Category: Uncategorized
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Tremolo-matic X by stompboxology
This circuit is based on a type of tremolo that some Fender amp models. Its operation is very interesting. It splits the signal path into a low pass and high pass routes and alternates crossfading between each. It has a sweet subtle flavor of tremolo. I had built this circuit years ago making a PCB…
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Experimenting with the mill
These are some experiments to render some patterns on the mill. I did a wave pattern on a powder-coated green box and two bare-metal boxes. I also did a pattern similar to the cover of Joy Division’s UnknownPleasures. The green boxes came out good but the lack of contrast makes the effect rather mild. The…
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Tremolo-matic XXII v2
This project was originally from the Stompboxology newsletter. In a discussion about the circuit, the question came up about an extra op-amp used to create a second bias voltage buffer. This appears twice on the schematic as IC1B and IC2. IC2 seems redundant. I decided to test this out by making a second version of the…
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UBE Screamer 4069
I wanted to do something a little more artful as a box. The Joy Division’s Unknown Pleasures has a very iconic image. I don’t know what the secret sauce of this image is but it’s very compelling. From what I read the image appeared in Scientific American 1971 and was described as “stacked plot” of…
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Tremolo Matic XXII Stomboxology Update
I updated the Tremolo Matic XXII from the stompboxology newsletter by removing the single op-amp. It looked like this was used as an extra buffer for one of the reference voltages. Everything works without this extra op-amp but there is a distinct thump form the LFO. I made another run of boards via PCBWay.com. The…
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Smash Drive Aron Nelson
Smash Drive is a DIY community project by Aron Nelson, who runs the DIYStomboxes.com forum. Smash Drive is a overdrive/distortion built from the LM386. Its simple and easy to work with. you’ll find the 386 in many guitar circuits. its cheap and easy to get. Projects that use the LM386 RunOffGroove Ruby Earth Quaker Devices…
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Silicon Tone Bender
Here is a Silicon Tone Bender built around four BC109 transistors. It sounds pretty good! The original circuit was provided by user Mic Tester over at FreeStomboxes.org. I built this some years ago on a piece of strip board. I ended up selling it at the Musicians Electronics Swap meet in Berkeley. Here are some…
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Mini phase 45
I started this mini Phase 45 so long ago I cant remember when. It wasn’t working, so I pushed aside and forgot about it. I found it again, and decided I would get it working. There was sound but no phasing when the circuit was engaged. My first guess: the oscillator was not oscillating. I…
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6 new PCBs from PCBWay
I got 6 new boards made at PCBWay.com. The PCBWay.com service is a great deal the biggest cost is shipping. The best deal is to order multiple boards at once since the shipping is combined. This time I waited til I had 6 boards designed and ready to go before ordering. As long as your…
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Vulcan 1.2
I made a couple small updates to the first Vulcan PCB. Got the new boards and did a build to confirm they are working as expected. Everything works as it should! This is a pretty good sounding overdrive distortion. The best part is the ability to clean up the sound by rolling off the volume.…
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Bloviator/BBE Sonic Maximizer
I got this board on a whim. Ever wonder what the BBE Sonic Maximizer sounds like? Ever wonder what is sonic maximization? Well it’s these questions that motivate me to make pedals! I got this board from MadBean Pedals. I was on a quest to create a pedal board full of mini pedals. What does…
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Parentheses Fuzz Noise
I built a few of PedalPCBs Parentheses Fuzz. great clone of the EarthQuaker Life Pedal. All of the pedals I built seem to have whistling noise/oscillation sound when the Gain and Octave are at 100%. I haven’t played an original Life pedal so I’m not sure if it has this same issue. The noise sounds…