files:
Lizard Queen Large Gerber & Drill.zip
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Manfred
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Post by Manfred »

I made another small PCB layout following nhalda's schematic using the transistors 2N2219 and MPSA92.
Lizzard Queen Layout V2.JPG
Lizzard Queen Layout V2.JPG (164.04 KiB) Viewed 2320 times
Ready-to-print PDF-files:
Lizzard Queen Layout V2 components side.pdf
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Lizzard Queen Layout V2 solder side.pdf
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SprintLayout6.0 file:
Lizard Queen V2.zip
(18.82 KiB) Downloaded 80 times
Gerber & Drill files:
Lizard Queen V2 Gerber & Drill.zip
(13.56 KiB) Downloaded 72 times

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Lani
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Post by Lani »

Here is my layout which should fit in a 1290NS/1590B. Just noticed I have the CB3 designator upside down, oh well. Enjoy, and have fun!!
LIZARD QUEEN - 3D RENDER - BOTTOM.png
LIZARD QUEEN - 3D RENDER - TOP.png
Attachments
LIZARD QUEEN - GERBER - v1.00 - 05.07.23.ZIP
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LIZARD QUEEN - COMPLETE PCB ETCH FILES - 3D RENDER - v1.00 - 05.07.23.PDF
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tuck
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Post by tuck »

IMG_9573.jpg
Beware it's a really fiddly build.
I use the small alpha pots like this RD901F-40-15R1-B10K where you have to cut one of the spacers so it does not touch the solder pads beneath it.
Gerbers I sent to JLCPCB
lillizard.zip
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Post by sigurdbjohansson »

Hey :)

Total noob here. I wanted to know if there is a way to remove the dry out on a Lizard Queen Nano(there probably is), so I only have a wet effect signal out. I don't need the bypass signal. How do I do it?

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jimilee
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Post by jimilee »

sigurdbjohansson wrote: 22 May 2024, 18:57 Hey :)

Total noob here. I wanted to know if there is a way to remove the dry out on a Lizard Queen Nano(there probably is), so I only have a wet effect signal out. I don't need the bypass signal. How do I do it?
Don’t use the stomp switch. Wire the board in and out to the input and output jacks.

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