MATRIXSYNTH: circuitbenders


Showing posts with label circuitbenders. Show all posts
Showing posts with label circuitbenders. Show all posts

Tuesday, December 19, 2023

Demon Seed - Noise Apocalypse


video upload by circuitbenders.co.uk

"Every year we make a pedal to donate to the raffle prize fund for the local Christmas Covers Southsea gig, where various idiots play ridiculous cover versions to raise money for Rowans Hospice and Music Fusion. This year its the Demon Seed!

The circuitbenders.co.uk Demon Seed is a fuzz / distortion / frequency shifting / 8-bit / lo-fi / filth pedal that makes noise in industrial quantities more than sufficient to made deaf people weep.
It utilises the Holtek HT8950 voice changer chip that was designed specifically for use in toy robot voice changer megaphones. The HT8950 converts the analogue guitar signal to 8-bit digital, applies 6 selectable types of frequency shifting or a weird robot arpeggio effect, and then converts the digital signal back to analogue again.
Before someone points it out, yes this pedal was to some degree inspired by the excellent Death By Audio 'Robot' pedal, but with the addition of several features that the HT8950 chip offers but the Robot pedal doesn't use. The Robot is the original HT8950 pedal. All hail Death By Audio!

This demo was recorded using just the Demon Seed pedal and and a clean amp simulator. You'll have to forgive the inability to play the guitar.

We may well have some of these available in the new year."

Sunday, April 16, 2023

Korg Poly800 MkII w/ CIRCUITBENDERS Mod - Demo


video upload by Ticco Ross

"Today I pulled my old Poly 800 out of the closet and set it to sing. It has the circuitbenders.co.uk modification https://www.circuitbenders.co.uk/synt..."

Tuesday, September 07, 2021

Modified TR707 with HKA Design ROM switcher


video upload by circuitbenders.co.uk

"A (far too long) demo of a modified Roland TR707 with a HKA ROM switcher installed to give 8 separate sound banks. Different banks are activated by holding down the 1 to 8 step keys as you turn it on.

This was mainly done as a proof of concept to work out if our standard TR7X7 glitching patchbay, individual pitch controls, DAC distortion and decay modifications would work on a HKA modified machine. It turns out everything works perfectly.

Further details on our mods can be found at: https://www.circuitbenders.co.uk/drum...

The HKA sound bank expansion can be found at: https://hkadesign.org.uk/tr707expansi..."

Tuesday, April 13, 2021

CB55 analog drum machine, 16HP eurorack build


video by Jon Petter Skagmo



CB55 is a DR55 clone pcb from circuitbenders.co.uk. You can find addtional posts featuring the CB55 here.

This one was built by http://skagmo.com

"CB55 analog drum machine (16 HP)

This one is popular to mount in Eurorack. I started off trying to make a 28 HP module, but i didn't see the needs for all the modifications/pots I planned, and I thought the module was too large, so I started over and made a narrow (16 HP) MIDI enabled module.
Based on the Circuitbenders CB55 analog drum machine PCB
Cut off the entire trigger conditioning circuit and drilled new mounting holes to allow the PCB to be placed vertically behind a Eurorack panel.
Designed a MIDI and sequencer addon with a PIC18, with a switch on the front panel to start/select predefined sequences, and a DIN-5 for MIDI in. This PCB also has the voltage regulators and power connector, as that was chopped off together with the trigger conditioning circuit.
In addition to the standard volume, tone and accent pots, there are individual volume pots and jack outputs for each of the voices.
Panel was milled from the rear side because I needed to machine some pockets for some protuding tabs on the potmeters, and then flipped over to do the engraving."



Tuesday, August 25, 2020

DOD 512 multi effects with RAM loop parameter adjustments


circuitbenders.co.uk

"Sometimes when you forcibly loop the RAM on an effects unit, the parameter knobs remain active to a certain extent. This is what happens when you adjust the delay time parameter on a DOD512, with the delay RAM contents looping continuously."

Wednesday, August 12, 2020

circuitbenders.co.uk drumBs x3 demo2


circuitbenders.co.uk


"Based on a tweaked E&MM syntom II percussion synth circuit, the drumBs PCB can be built as a standalone percussion box or as a Eurorack module.

Its driven by standard analogue trigger pulses and has controls for:
Decay
Bend (Oscillator frequency & noise filter cutoff)
Pitch (Oscillator)
Cutoff (noise filter)
Resonance (noise filter)
Mix (between oscillator and noise)
Pulse (the attack pulse on the front of the sound)
Roll (the speed of the drum roll function triggered by a gate signal on a eurorack build, or a switch on a standalone build)

On this video the black module is doing the hats, the green one provides the bass drum, and the the red one is producing the clap/snare noise sounds."

