1. CD40106 Oscillator BRAEDBOARD Build and JAM 1|🎶🔌🎹 | #synthesizer #electronicmusic #diysynth
I got a BRAEDBOARD (not a typo) breadboard module for an AE modular synth a while ago. I've only just managed to install it. So I thought I'd try some example circuits out from the AE modular Wiki, just to see if it works ok, and also before I go onto something more complex.
00:00 Intro to the BRAEDBOARD.
01:19 Fitting the module into the synthesizer.
03:55 Building the CD40106 oscillator.
04:46 Trying out with the basic oscillator.
05:56 Adding a filter to it. Altering cutoff and resonance.
06:57 Sequencing the filter cutoff.
08:35 The rest of the jam.
2. CD40106 FM Oscillator 2 |🎶🔌🎹 | #synthesizer #electronicmusic #diysynth
Building a rough CD4106 FM oscillator on a breadboard and making some horrible sounds with it......
Also running it through a sequenced filter and adding some lofi drums.
"Breadboarding and testing some sounds from the Syntom II - a do-it-yourself design from the April 1983 Electronics & Music Maker magazine. Other drum sounds coming from the Roland TR-606, which is also providing a trigger voltage output to trigger the Syntom.
00:00 Triggered by gate pulse from TR-606
00:35 Triggered by piezo drum pad
"Le prototype du séquenceur avance plutôt bien. Dans cette version, il y a seulement la gestion des Gates sur un channel de 1X8 steps (le projet final comportera 4 X 16 Steps). Les boutons Run/Stop/Reset/Manual advance sont OK. Il y a un menu General Settings pour visualisation Tempo, bascule Clock Interne ou Externe (Clock Midi prévu plus tard) ; et un menu pour les paramètres du channel 1 (Mode de défilement / nombre de pas / Cv range)
La prochaine étape consistera à implémenter les potentiomètres de pas, avec quantisation interne + DAC externe pour 1V/octave, puis sélection ratchet à la volée sur pas désiré."
"I used this weekend to create a square wave oscillator that operates with the PIC12F1571, which is an extremely affordable CPU available for just $0.71 each.
Since it was my first time using PWM, I spent an entire day generating a square wave at the desired frequency. The required settings and their interconnections were so complex to me, so that I had to carefully investigate each one as I went, which was quite challenging.
The next day, I spent working on ensuring that the output sound smoothly followed the CV input. To convert the CV input into a frequency assuming 1V/Oct, exponential calculations are typically used. However, the PIC12F1571 has limited program memory, so I couldn't use a floating-point math library. I had no choice but to approximate the calculation of powers of two using a Taylor series expansion and rely solely on integer arithmetic. Initially, I approximated up to the second-order term, but the accuracy was insufficient at higher frequencies. Eventually, I extended the approximation to the fourth-order term, which gave excellent results.
While testing with the Pico3 sequencer, I noticed that when the RATE was set to the maximum, the output failed to keep up with the changes. Increasing the PIC's clock frequency from 1MHz to 4MHz resolved the issue, and it followed the changes without any problems.
At this point, about 70% of the program memory has already been used, so I'm not sure how much further I can expand. At the very least, I want to implement duty cycle adjustment. If possible, I’d also like to use an additional PWM channel to detune and combine the signals for richer synthesis."
"Disclaimer: I actually created Labor together with my friends at Erica Synths and Dr. Shalom D. Ruben, who's a teaching professor for engineering at the University of Colorado. Either way, it's an awesome entry point for anyone looking to get started in circuit design. (Or a great help if you've already disappeared down the rabbit hole.)"
"Get started in circuit design with MKI x ES Labor! Developed in collaboration with Dr. Shalom D. Ruben teaching professor for engineering at the University of Colorado Labor is a fully-featured circuit design playground and a powerful electronics learning tool all in one. Created with the aim of serving as a universal learning tool for electronics engineering Labor enables users to delve into various aspects of electronics design from fundamental concepts to advanced techniques. Whether you're a beginner exploring the basics or an experienced engineer honing your skills Labor provides a versatile platform for experimentation and learning. Create your own filters oscillators envelopes sequencers – and whatever else you can come up with. Or use it to learn the basics by following along with our series of educational DIY kits.
