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HAGIWO posts

山景DSP FX other effects and parameter chanes.

HAGIWO post 山景DSP FX other effects and parameter chanes. from patreon

The Chinese DSP reverb module used in the 山景(mountain view) DSP FX Pitch Shifter & Reverb can be changed in terms of effect types and parameters.

Using the APCWrokbench software, the effects can be changed in real time.

The changed effects and parameters can be saved in the module.

2024-11-23 16:50:39 +0000 UTC View Post

The Recognition of China's DIY Modular Synth Scene and Hagiwo

HAGIWO post The Recognition of China's DIY Modular Synth Scene and Hagiwo from patreon

Recently, a modular synth event was held in Beijing.

https://modularcommune.com/

I was thrilled to hear that a Chinese DIYer showcased the Raspberry Pi Pico VCO that I had created at the event.

2024-11-13 15:09:33 +0000 UTC View Post

Wavetable generation python code: additive composition, FM, PWM Duty

https://youtu.be/fud-q7li9Hw

https://note.com/solder_state/n/na0ae5754fa9c

Python program for wavetable generation used with ...

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Event Report: Live Coding by Yamaha Engineers

HAGIWO post Event Report: Live Coding by Yamaha Engineers from patreon

I attended a live coding performance held in Hamamatsu City, where YAMAHA's headquarters are located.

https://kamoeartcenter.org/events/20240901-loopian/

The artist "Masahiko Hasebe" is a Yamaha engineer and has rece...

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Comparison of the Decay Characteristics of Vactrols Available from China

HAGIWO post Comparison of the Decay Characteristics of Vactrols Available from China from patreon

Vactrols (analog photocouplers) are becoming increasingly difficult to produce due to the harmful chemicals used in their manufacturing, making them limited and expensive components. However, vactrols produced in China are available globally through platforms like AliExpress at a low cost of around $1 per piece.

I measu...

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Maker Faire report : Hamamatsu Micro Maker Faire 2024

HAGIWO post Maker Faire report : Hamamatsu Micro Maker Faire 2024 from patreon

A small maker fair event was held in Hamamatsu, Japan, the home of Roland and Yamaha.

https://makezine.jp/event/makerfaire/hmmf2024/

There were 39 booths, and despite its small scale, it was sponsored by companies such a...

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Study of HOME BAKE INSTRUMENTS HARMONICS

HAGIWO post Study of HOME BAKE INSTRUMENTS HARMONICS from patreon

HOME BAKE INSTRUMENTS (HBI), known for creating gadget synthesizers in Japan, has uniquely ventured into selling Eurorack modules. This is an introduction to their very distinctive assembly method.

https://youtu.be/eqm-PVVNoss

2024-06-30 06:17:57 +0000 UTC View Post

Supplementary Information for SSI2131 VCO

Here's some additional information about the DIY SSI2131 VCO module.

https://note.com/solder_state/n/nf47861e3c1ed

https://youtu.be/E4mQAlW-ms0

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Envelope follower module PCB

HAGIWO post Envelope follower module PCB from patreon

Gerber data, schematic and BOM for the Envelope follower module PCB used in making the opto compressor.

The envelope follower circuit can function as a modular synth module on its own, but it also has its uses in compressor, wah, level meter, etc.

Video

2024-05-05 07:07:43 +0000 UTC View Post

Study of SSI2140 Q VCA function

HAGIWO post Study of SSI2140 Q VCA function from patreon

Supplemental video for SSI2140 VCF.

One of the useful features of the SSI2140 VCF IC is the Q VCA.

Transistor ladder VCFs have the problem that when the resonance is increased, the amplitude of the original audio becomes smaller.

By ...

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Comparison of Vactrol curves

HAGIWO post Comparison of Vactrol curves from patreon

Vactrol is one of the parts that is difficult to obtain.

We compared LCR0203, which is inexpensive and widely distributed, and NSL-7053, which is used in some modules.

The voltage attenuation characteristics are clearly different.

NSL-7053 has near-instrument-like damping characteristics.

On the other ...

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Links to DIY Synths

HAGIWO post Links to DIY Synths from patreon

Article from my BLOG.

I have updated the links to DIY synthesizer circuit examples, knowledge and inspiration.

The articles are in Japanese, but many of the links are in English.

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Electronic Component Shops in Akihabara

HAGIWO post Electronic Component Shops in Akihabara from patreon

During my visit to the Tokyo Festival Of Modular, I also toured electronic component shops in Akihabara, Tokyo.
Akihabara is well-known for its shops related to anime, games, and a wide array of electronic components.
While it's easy to purchase electronic components online, the unique underground vibe of Akihabara's ...

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Synthesizer Shops in Tokyo

HAGIWO post Synthesizer Shops in Tokyo from patreon

During my visit to the Tokyo Festival Of Modular, I took the opportunity to explore several synthesizer shops in Tokyo. Given that these shops are concentrated in certain areas of Tokyo, it's possible to visit all of them within three hours.