Friday, June 12, 2020

Roland ROM card patchbox used with a Roland U110 - TEST1


circuitbenders.co.uk

"It turns out our Roland R8/R8M audio grinding patchbox with the fake ROM card interface works on the U110 as well, and by extension probably anything else that uses the same style ROM cards.
We have another video of it used with a U220 [posted here]

No, its not meant to be musical, its just some random notes looping in a quick test to see what the box could do.

More info at: https://www.circuitbenders.co.uk/fors..."

Monday, May 25, 2020

CIRCUITBENDERS Roland R8M

Note: Auction links are affiliate links for which the site may be compensated.


via this auction

You can find some demos and additional demos in previous posts here.

Saturday, May 23, 2020

Circuit Bent Yamaha PSS-140 Fm Synth

Note: Auction links are affiliate links for which the site may be compensated.



via this auction

"It has the 8 data line switches,a switch to use and external clock in order to change the pitch and a know for a distortion,plus LEDs."

Friday, May 08, 2020

Roland R8/R8M patchbox used with a Roland U220


Published on May 8, 2020 circuitbenders.co.uk

"It turns out our Roland R8/R8M audio grinding patchbox with the fake ROM card interface works on the U220 as well, and by extension probably the U110, MV30, U20 and anything else that uses the same style ROM cards.

More info at: https://www.circuitbenders.co.uk/fors..."


"The circuitbenders.co.uk R8 / R8M percussion grinding patch box is an external patchbay case that plugs into the main unit via the sound ROM expansion ports using a custom sound card connected using a 25 way cable as an interface. This allows the creation of circuit bent digital glitching effects without the need to perform any invasive mods on the machine itself. Just plug in the patch box and be immediately transported to a full on jamboree of wall to wall noise terror!

The patch box itself consist of a 20 way main patching area and three combination patchable switches / patching multiples . Connections made between the patchbay sockets result in the digital drum sample data being temporarily glitched causing all kinds of bizarre percussion warping and digital brutality to be applied to the audio. Connections can be routed through the patchable switches so they can be turned on and off at the flick of a switch, or via the patching multiples in order to connect several sockets to each other at the same time.

The supplied DB25 cable is plugged into the back of the patch box, and is then connected to the sound ROM interface card which is plugged into machine via a ROM expansion card socket.

The patch box can be used with either the R8 or the R8M as the sound engine is identical for both machines. Unfortunately due to the fact that the R8 only has one ROM card slot you can't use other sound cards at the same time as the patch box, but with the R8M it doesn't matter which PCM card port of the three available you use, and the other two can still be used for extra sound cards.

Both the R8 and the R8M are very keen on brutally savage, but also sometimes strangely beautiful distortion sounds. It also excels at strange digital gurgling and shuddering sequenced effects on the longer sounds such as the cymbals and some snares. The R8 and R8M take a little more work than most circuit bent drum machines as many of the possible patchbay connections will produce variations on distortions rather than the common effects found on similar machines, but with a little patience there are plenty of interesting and more complex sounds available."

Tuesday, April 14, 2020

circuitbenders.co.uk drumBs x3 demo


Published on Apr 14, 2020 circuitbenders.co.uk

"Demo for the soon to be available circuitbenders.co.uk drumBs module.

Based on a tweaked E&MM syntom II percussion synth circuit, the drumBs PCB can be built as a standalone percussion box or as a Eurorack module.

Its driven by standard analogue trigger pulses and has controls for:
Decay
Bend (Oscillator frequency & noise filter cutoff)
Pitch (Oscillator)
Cutoff (noise filter)
Resonance (noise filter)
Mix (between oscillator and noise)
Pulse (the attack pulse on the front of the sound)
Roll (the speed of the drum roll function triggered by a gate signal on a eurorack build, or a switch on a standalone build)

On this video the red module is doing the hats, the black one provides the bass drum and 80's electronic drumkit tones, and the green one is producing the clap/snare noise sounds."

Friday, March 27, 2020

The Euterpe Synthesizer Laboratories (E.S.L) Vertice analog filterbank


Published on Mar 27, 2020 rozz3r

"The Euterpe Synthesizer Laboratories (E.S.L) Vertice Analog Filterbank is a unique Italian handmade musical processing device. Here it is, along with an AVP Synth ADS-7 Mk2, a Roland DR-110 (bent by circuitbenders.co.uk), the Electron Model Cycles and finally, itself!"