Features a built in dual power supply producing eurorack-compatible voltages, with built-in over current protection for safe experimenting a modular interfacing section with 16 slots for potentiometers, jacks & switches a pulse/triangle/sine oscillator (audio & LFO range) a multi mode envelope generator controlled by a premium push button a buffered variable control voltage source an output amplifier with variable gain a dedicated headphone output and a line-level output for recording, processing and analyzing the signal an expansion slot for installing specialized prototyping tools a protective lid to cover a breadboard. EDU DIY Labor Basic Kit includes:
LABOR Power Supply Unit jumper cables array of interfacing elements like potentiometers, jack sockets, switches EDU DIY Labor Full Kit includes:
LABOR Power Supply Unit jumper cables array of interfacing elements like potentiometers, jack sockets, switches commonly used components (resistors, capacitors, chips, transistors) to start building circuits straight away
We – Erica Synths and Moritz Klein – have developed a series of educational DIY kits under the brand name mki x es.EDU with one specific goal in mind: to teach people with little-to-no prior experience how to design analog synthesizer circuits from scratch. What you’ll find in the box is not simply meant to be soldered together and then disappear in your rack. Instead, we want to take you through the circuit design process step by step, explaining every choice we’ve made and how it impacts the finished module.
NB! All kits in these series are simple and come with extensive user manuals which can be downloaded separately, therefore we will not provide customer support in case your DIY build fails to function or similar."
"This video demonstrates the final version of a 4-bit Linear PCM synthesizer that I have designed and built over about two months. It makes use of mostly Soviet clones of 7400 and 74LS series TTL chips, with no microcontrollers involved. It has a 256 x 4 SRAM chip that allows the user to program whatever waveforms may be desired, with looping capability, and starting at whatever point desired. Most importantly, it is able to be controlled by an external source, for example a keyboard instrument. It also has a frequency doubler circuit. This video is part 2 of 2, showing the finished product.
If you want to skip right to the sounds, go to 27:08"
"Using multiplexers for the inputs, the 2 ADCs of Teensy 4.0, shift registers for the outputs, I am able to sample 16 analog inputs at 44.1kHz each, and output 16 sigma-delta digital signals that can be filtered to produce analog signals up to 50Hz.
I am confident I can improve frequency and resolution of the outputs just with software, and will work on that later. For now this is enough for gates, triggers, CVs and LEDs.
This board is my platform for Eurorack modules, Motherboard 2. Everything will be available and documented on GitHub when I finalize a few more things.
"It’s been a while. I’m back. Here is yet another in the seemingly endless prototypes of the Great Conjunction. I’m testing the out from the sequencers of the GC, feeding the output of the first sequencer via MIDI into the Prismatic Spray. All of this is getting beautified by the Hologram Microcosm."
"I took an MKS50240 Top Octave Synthesizer IC (TOS) and copying from a Lowrey Organ circuit from the 80's made a Digital Cymbal noise Generator.
Lowrey D350. The MKS50240 is obsolete as far as I know. If anyone can source them put it in the comments. I hope to do a part 2 when finished."
"Building DIY ANALOG SYNTHESIZER FROM START TO FINISH
if you'd like to see more videos on this project/livestreams and more
support here :- https://www.patreon.com/lookmumnocomp..."
Note the chapters were not listed at the time of this post. You can skip around using the player controls at the bottom of the video.
"This is a journey into Prototyping. Documenting the transition from a flakey breadboard to a soldered Arduino Uno Sheild solution. Max and Kyma in the background. I spent far too long in @SymbolicSound 's Kyma doing the sound design.
Thanks to @reallyniceaudio for all the advice.
"The Ibanez IMG2010 electric guitar and MC1 MIDI Converter is an old (1986) but good MIDI guitar system. Apart from translating the audio signal frequency and amplitude from each guitar string to MIDI note number and velocity, it provides MIDI program change messages (via panel buttons and/or a IFC60 footcontroller), Hold pedal, a CTL rotary potentiometer and an Arm on the IMG2010 guitar with assignable MIDI control change messages (cc00 to cc32). When controlling modern MIDI rack synthesizer modules, these control change options are a bit limiting, so I decided to start designing an Arduino 'sidecar' expansion MIDI controller to be used in parallel to the IMG2010 & MC1. It can be fun."
"Testing a LFO with a synchronization circuit. The idea is to force the LFO triangle wave output to immediately go to zero volt when receiving a positive gate or trigger at a Sync input. When the gate or trigger at the Sync input returns to zero, the triangle wave output must then always restart with an upward ramp. On this breadboard the reset circuit was implemented with a CMOS analog switch, and the sync control is just a wire to activate it."
