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Topics - Guybrush

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Open Discussion / Univibe suggestions
« on: January 09, 2021, 03:15:43 PM »
Hi gang

I'm looking for some suggestions for a kit for a classic Univibe please. I'm ideally looking for a maximum of three knob without any extra bells and whistles (no need for a vibe/chorus switch etc). Does such a thing exist?

All suggestions very welcome.


Tech Help - Projects Page / Squealing RAT
« on: September 19, 2020, 01:41:19 PM »
Hi all

I recently dug out an old Rat pedal I built some time ago. When switched on everything works great but when bypassed it's outputting a very audible whine. The whine changes pitch when I turn the tone knob and gets louder when (you guessed it) I turn the volume knob. This short video should hopefully demonstrate things.

As it's only affecting the bypass signal I'm thinking that the 3pdt may have gone bad so will try replacing it. Just wondering if anyone has any other suggestions before I start taking it apart.

Thanks as always!

Open Discussion / Reverse Killswitch
« on: August 23, 2020, 04:05:32 PM »
Hi all.

I recently gave my Strat a makeover and part of the process was to install a killswitch in place of the tone knob I removed as below...

The killswitch works great and is wired like this...

I've no idea if it's possible but I'm now hoping to install a toggle switch that reverses the effect of the killswitch so that the signal is cut until the switch is pressed.

Just wondering if any of the many smarter than me people around here could show me how I might go about wiring this?

Thanks as always guys.

Open Discussion / Another pedal suggestion please
« on: July 07, 2020, 02:58:34 PM »
Hi guys

Lockdown has really stoked my pedal building fires again and I keep asking people here for recommendations, hope you lot don't mind.

I'm looking to build a Fuzz Face clone with an added input level knob (so I can do the Hendrix volume roll off trick within the pedal rather than at on my guitar) and ideally some form of tone control. Just wondered if anyone had any suggestions for an available PCB that fits the bill?

Thanks as always

Open Discussion / One knob pedal suggestions please
« on: July 03, 2020, 08:43:19 AM »
Hi gang

I've got a hankering to build a one knob pedal but don't know what to go for.

I'm thinking probably fuzz but any and all suggestions/recommendations will be gratefully received.


Open Discussion / 3pdt toggle switch
« on: June 17, 2020, 04:59:27 AM »
Hi all

I'm looking to build a new test rig and would like to use a 3pdt toggle switch (rather than a footwitch). Unfortunately I can only find on- off on-on and on-off-on toggle switches. Does anyone know where I might find the necessary on-off version?

Thanks as always.

Open Discussion / Roland AP-7 Jet Phaser
« on: June 11, 2020, 10:07:46 AM »
Hi gang

I've been looking for an over the top phaser for ages and recently discovered the old Roland AP-7 Jet Phaser. I'd love to build one but can't seem to find a reliable PCB or layout for it. Just wondering if anyone can point me in the direction of one?

Thanks as always.

How Do I? Beginner's Paradise. / Eagle help
« on: March 08, 2020, 10:03:16 AM »
Hi all

I've recently decided I'd like to get my head around Eagle. I've drawn a schematic up and have converted it to a board layout but I'm overwhelmed by the options Eagle gives you for things like trace widths, board layers, polygons, etc etc. I was just wondering if anyone knows of any good videos or online tutoruals that run through the basics of eagle for pedal makers?

I've had a good Google for help but I'm just getting lost in the sea of info out there.

Thanks as always!

How Do I? Beginner's Paradise. / Loop strip wiring question
« on: March 08, 2019, 05:11:17 AM »
Hi all

I am looking to build a bypass loop strip with a Klon buffer at the start of the chain using the below wiring diagram:

My favorite fuzz doesn't like having a buffer in front of it and so I would like to modify the wiring to include a switch that is not connected to the buffer and so sits independent of the rest of the chain. Would anyone be able to help me out in how I might go about wiring this up? For convenience please feel free to add to the below image:

As always, thanks in advance for your help

Hi there

I am planning on building an 8 way TBP loop strip for my baord. I have done some Googling to look for a good wiring diagram but everyone I have found either does mopre than I need (tuner out etc) or is unclear in someway (at least to me). The one I found that seems to best fit the bill for my needs is this one:

The thing I am questioning is the LED wiring. It seems to show the LED taking 9vt from the DC jack with a pull down resistor attached between the negative leg of the LED and the 3pdt. That doesn't sound right to me. Surely the resistor should go between the DC jack and the positive leg of the LED?

Secondly is there a limit to how many LEDs can be powered off 9v? Will each one need to be connected directly to the DC jack in parrallel or can I string them together in series?

Thanks in advance

How Do I? Beginner's Paradise. / Extra + and - pads on SAWSE board
« on: August 10, 2017, 04:37:38 AM »
Hi all

It's been a long tome since I put a Madbean board together and have seeminly forgotten some of the basics.

The SAWSE board has the usual four 3pdt connection pads at the base of the circuit: In, Out, 9vt and Grnd

At the top of the board are extra pads for 9vt and Grnd.

My question is do I need to connect these two extra pads to my test rig when testing the board or do I just need to connect the four 'normal' pads?

Thanks in advance

Open Discussion / Envelope controlled tremolo
« on: July 21, 2017, 03:15:18 AM »
Hi all

Apologies if this has been asked before but I have a friend asking me about building him a tremolo in which the trmolo speed increases the harder you play. I guess it would be an envelope controlled kind of thing?

Is anyone aware of any DIY projects that offer this?

Thanks in advance

Open Discussion / Boost pedal with mute
« on: June 23, 2017, 04:38:48 AM »
Hi all

I'm looking at making a simple one knob boost pedal that has zero volume when the knob is fully rolled off.
Does anyone know if such a project exists?

Thanks in advance

Open Discussion / Can anybody identify this circuit?
« on: May 19, 2017, 12:19:30 AM »
Hi all

Just come across this on Instructables:

Just wondering if anyone with a better understanding of schematics than me can identify if it's based on any existing circuit? I'd like to try and build it but I'm useless at working from schematic alone.

If it is based on an existing design I'm hoping I'll be able to find a layout of some kind for it.

Thanks in advance!

Open Discussion / Any DIY 12 stage phasers available?
« on: February 28, 2017, 06:36:48 AM »
Hey all

I've been listening to Kurt Vile a bit recently and loving his phaser sound. A quick Google shows he uses a Moog MF-103 Moogerfooger 12-Stage Phaser.

Just wondering if anyone is aware of any DIY 12 stage phasers that are availble? (I'm guessing there aren't).

Thanks in advance!

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