An interesting and inspiring video showing the history of the prophet-synths. Some of them uses CEM (curtis electro music) chips just like my planned polyphonic synth build.
Converting a MIDI-USB keyboard to BLEx
I’ve started working on a simple project for converting my MIDI-USB keyboard to BLE midi with Arduino. The USB host library for m0 arduino is under development so i wouldnt call this stable at all but i’ll share some code anyway and hope someone find use for it. Components i use: Arduino M0 pro (Or …
video of CV/MIDI-BLE interface for touch keyboard
A small demonstration of my CV (+bluetooth midi) interface for the touch keyboard Why i find the CV / MIDI-BLE interface useful: it takes up minimum space, which i dont have much of i can send for example arpeggios from logic pro or my iphone wirelessly to test tuning on my modular synth prototype-modules (without …
Touch keyboard prototyping
I have been busy lately soldering a MIDI BLE & CV interface dedicated to the touch keyboard. I figured the size factor is great for prototyping / troubleshooting my modular synth stuff. Ill upload code later. I also did prototyping for the actual keyboard
Some information on the as3310 (ADSR generator) and the as3360 (VCA) (aka cem3310 / cem3360)
Some documentations and coverage of the AS3310 i found useful: “The Envelope Shaper” by DigisoundThis is a DIY ADSR design with the as3310 chip, i found it nice because it didnt feel too overwhelming and the function of the components are also explained in text “Electro-music workshops”pdf taken from some magazine which explains how CEM3310/AS3310 …
Working on a tape delay
Inspired by the watkins copi-cat i decided to try and design my own tape delay. Hours later of unscrewing transport parts from different cassette tape decks i started regretting trying this. But too late to look back :-). Some pointers if you want to try out the same thing: One of the harder parts …
m-audio trigger – hacking the 4051 (analog multiplexer)
I salvaged some boards from my old M-Audio trigger finger drum/midi pad, i do this to keep some modules around that might be handy someday. This is the potentiometer board originally for MIDI CC commands. This is a basic but useful foundation for whatever you want to create with potentiometers. Im also hoping this …
Prototyping touch keyboard
I put together a first prototype for a touch keyboard which at the moment sends MIDI through USB. Sometimes when i’m at school i want to write MIDI to recorded songs so the idea is to make a really small portable keyboard for MIDI. But i’ll also probably put together a touch keyboard with CV …
VCA and ADSR for bgw090
A video of testing the ADSR and VCA for the analog bgw090 synth The ADSR is based on the 3310 chip, the circuit is a combination of the one in the datasheet and parts of ETI envelope shaper. VCO is based on as3340 chip and the circuit from the datasheet VCA is based on …
MPK PLAY USB TRAFFIC
Monitoring USB traffic between AKAIs MPK PLAY software (favorite editor) and MPK play mini. I used the software Wireshark for monitoring.The interface between my macbook and USB device is named XHC20.It has to be started via terminal“sudo ifconfig xhc20 UP”I sent a total of 4 messages to monitor Message 1 = ReferenceMessage 2 = Difference …