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 Post subject: Hive Mind
PostPosted: Sat Nov 07, 2015 3:32 pm 
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Somebody asked me to do a Buzzaround build for them, so I modified my Tonebender layout to accommodate it. It's kind of a fun pedal. High gain and wild.

The gut shots didn't come out great. I'll take another photo later.

Image

Image

Image

Image


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 Post subject: Re: Hive Mind
PostPosted: Sat Nov 07, 2015 3:50 pm 
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Of course your CLR is surface mount. :mrgreen:

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 Post subject: Re: Hive Mind
PostPosted: Sat Nov 07, 2015 3:55 pm 
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sjaustin wrote:
Of course your CLR is surface mount. :mrgreen:


Actually, there are two CLRs. :-)

The board has one as well. I only need a resistor in one of them, but then I have to jumper the other. I decided to split the difference and put a resistor in each spot.


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 Post subject: Re: Hive Mind
PostPosted: Sat Nov 07, 2015 4:48 pm 
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unreal. Pos ground?

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 Post subject: Re: Hive Mind
PostPosted: Sat Nov 07, 2015 4:53 pm 
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geekmacdaddy wrote:
unreal. Pos ground?


It's standard center negative. I added a voltage inverter circuit because so I don't have to bother with special power supplies or cables.


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 Post subject: Re: Hive Mind
PostPosted: Sat Nov 07, 2015 4:55 pm 
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couldn't read the IC. such sweetness. I love the circuit. how much for one?

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 Post subject: Re: Hive Mind
PostPosted: Sat Nov 07, 2015 4:57 pm 
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geekmacdaddy wrote:
couldn't read the IC. such sweetness. I love the circuit. how much for one?


Shoot me a PM and we'll talk.


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 Post subject: Re: Hive Mind
PostPosted: Sat Nov 07, 2015 4:58 pm 
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Location: Smithers, British Columbia Canada
looks awesome.. how did you do the enclosure?

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 Post subject: Re: Hive Mind
PostPosted: Sat Nov 07, 2015 5:03 pm 
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RiffRaff wrote:
looks awesome.. how did you do the enclosure?


You mean graphically? I did the artwork in Adobe Illustrator and then laser etched it.


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 Post subject: Re: Hive Mind
PostPosted: Sat Nov 07, 2015 5:45 pm 
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Lovely build, I do love a laser etching machine


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 Post subject: Re: Hive Mind
PostPosted: Sat Nov 07, 2015 6:08 pm 
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thorpy6 wrote:
Lovely build, I do love a laser etching machine


I was looking into them
I wonder what type you need to do this?

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 Post subject: Re: Hive Mind
PostPosted: Sat Nov 07, 2015 6:11 pm 
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Location: UK
A variant of this....

https://www.epiloglaser.com/laser_engra ... oC1Pjw_wcB

P.s. They are not cheap!


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 Post subject: Re: Hive Mind
PostPosted: Sat Nov 07, 2015 6:22 pm 
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Yeah, we have an Epilog Mini18. They are not cheap, but are good machines.

Make sure you factor in a budget for a good inline fan and the required ventilation. We had to run ductwork.


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 Post subject: Re: Hive Mind
PostPosted: Sat Nov 07, 2015 6:32 pm 
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Location: Smithers, British Columbia Canada
so I guess those cheap ones made in china won't burn the paint off of an enclosure?

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 Post subject: Re: Hive Mind
PostPosted: Sat Nov 07, 2015 7:47 pm 
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I would've loved to have found a cheaper machine, but I find the cheap Chinese machines insufficient for my needs.

One of the guys on Madbean's forum bought one and upgraded a lot of parts (in particular the controller board) and he seems to like it (after quite a lot of effort).


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 Post subject: Re: Hive Mind
PostPosted: Sat Nov 07, 2015 9:10 pm 
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Beautiful Dave. I really like the graphics.- positive/negative space, and all that. 8)
I've built a couple of Buzzarounds, but was never really sure if I got them sounding right. Sort of like a "broken" Mk3?
I'm assuming the fourth knob is a bias?

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 Post subject: Re: Hive Mind
PostPosted: Sun Nov 08, 2015 8:57 am 
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guitarmageddon wrote:
Beautiful Dave. I really like the graphics.- positive/negative space, and all that. 8)
I've built a couple of Buzzarounds, but was never really sure if I got them sounding right. Sort of like a "broken" Mk3?
I'm assuming the fourth knob is a bias?


Thanks Ben.

Yep, the balance is basically a bias control. The original didn't have a volume control so people used that as a basic vol control, which is unfortunate. Having a real volume control helps a lot.

I can't say that mine really sounds like a broken Mk3. It's not the smoothest of fuzzes, but neither is the Mk3.


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 Post subject: Re: Hive Mind
PostPosted: Sun Nov 08, 2015 10:28 am 
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guitarmageddon wrote:
I've built a couple of Buzzarounds, but was never really sure if I got them sounding right. Sort of like a "broken" Mk3?
I'm assuming the fourth knob is a bias?



Q1 gotta have real low hfe. Like 50ish, Q2 around 78 and Q3 134ish. I have achieved nice results with this.

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 Post subject: Re: Hive Mind
PostPosted: Sun Nov 08, 2015 4:43 pm 
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geekmacdaddy wrote:
guitarmageddon wrote:
I've built a couple of Buzzarounds, but was never really sure if I got them sounding right. Sort of like a "broken" Mk3?
I'm assuming the fourth knob is a bias?

Q1 gotta have real low hfe. Like 50ish, Q2 around 78 and Q3 134ish...

Ahh, gotcha! Will try those hfes- and add a volume!
Thanks for the tips gents.

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 Post subject: Re: Hive Mind
PostPosted: Mon Nov 09, 2015 3:26 pm 
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Location: Madison, Wisconsin
I've found the "formula" for MkIIIs has to do with the whole Darlington set up for Q1 and Q2. Basically, add up the Q1 and 2 hfe, and make sure that doesn't exceed your gain for Q3. That way the main fuzz stage at Q3 isn't getting hit so hard that it muds up or gets overly fuzzy. The math on geekmacdaddy's works out just right. Also, lower leakage on Q1 and 2 and higher leakage on Q3 sounds best to my ears. This seems to be the thing for Buzzarounds as well, although I haven't built my own. I have one made by Ghost Effects, and it's quite a musical sound despite the aggression; probably a little less gain than the MkIII I built. Really loud though! The balance control may be odd by today's standards but it works as advertised.


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 Post subject: Re: Hive Mind
PostPosted: Sun Mar 27, 2022 1:38 am 
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thorpy6 wrote:
A variant of this....

https://www.epiloglaser.com/laser_engra ... oC1Pjw_wcB

P.s. They are not cheap!


I purchased one engraver from China https://www.laserchina.com/engraver/ a few years ago. Now the pricing is really low, it is no longer a high tech tool.


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