Tuesday, February 11, 2020

Modified MAM MB33 Analog RETRO Bass Synthesizer w/ Circuitbenders Acid FM Mods

Note: Auction links are affiliate links for which the site may be compensated.
Published on Mar 21, 2017 circuitbenders.co.uk

"MAM MB33 Retro with Acid FM mods: This video shows the filter FM mod modulating the filter cutoff at audio frequencies using the internal square and sawtooth VCO waveforms as FM sources. It also demonstrates the Filter Lock mod that holds the filter and VCA open with no envelope, the resonance boost, and the overdrive mod.

The MB33 retro seems to be designed to slightly distort the output stage at full volume, much like the TB303 did. The Drive mod boosts this distortion savagely for some grungy acid techno sounds."



via this auction

Tuesday, September 24, 2019

TEST SERIES Oto Machines Biscuit Der Oto 3x Kaoss Pad Circuitbenders Sound Design


Published on Sep 24, 2019 Outsider Sound Design

"Sound Design Experiments. Making digital artifacts and noise with OTO MACHINES Biscuit running in Der OTO mode with 2 stock Korg Kaoss Pads and a Circuitbenders modified Kaoss Pad.


The purpose of 'TEST SERIES' is to focus on the sound design possibilities of various gear combinations. This series is not musical nor does it serve as an instructional video. It is all about sound potential.
Please consider supporting this channel by purchasing a sample pack or music download from www.outsidersounddesign.com"

Monday, September 24, 2018

DIY VCS3 Ring Modulator Radiophonic Action


Published on Sep 24, 2018 circuitbenders.co.uk

"A quick burst of noise from a DIY EMS VCS3 ring modulator, using an eastern bloc clone of the original and very obsolete Mullard TAB101 Ring Mod chip"

Tuesday, April 25, 2017

Korg EX-800 Polyphonic Synth in Excellent Condition w/ Circuitbenders Polybeast Mod

Note: Auction links are affiliate links for which the site may be compensated.

via this auction

Tuesday, March 21, 2017

MAM MB33 Retro Acid FM mods


Published on Mar 21, 2017 circuitbenders.co.uk

"MAM MB33 Retro with Acid FM mods: This video shows the filter FM mod modulating the filter cutoff at audio frequencies using the internal square and sawtooth VCO waveforms as FM sources. It also demonstrates the Filter Lock mod that holds the filter and VCA open with no envelope, the resonance boost, and the overdrive mod.
The MB33 retro seems to be designed to slightly distort the output stage at full volume, much like the TB303 did. The Drive mod boosts this distortion savagely for some grungy acid techno sounds."

Wednesday, September 14, 2016

Harmonic Engine DIY PCB - E&MM Harmony Generator clone


Published on Sep 14, 2016 circuitbenders.co.uk

"PCB's can be bought from: http://www.circuitbenders.co.uk/forsa...

The circuitbenders.co.uk Harmonic Engine PCB is a clone of the E&MM Harmonic Generator. This was a project originally designed by Paul Williams, and published in Electronics & Music Maker magazine way back in 1981.The circuit generates a squarewave output at harmonic intervals to the frequency of an input signal.

Thats the theory anyway, the practice is a little different............."

Thursday, August 18, 2016

Circuitbenders Harmonic Engine PCB - Clone E&MM Harmony Generator Kit From 1981


Published on Aug 18, 2016 circuitbenders.co.uk

"Clone of the E&MM Harmony Generator kit from 1981.

The board generates a squarewave at harmonic intervals related to the frequency of the input signal. Its quite tedious and predictable with a monophonic basic waveform as an input, but when you start using more complex sounds and percussion things start getting very strange and nasty. This is processing a bass and percussion loop that fades in at the end."

Tuesday, July 12, 2016

Circuit Bent Yamaha RX7 demo



"Some flat out chewing the furniture lunacy from a circuit bent Yamaha RX7.

The RX7 is very difficult to operate when using the circuit bent mods, but its well worth the effort as you can't get this kind of madness from any other machine, other than the RX7's big brother, the RX5.

For more details see www.circuitbenders.co.uk/drummachine/RX7.html"


Excerpt:

"MODS INCLUDE:

20 way main patchbay: More information and details of our patchbay mods can be found HERE. The RX7 patchbay responds a little differently to most circuit bent drum machines. When patchbay connections are made on the RX7 you find that at least 60% of the sounds are disabled, but the ones that remain are transformed into alien effects like we've never heard before on a bent drum machine. Make a different connection on the patchbay and a different set of sounds are disabled but again, the remaining sounds morph into bizarre digital shimmers and cold percussive hits that are both totally unexpected and unique. Remove all the patch cables and the machine responds as normal again."
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