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DIY Stompboxes => Building your own stompbox => Topic started by: bobbletrox on November 09, 2004, 12:45:25 AM

Title: Purple Platypus guts: strangely familiar.
Post by: bobbletrox on November 09, 2004, 12:45:25 AM
I thought I'd quickly drop by and post this interesting (I thought so) tidbit I just came across.  You may remember that the Red Llama PCB had a bunch of extra space on it that looked like it could be for a Jordon Bosstone style circuit.  Well...if you look at this picture, the Purple Platypus PCB is in the top right corner, the Red Llama in the left, and the bottom is a closeup of the values:

(http://users.bigpond.net.au/styrowfoam/purple.jpg)

The Purple Platypus is a Tube Sound Fuzz/Red Llama mixed with...something.
Title: Purple Platypus guts: strangely familiar.
Post by: Alpha579 on November 09, 2004, 04:11:36 AM
dum dum dum....
hmmm...what could it be?...
Title: Purple Platypus guts: strangely familiar.
Post by: bobbletrox on November 09, 2004, 08:12:59 AM
I always thought the Purple Platypus was a Octavia/Octave Face style circuit, but that combination of 4049 + two transistors with clipping diodes doesn't look like anything I've seen before.
Title: Purple Platypus guts: strangely familiar.
Post by: Jason M. on November 09, 2004, 01:26:40 PM
I posted something about this a while back when we were discussing the Red Llama.

I had a Red Llama and traced out the whole thing using the values printed on the board for the missing components.

It is a Tube Sound Fuzz into what looks A LOT like a Green Ringer.
There are a couple of offboard connections that I couldn't figure out.

Please post a full pic of the inside and/or any other details like transistor types.

I'll be glad to share what I've found once I have the complete circuit.

Thanks.
J.
Title: Purple Platypus guts: strangely familiar.
Post by: bobbletrox on November 09, 2004, 05:59:35 PM
Sorry to disappoint you Jason, but the pic is just from someone's eBay auction:

(http://users.bigpond.net.au/styrowfoam/purple2.jpg)

The PCB looks like it's wired up exactly the same way as the Red Llama.
Title: Purple Platypus guts: strangely familiar.
Post by: Hal on November 09, 2004, 06:47:53 PM
is it that effect that we figured out the DIP is a transistor array?
Title: Purple Platypus guts: strangely familiar.
Post by: bobbletrox on November 09, 2004, 06:54:51 PM
Nope, that was the Swollen Pickle.  The Red Llama is a tweaked Tube Sound Fuzz based on a 4049 hex inverter.  You can find the schematic by doing a search on the messageboard.
Title: ..
Post by: petemoore on November 09, 2004, 07:01:49 PM
Is that the UBE or unbuffered chip that can't be found easily?
Title: Purple Platypus guts: strangely familiar.
Post by: bobbletrox on November 09, 2004, 07:43:53 PM
It's the unbuffered version.  I found that out the hard way  :oops:
Title: Re: ..
Post by: Paul Perry (Frostwave) on November 09, 2004, 09:49:21 PM
Quote from: petemooreIs that the UBE or unbuffered chip that can't be found easily?

The 4069UBE is easily found at www.smallbearelec.com  :D (45 cents)
Title: Purple Platypus guts: strangely familiar.
Post by: brett on November 09, 2004, 11:43:29 PM
4069 and 4049UBEs can be found at DSE and Jaycar, too.