Here are the stores I visited:

  1. Ikebe Gakki Kenban-do: Deals with ne...

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Report : Tokyo Festival of Modular 2023

HAGIWO post Report : Tokyo Festival of Modular 2023 from patreon

I attended the Tokyo Festival of Modular (TFOM) on November 25, 2023.
TFOM is Japan's biggest event for modular synths, featuring exhibitions, sales from modular synth makers, and live performances, among other things.

Due to the impact of the novel coronavirus, the event had downscaled in the past two years, but it...

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Additional information on Bio-feedback module

HAGIWO post Additional information on Bio-feedback module from patreon

Here is a photo and schematic PDF and a supplemental video of the common mode noise.


https://youtu.be/Wt5gPtadqM0 

Common mode noise is noise that flows from sources other than the GND line.

The linked video shows how noise ...

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Weak Yen, Time to Buy Japanese Modules!

The dollar-yen rate is 150yen/$. This is the lowest level in 25 years.
Now is the best time to buy modules from Japan.


There are two recommended ways to buy.


The first is to buy new Japanese modules from authorized dealers.
I recommend "Hikari Instruments" or "Centre village".

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Small Power supply | 100W , USB Type-C PD

HAGIWO post Small Power supply | 100W , USB Type-C PD from patreon

I bought a new power supply.

ALIENTEK DP100


Small DC power supply that works with USB PD.

Rated 30V,5A,100W

I bought it at Aliexpress for $53.


It is made in China, but the quality is good.

A review of the disassembly can be found at the X post in the link below.

...

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Jack Quality

For my project I am using very cheap jacks bought from aliexpress. The price is less than 10 cents per unit.


They work fin...

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Interesting eurorack DIY parts : Dress NUT

HAGIWO post Interesting eurorack DIY parts : Dress NUT from patreon

電氣美術研究會(EARS :Electronic Arts Research Society), a Japanese DIY modular synth parts store, carries several original products.

https://ears-modular.com/ 

One of the products currently under development is a dress nut.
This is an...

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Small project : Simple CV source module

HAGIWO post Small project : Simple CV source module from patreon

I have made a CVsource module.
It does not have enough features to make a video, so I will publish it on patreon.

4HP , 3 outputs.
Output voltage is adjusted by POT.

The front panel and control pcb are appropriated from the pas...

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Arduino uno r4

Arduino uno R4 is now available.

It is equipped with an MCU made by Renesas Electronics, and its faster processing and DAC show great potential.

With 5V I/O and many ADCs, the MCU is easy to use for modular synths compared to the Raspberry Pico.


A small Arduino R4 compatible board was sold in Japa...

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CV Sample Drum files.

HAGIWO post CV Sample Drum files. from patreon

Schematic PDF, BOM,additional photos,Gerber data, and arduino program files.

Gerber data contain 3 PCB files , front panel , control PCB , and main PCB.
Front panel is no silk data , only outline data.

Youtube
https://youtu.be/0U1iYyCgw60 View Post

V3320 VCF Documents and Pictures

HAGIWO post V3320 VCF Documents and Pictures from patreon

https://youtu.be/AiwqzL1T_vE 

https://note.com/solder_state/n/n372399e1a0f2

Schematic PDF, BOM and additional photos of the noise module.


...

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Noise module Documents and Pictures

HAGIWO post Noise module Documents and Pictures from patreon

https://youtu.be/xWqB_AJDSu4

https://note.com/solder_state/n/n8c53c590193f 

Schematic PDF, BOM and additional photos of the noise module.

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SYNC MOD LFO from Modulove

HAGIWO post SYNC MOD LFO from Modulove from patreon

https://modulove.io/

https://modulove.io/shop/eurorack/module/kit/lfo-eurorack-low-frequency-oscillator-complete-diy-kit/

2023-06-30 14:56:08 +0000 UTC View Post

Idea : Passive claves drum circuit

Proposed claves percussion circuit with gate input as power source.

I will not assemble it because of a few bad points.

1. It is difficult to adjust the frequency. If the impedance is out of balance, it will not attenuat...

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Introduction of MIDI-related DIY events held in Japan

HAGIWO post Introduction of MIDI-related DIY events held in Japan from patreon

A DIY event limited to MIDI equipment was held in Japan in April 2023.

I did not participate, but here are some articles in Japanese.


Sequencer with image recognition

Tesla coil performance

Acoustic instrument performance by solenoid

Synthesizer

etc.

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How to shoot video

HAGIWO post How to shoot video from patreon

Here is an introduction to the equipment and applications for shooting YouTube videos.


1. Camera

I use a smart phone.

These are cheap Chinese smartphones such as Xiaomi.


2.Recording

I use Roland Go mixer as audio interface.

Due to the ...

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Ryuichi Sakamoto and the Modular Synth

On March 28, 2023, the Japanese musician Ryuichi Sakamoto passed away.

I was influenced by him and started studying electronics and playing music.

My modular synth activities have their roots in Ryuichi Sakamoto.


I would like to introduce the relationship between Ryuichi Sakamoto and modular synth...

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