Showing posts with label DIY. Show all posts
Showing posts with label DIY. Show all posts

Tuesday, October 31, 2023

Sequential Drumtraks Drum Machine Repair

video upload by gstormelectro

"Audio + Video by G-Storm Electro c. 2023

Today I'm investigating issues with a Sequential Drumtraks. While it is making sounds, the display is glitching out and the control functions are not working. In the end it was only incidental I was able to get it working again, for reasons I don't fully understand. The same phenomenon happens with my Drumulator, that's how I knew what to check for. It's my hope posting this video, that someone more knowledgable will be able to comment about this phenomenon.

This video is posted for general information about my experiences. Always observe safety working on electronics, and never tinker around inside power supplies without first unplugging the power cord. If you're not sure about anything, there's no shame in taking your instrument to a qualified service technician.

Since filming the video, I've discovered the batteries are still made in Japan. Also, the numbers on the battery may or may not necessarily be a date code. My new battery says 2132, so maybe it was made in 2021? Since the manufacture date and date installed may differ by a couple of years, I now write a date on the battery with a sharpie when I install it."

0:00 Intro & Symptoms
0:28 Power Supply investigation
2:10 Battery
2:28 Data Bus Check
4:08 About Cleaning IC pins
4:28 Last ditch effort and suddenly it's working???
5:38 Short demo

G-Storm Electro:

Sunday, October 29, 2023

Chunky Mother-32

video upload by Love Hultén

"Custom commission incl Mother-32, TR-08, Microcosm and a pull-out keybed

Sorry about the distorted audio here and there, my new camera have a very sensitive input"

Mapper: map01/12/21 Chaotic Synthesizer Prototype Demonstration

video upload by Ryan Gaston

"A demonstration of map01/12/21, an electronic musical instrument that focuses on random, chaotic, and gestural interconnections between its constituent structures. map01/12/21 has been succeeded by map02/21, which offers nearly identical functionality; this video serves as an archival demonstration of the older prototype.

map01/12/21 combines three modules: the map01 Delta Scan Mapping Interface (a chaotic audio generator), the map12 Windowed Temporal Drag Processor (a dynamically re-writable audio buffer), and map21 Multiple Vector Source + Translation Matrix (a MIDI controller that combines two joysticks, sixteen random number generators, a timing generator, and a data routing matrix). map01 and map12 have been abandoned in favor of the newer map02 Delta Scan Mapping Interface + Windowed Temporal Drag Processor, which combines their functionality into a single device.

This improvisational demonstration highlights many of the unique possibilities of each of its constituent parts; ranging from blasts of noise to whistling tones, stuttered repeats, aliasing, goofy computer-generated bleeps, and gesturally-controlled chaos."

Additional demos:

Wednesday, October 25, 2023

Eigenbau: Polyphoner Synthesizer | Eindrücke & Sound | #SynthDIY #Arduino Mozzi Based DIY Synth

video upload by

Audio demo starts at 13:33.

Einlteitung: 0:00
Arduino Projekt: 1:16
Polyphonie: 3:45
Mono Modus: 6:25

Decay: 8:40
Resonance: 10:08
LFO: 11:04
Filter: 12:03
Volumen: 12:40
Oktave Up / Down: 12:55

Soundbeispiele: 13:24

Outro: 15:35
Ich freue mich, euch mein neustes Projekt, einen polyphonen Synthesizer mit insgesamt 3 Stimmen vorstellen zu dürfen. Wichtige Infos und Libraries, die zum Projekt beigetragen haben findet ihr hier:

Mozzi - Arduino:

See the Mozzi label below for more.

Friday, October 20, 2023

Roland TR-505 Replacement Back Plate for 3D Printers

This one is in via BD594

"I thought I would share this with you and your readers. I recently purchased a Roland TR-505 drum machine and sadly the back panel was missing. I hear this is a very common issue so I designed one in TinkerCad. The 3D files are free for download and anyone with access to a 3D printer can make one. thank you"

You can find it here.

Wednesday, October 18, 2023

3D printed modular synth cases with STL and GERBER files free! 10-17-23

video upload by Pepper and Casey's RV

Get the files for these cases here:
Bus board version -
make your own bus version -
single bus skiff -
no bus skiff -
bus board gerber files -

Make A Modular Synth Lunchbox Case CHEAPLY

video upload by Hack Modular

Hack Shop:

Thursday, October 12, 2023

Electro Technique TSynth (DIY Synth)

video uploads by lemorgue

"Synth: Electro Technique TSynth (DIY Synth)
Drums: Ableton Live Kit
DAW: Ableton Live 11

Very nice DIY Synth based on a Teensy 4.1 Board.
More information here:"

sktch-113: Electro Technique TSynth (DIY Synth) #1 (no talk)
sktch-115: Electro Technique TSynth #2 (no talk)
sktch-116: Electro Technique TSynth #3 (no talk)
sktch-117: Electro Technique TSynth #4 (no talk)

See the ElectroTechnique label for addtional posts.

