freestompboxes.org

Posted: **26 Dec 2008, 04:17**

Torchy wrote:No need to get uptight about this.

When I put my veroboard and pcb layouts up on photobucket and here, I said I didnt mind what people did with them. I was putting them in the public domain for free use by everybody. There's no copyright notices on any of my layouts unless they include schematics - I give credit for the schematic author and a copyright notice for them (not me).

I actually see this as flattering that my pcb layout is good enough to make it into a (semi-)commercial pedal. Its a nice clean pcb, well-etched, and the build quality is good. Better than I'm used to seeing from makers that do small runs of pedals. And he didnt bug the forum for basic building help etc (unlike someone else). Well done.

If Daniel is reading this and is worried about backlash he can pm me anytime

Hey Torchy I just thought now would be a good time to say thanks for the layouts. I only build on vero and I really appreciate all your hard work. I have built so many projects using your vero layouts. They are great...

Anyways....Thanks, Chris

Posted: **26 Dec 2008, 08:58**

Daniel and I have spoken and we're cool. I just didnt want him getting any unnecessary flak.

Hey, its a very clean pro build with a sensible starting price, being sold by a very honest gentleman. Cant ask for much more than that IMHO. And I am flattered he used my pcb

Posted: **27 Dec 2008, 14:16**

Torchy wrote:Try this ...

The pnp tranny is the power switch (Geo), using the ring/sleeve connections. Wire the Batt/DC as you would for a normal neg grnd pedal. Take the fx supply from -9V and Grnd on the right.

Hi Torchy,
Output capacitor 47uF is wrong polarization- correct:" +" should be connected to the GND and "-" to the pin No 5 (output).
Best regards
box

Posted: **27 Dec 2008, 21:30**

Posted: **20 Jan 2009, 05:56**

proto'd an NPN Si version of this using 3 BC109Cs last night. hfe's measured at 530for Q1 and Q2, about 630 for Q3. part values kept more or less the same. sounds horrible in a fun way! lots of gating, squelch, harmonics. sounds nasty, basically. i like it, and think i will keep it. will probably build an OC81 version sometime, as NKT213s are hard to come by.

Posted: **20 Jan 2009, 23:02**

flood wrote:proto'd an NPN Si version of this using 3 BC109Cs last night. hfe's measured at 530for Q1 and Q2, about 630 for Q3. part values kept more or less the same. sounds horrible in a fun way! lots of gating, squelch, harmonics. sounds nasty, basically. i like it, and think i will keep it. will probably build an OC81 version sometime, as NKT213s are hard to come by.

Thats odd. I figured both transistor types were extraordinarily rare

Posted: **21 Jan 2009, 05:33**

i get them sometimes in the local market in bombay. supplies are sporadic though. i bought about 20 of them, in metal cans. make unknown, but i'm guessing BEL (bharat electronics limited), who used to manufacture tubes (which sound pretty damn good) for the indian armed forces and philips/mullard too.

EDIT: i also have about 30 black-coated glass OC44s, NOS mullard, i think. is it bad if the coating is flaking off some? i can understand that this would be a problem if there was incident light (possibly making testing for gain and leakage inaccurate), but within the confines of a stompbox, they should be pretty ok... right? am not too well versed on any other adverse effects.

wonder how they would sound in the buzzaround.

Posted: **30 Jan 2009, 04:38**

OccasionalFX wrote:I just created a tagboard layout...this is pretty close both to the original based on Graeme's pics, and to David Main's recreation.

Haven't built one yet, but I hope to soon...

Let me know what you think & if you see any errors.

Confirmed.

Posted: **14 Feb 2009, 23:08**

I build the tagboard layout today. Not bad. what gains do you guys like on this? I tried 60,60,110 with pretty good results. Only issue is the balance control doesn't seem to do too much.

Posted: **15 Feb 2009, 03:19**

gmr1 wrote:I build the tagboard layout today. Not bad. what gains do you guys like on this? I tried 60,60,110 with pretty good results. Only issue is the balance control doesn't seem to do too much.

The balance control is the bias for Q3. You should notice a change in volume and boldness of the fuzz tone when you turn it up or down.

Posted: **15 Feb 2009, 14:26**

Whoismarykelly wrote: The balance control is the bias for Q3. You should notice a change in volume and boldness of the fuzz tone when you turn it up or down.

I got it working right now. Must have been a bad pot. It's odd, it was getting full current at the collector of Q3, no matter what the pot setting. Pulled the pot, wired up a trim to test, and it was good. I thought I could get away with keeping the control on a trim, but you really need that "balance" control to find a happy medium when adjusting the other controls.

I'm still curious to what the desired hfe is of the transistors. I went with a Tonebender like set-up, and it sounds pretty great. I'll have to experiment more with that. I don't have any of the NKT213's, but I'm sure I have something close.

Posted: **15 Feb 2009, 18:51**

gmr1 wrote:
Whoismarykelly wrote: The balance control is the bias for Q3. You should notice a change in volume and boldness of the fuzz tone when you turn it up or down.
I got it working right now. Must have been a bad pot. It's odd, it was getting full current at the collector of Q3, no matter what the pot setting. Pulled the pot, wired up a trim to test, and it was good. I thought I could get away with keeping the control on a trim, but you really need that "balance" control to find a happy medium when adjusting the other controls.

I'm still curious to what the desired hfe is of the transistors. I went with a Tonebender like set-up, and it sounds pretty great. I'll have to experiment more with that. I don't have any of the NKT213's, but I'm sure I have something close.

A tonebender sert from small bear is a very safe bet. NKT213s are unneccessary although the one I built with them is a little more bassy and thick than the OC76 versions.

Posted: **15 Feb 2009, 23:25**

Well, I must ask one question about bias in this thing.
According to the shematics of BBB - we have voltage divider 27K/5K (or 24k/10k).
So max voltage at the Q3 collector can be about 1,5 V(2,5 V). Theoretically.
Is it enough for right biasing of Q3?
Or am I mistaken?

Posted: **03 Mar 2009, 14:10**

I got a request from someone to do a layout for this. I haven't had time to verify it but here it is nonetheless. Thanks to Andy for drawing up the schem, which is what I based mine upon.

Docs are 300 DPI.

Posted: **04 Mar 2009, 11:11**

Here's a compact stripboard layout. This is my first attempt at doing my own layouts so constructive criticism welcomed! Based on Andy Carrell's schematic. I've built this using 3 x Mullard OC74 and it sounds great but until someone else has a go i'll say it's unverified

Posted: **04 Mar 2009, 19:17**

if you built it, and it works, i'd say it's verified. don't sell yourself short!

nice layout. since torchy pulled his, we'll need some people to pick up the slack.

Posted: **13 Mar 2009, 21:47**

Posted: **13 Mar 2009, 22:43**

Nice!

I've been looking for Buzzaround clones on eBay, but they're always too expensive...

Posted: **14 Mar 2009, 01:21**

WhiteKeyHole wrote:

This is absolutely beautiful. I need to build one with tagboard.

Posted: **16 Mar 2009, 04:44**

Yeah, well worth the effort. Thanks!

Here's what I came up with to use the excess board;

Pretty cool.

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