A story is really short: friend asked me to design a mixer/sync splitter which could fit between 2 3PO Pocket Operator cases from Dich Studios, so he can set the output level of each Operator separately. The cooperation was 100% remote and e-mail based, so it was very interesting experience for me. The plan […]
4sum is a simple, monophonic portable audio mixer with 4 inputs and 1 output with separated level controls for each channel. I designed this one for one reason: I did not have any mixer for my Monotrons and other “toys”! (Now you can get it at patch.audio). The design The best way to design something […]
Stay calm, this is simply the beginning Durning my early synth DIY days I made a lot of simplest stuff – all kind of “beginner friendly” projects. They were cool devices to make, but after an initial exciment phase, a reflection came – they make some bleep sound and thats it :/ (It think the […]
All the designs were used only for comparison and not for any commercial purposes. At the beginning… Around a week ago I’ve got a strong internal need to synthesize a sea waves sound (we don’t have an ocean in Poland), as I try to design an updated version of my Binaural Beat Generator. Usually, […]
I had a lot of questions about a black box I use in almost every drum synthersizer demo. This device is just a simple 555 trigger generator, very useful in everyday synth DIY. Why? The question is: what advantage it has over a function generator? first of all, it is very handy – I […]
This a story about squeezing 16 kg of pure analog goodness into childs keyboard. Introduction For a long time i was thinking about modifying some small, cheap toy synth. I wanted to possess an unusual, battery-powered device with a built-in speaker, so I could play in a spare time. Initially, I wanted to make a […]
Stylophone is a portable, miniature sound synthesizer, designed around 1967 and build between 1968 and 1975. In 2006 it was put on market again, with some major modifications. Its most recognizable feature is a way of play – musician uses stylus and a metal keyboard. The similar instruments are Gakken SX150 and Dr Bohm Hobbyton. […]
MFOS Echo Rockit is an small, portable synth / effect processor. The original project can be found on www.musicfromouterspace.com and belongs to Ray Wilson. The device is somehow similar to Korg Monotron Delay, but it has more modulation options. In my construction I have added amplifier with small, but very pugnacious Visaton speaker. In small […]
Resonance mod, LFO to cutoff modulation mod, if you are into Monotron Delay modding you have probably done it or at least know it exists. I wanted to go step further (and keep Monotrons sexy size). Introducing: Monotron Delay Implant! What is implant? It is an additional mini PCB, containing opamp and some passive stuff […]
Every electronic engineer in his life have to build: a strobe light, a clock, adjustable LM317 power supply and guitar effect. I build all previous devices and only effect left to make. I decide to build SansAmp GT2 overdrive – I don’t own a guitar, but I like the hardcore style disorted bass drum sound. […]
I can barely remember when I started this project… After I build Atari Punk Console I decided to build similar 2-knob device. The idea was very blurry – small music box, powered by 9V battery, easy to use and fun. This is how it started and how it is ended. This is the story of […]
Catophonator, first try (15.02.2015) If you ever build cacophonator DIY syntesizer, you probably experienced bleeding from your ears. Catophonator (derived from bunch of screaming cats) is more “gentle” version of cacophonator and allows for some more “musical” results. Or more unmusical, it depends on what you like. The circuit is very simple and synthesizer can […]
Intro Prices for this deadly device starts from 25$ (!)(*) and according to some descriptions, it’s intended for intermediate DIYers (!!). It is a popular project and, i must say, at first sight I thought it is very trashy. One chip, two potentiometers – not very finesse, but I decided to give it a chance. […]
The design has over 30 years – it was created in 80’s by company named Waveform Processing. Synthesizer was sold as a kit for self-assembly . This is probably the simplest analog synthesizer, with all the basic modules, that every “adult” synthesizer has: 1x VCO , 1x VCA , 1x VCF , 1x LFO and […]