Hack Modular at Machina Bristronica Synth Festival!

video upload by Hack Modular

Hack Shop:

Tuesday, October 10, 2023

Error drum 2

video upload by errorinstruments paul tas

"Simple, affordable, crunchy. Available in DIY workshop, but also assembled from the website.  this will be released as a workshop in Leipzig 28th of October. And in Tokyo sooon"

Sebastian - The MIDI crab

video upload by Love Hultén

"Solenoid based MIDI crab combined with a customized Volca FM2 synth"

Monday, October 09, 2023

DIY Mystery Modular

via this auction

If you have any ideas on this one, feel free to leave a comment.

208 Timbre by Triglav Modular - Demo & Overview

video upload by Stazma

"Today I'll be showing you the 208 Timbre wavefolder by Triglav Modular. It is a recreation in eurorack of the "timbre" circuit from the classic Buchla Music Easel sound module, the model 208 "Stored Program Sound Source". It's a very simple module but it does sound superb and the look and interface are a joy to use.

Have fun!

00:00 Intro
01:10 Overview
03:30 Basic Patching
06:17 Modulation Index
08:10 Mixing signals into it
10:50 Audio rate modulation
14:42 Saturation for Drum Machines
18:34 End Talk"

See this post for additional details.

Sunday, October 08, 2023

BMC105 JFET Phaser

Demonstration video upload by boogdish

BMC105 schematic walkthrough

via Barton Musical Circuits

"This module is a 12-stage phaser or all-pass filter with resonance control. When the filter’s output is mixed with the input, this creates notches in the frequency response. Classic phasing sounds are achieved by modulating the frequency control with an LFO. It can also be used as a 4-stage filter by removing the top PCB and jumpering pins 1 and 2 of the pin connectors together.

This module uses two circuit boards sandwhiched together. It's designed for 12V systems and can be easily modified for use with 15V systems."

BMC96 4LFO Demo/Jam

video upload by boogdish

"Demonstration/Jam using a new synth module. Other modules used are BMC018 Analog Drum, BMC100 Deluxe DAN and BMC074 Att-Off-Inv

To learn more or get a PCB, please visit"

via Barton Musical Circuits

"This is four LFOs in one module to effeciently add more up and down to patches. Each LFO has a range of 0.04 to 55hz and triangle/square output waveforms.

This module is designed for 12V systems but can be used with 15V systems by adjusting 8 resistor values."

MSW SY-1 / Pearl Syncussion Modifications

video upload by Maffez Synthmods

"Got the Syncussion recreation by Michigan Synth Werks recently and could finally go fully in with modifications, something I would have never dared to do with my old Pearl SY-1. On this page here you find a documentation of DIY modifications for this iconic drum synthesiser (including filter resonance, vco hard sync, and oscillator mode switching at audio rates):"

Saturday, October 07, 2023

The Science Organ part 2 - Adding the Monotrons and Percussion Synths

video upload by R.O.T. Studios

"I add the missing synths and fix a bunch of issues. It's coming along great! next up will be the effects."

[$23] DIY eurorack modular synth DSP Chorus & Reverb FX | with ANALOG DEVICES Blackfin DSP IC

video upload by HAGIWO

"My 72nd original eurorack modular synth DIY projects.
ANALOG DEVICES Blackfin DSP development board based Chorus & Reverb FX module.
Since it uses a development board that is only available in Japan, it may not be of much help.

working documents ( schematics , code)"

Friday, October 06, 2023


video upload by Synthesizer Home

Thursday, October 05, 2023

Thomas Henry Mega Percussive Synthesizer & SN Voice Synthesizer Eurorack Modules w/ Colored Knobs

Mega Percussive Synthesizer via this auction

"I am a professional electronics engineer and I built this personally. The sounds that you can make with this are phenomenal! For more information see the link below. [here]"

SN Voice Synthesizer via this auction

"I am a professional electronics engineer and I built this personally. This is very old school as it uses the extremely hard to find SN76477 IC which was very popular in 1970s and 80s video games (think space invaders). The sounds that you can make with this are phenomenal! For more information see the link below. [here]"


Patch n Tweak
Switched On Make Synthesizer Evolution Vintage Synthesizers Creating Sound Fundlementals of Synthesizer Programming Kraftwerk

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