HAGIWO posts
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山景DSP FX other effects and parameter chanes.
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.https://youtu.be/MiQZzdBPNLY
The Recognition of China's DIY Modular Synth Scene and Hagiwo
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.It seems that there’s a DIY modular synth culture in China as well,so I did some research.I found that several DIYers there ha...
Wavetable generation python code: additive composition, FM, PWM Duty
https://youtu.be/fud-q7li9Hwhttps://note.com/solder_state/n/na0ae5754fa9cPython program for wavetable generation used with $9 Arduino Unison VCO.Enter a value and run it to see a graph of the wavetable.When the graph is closed, a wavetable is generated in text format in the same folder as the program.Please download th...
Event Report: Live Coding by Yamaha Engineers
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 recently been active as a maker as well.He also sells DIY electronic instruments individually and ...
Comparison of the Decay Characteristics of Vactrols Available from China
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...
Maker Faire report : Hamamatsu Micro Maker Faire 2024
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 as Yamaha, Roland, and Sony.Since the city is a hub for musical instrument manufacturers, many of the ...
Study of HOME BAKE INSTRUMENTS HARMONICS
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-PVVNosshttps://home-bake-instruments.localinfo.jp/posts/54038979?categoryIds=4408352Single BoardAll co...
Supplementary Information for SSI2131 VCO
Here's some additional information about the DIY SSI2131 VCO module.https://note.com/solder_state/n/nf47861e3c1edhttps://youtu.be/E4mQAlW-ms01. Reason for Removing the Soft SYNC FunctionThe SSI2131 includes a soft sync function. I experimented with incorporating this feature into the module but decided to remove it...
Envelope follower module PCB
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.Videohttps://www.youtube.com/watch?v=21ZDvu3n3l0Documenthttps://note.com/s...
Study of SSI2140 Q VCA function
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 using Q VCA, the problem of reduced amplitude can be avoided.The sensitivity of Q VCA can ...
Comparison of Vactrol curves
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 hand, LCR0203 has goo...
Links to DIY Synths
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.
Electronic Component Shops in Akihabara
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...
Synthesizer Shops in Tokyo
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: Ikebe Gakki Kenban-do: Deals with new produc...
Report : Tokyo Festival of Modular 2023
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...
Additional information on Bio-feedback module
Here is a photo and schematic PDF and a supplemental video of the common mode noise.https://youtu.be/Wt5gPtadqM0Common mode noise is noise that flows from sources other than the GND line.The linked video shows how noise increases when touching the wall. That noise is the 60 Hz household power frequency.The household po...
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".https://clockfacemodular.com/co...
Small Power supply | 100W , USB Type-C PD
I bought a new power supply.ALIENTEK DP100Small DC power supply that works with USB PD.Rated 30V,5A,100WI 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.https://x.com/magicarchtec/status/1713346352183410786?t=hKL2CBG5...
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 fine, but the quality of the threaded part of the nut is poor. The threads are small and cannot be tightened hard enough.The picture above compares it to a jack I bought from tayda electronics. The qual...
Interesting eurorack DIY parts : Dress NUT
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 anodized nut for 3.5mm jacks.It is thicker than a regular nut, so it hides the thr...
Small project : Simple CV source module
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 past noize module.Output range:A.-1~+1VB.0~+5VC.-10~+10V
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 Japan.It is expected that les...
CV Sample Drum files.
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.Youtubehttps://youtu.be/0U1iYyCgw60Documentshttps://note.com/solder_state/n/nac40740d6a91
V3320 VCF Documents and Pictures
https://youtu.be/AiwqzL1T_vEhttps://note.com/solder_state/n/n372399e1a0f2Schematic PDF, BOM and additional photos of the noise module.I believe that ICs are difficult to buy globally, but are very easily available in Japan.Ideally, film capacitors with stable performance should be used as capacitors, but ceramic capaci...
Noise module Documents and Pictures
https://youtu.be/xWqB_AJDSu4https://note.com/solder_state/n/n8c53c590193fSchematic PDF, BOM and additional photos of the noise module.
SYNC MOD LFO from Modulove
https://modulove.io/https://modulove.io/shop/eurorack/module/kit/lfo-eurorack-low-frequency-oscillator-complete-diy-kit/https://github.com/moduloveSeveral of my modules are available as kits at modulove.SYNC MOD LFO is my Arduino-based LFO module with some added features to make it easier to use.Software can be written...
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 attenuate and will not stop oscillating.2. The output voltage is small, so there is a lot of noise during the ...
Introduction of MIDI-related DIY events held in Japan
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 recognitionTesla coil performanceAcoustic instrument performance by solenoidSynthesizeretc.
How to shoot video
Here is an introduction to the equipment and applications for shooting YouTube videos.1. CameraI use a smart phone.These are cheap Chinese smartphones such as Xiaomi.2.RecordingI use Roland Go mixer as audio interface.Due to the spread of remote work, it has been in short supply since 2020, but I think it is relatively...
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 synths.1. BuchlaSakamoto Ryuic...
