ARP 4072 VCF yusynth clone - preview (assembled, prior to adjustments)

Published on Oct 1, 2018 Sbranvlztronics

"I've just finished to assemble the ARP VCF 4072 (YuSynth version) with some modifications, this is a preview prior to the adjustments (that will be shown next video). There is no modification to the filter section, I just added an attenuverter to CV2 input, 24db bandpass output and 12db lowpass output."

ARP ODYSSEY AR (Attack & Release) circuit on protoboard and some modifications

Published on Sep 25, 2018 Sbranvlztronics

"A look into a simple and useful control voltage generator circuit, some modifications and breadboard test. A perfect module to build for beginners in DIY electronics and analog synthesizers."

Yusynth ARP 4072 VCF clone bandpass response

Published on Sep 18, 2018 Sbranvlztronics

"In the previous video we tested adding a bandpass output to the ARP 4072 yusynth clone voltage controlled filter. This video shows the frequency response from the lowpass and bandpass outputs."

BANDPASS FOR THE ARP 4072 VCF YUSYNTH CLONE

Published on Sep 16, 2018 Sbranvlztronics

"Adding a bandpass output to the ARP 4072 yusynth clone, just one opamp and a few resistors.
Electronotes EN#85:
http://electronotes.netfirms.com/EN85...

Thanks for watching"

ARP 4072 VCF Yusynth clone on Breadboard protoboard matched transistors, resistors & capacitors

Published on Sep 14, 2018 Sbranvlztronics

"I've built the ARP 4072 VCF (yusynth clone version) in another protoboard, this time using matched transistors (BC560), also matched resistors and capacitors. Next time I will try some modifications to the exponential converter and other little things."

Yusynth ARP VCF 4072 on breadboard - Voltage Controlled Filter

Published on Sep 8, 2018 Sbranvlztronics

"Testing the Yusynth adaption of the ARP VCF 4072 on breadboard. No matched components were used here, it was just a test to listen the ARP VCF sound. I will test again with matched transistors pairs, resistors and capacitors, as the it sounds very nice."

Let them play together - homemade analog modular synthesizers jam

Published on Sep 2, 2018 Sbranvlztronics

"The black modules (left) are the Arduino Clock Divider Logic thing and Arduino CV Quantizer top right is the MSB Modular Synth B. bottom right the Matrix II. The patch uses 8 LFOs, 4 VCOs, 5 ADSRs, 3 VCFs,6 VCAs, 1 VCDelay, 1 S&H. The CV Quantizer receives CV from 2 LFOs and send 1 volt per octave CV to VCOs and VCFs, the Clock Divider Logic thing is responsible for all gates (using 7 of the 8 logic outputs), its tempo is being controlled by CV coming from a Sample and Hold output."

Yamaha QX5 Digital Sequence Recorder (MIDI Sequencer) LCD repair

Published on Aug 30, 2018 Sbranvlztronics

"An old Yamaha QX5 sequencer that was collecting dust for decades, and needed some repair (the LCD was fading). It was cleaned, fixed, and is working. I had only a blue LCD, so now it has a new look.
The soundtrack is the Arduino Clock Divider Logic thing, Arduino CV Quantizer, 3 VCOs, 3 VCFs, 3 VCAs, 3 ADSRs and 2 LFOs (analog modules from Matrix II analog synth and MSB Modular Synth B), everything built here at the 'Sbranvlztronics Labs' :) (watch the other videos in this channel in case you have interest in analog synthesizer modules).
Thanks for watching."

Sbranvlztronics Arduino Clock Divider Logic Thing: Circuitry and Build

Published on Aug 27, 2018 Sbranvlztronics

"Arduino Clock Divider Logic Thing: Circuitry and Build

This is how I made it, old style DIY hand drawn printed circuit boards... The soundtrack is the Arduino Clock Divider Logic thing, Arduino CV Quantizer, 3 VCOs, 3 VCFs, 3 VCAs, 3 ADSRs and 2 LFOs (analog modules from Matrix II analog synth and MSB Modular Synth B), everything built the same manner.
Thanks for watching."

Hippopotamus (another Arduino Clock/Divider/Logic thing test)

Published on Aug 25, 2018 Sbranvlztronics

"MIDI out to PC (drums, bass and other sampled instruments), first clock division output to the Arduino CV Quantizer controlling a basic patch on the Matrix analog synthesizer (VCO, VCF, ADSR,VCA, LFO)."

Arduino Clock Divider Logic Thing Review (for modular synthesizers)

Published on Aug 19, 2018 Sbranvlztronics

"A description of the Arduino Clock Divider Logic Thing module functionality. This module is a clock divider using an ATmega328 microcontroller, a bunch of shift registers, transistors and opamps. The 20 HP panel is made of plastic, behind it there are be four pcbs to accommodate the circuits (all hand drawn and using only thru-hole components...). The divider section has 8 outputs, with division ratios defined in software (1, 2, 3, 4, 5, 6, 7, 8 or whatever wanted). There is a logic section with another 8 outputs, the logic gates and divisions configuration being selected by a potentiometer and a switch (64 configurations, or algorithms). Also one AND and one XOR patcheable gates sharing two inputs, a random trigger output, and a MIDI output. The software can be modified using a FTDI connection on the front panel. The clock can be internal (controlled by a pot) or external, or can be controlled by any external continuous CV (there is an attenuation/inverter pot and an offset pot for this CV), the conditioned CV has its output on panel. And of course a lot of LEDs...
The circuits involved will be shown in another video.

Thanks for watching.

Sbranvlztronics"

Sbranvlztronics Arduino Clock Divider Logic Thing preview

Published on Aug 13, 2018 Sbranvlztronics

"First test of the Arduino Clock Divider Logic Thing module. The thing is driving a Roland SC55 via MIDI (drums and slap bass), and the ADSRs of two analog synth voices (VCO VCF VCA ADSR) on the Matrix II Analog Synth. Pitches for the analog synth are derived from the CV Quantizer (to the right in the video). The drum kit pieces are controlled by the 8 logic outputs from the Arduino Clock Divider Logic Thing."

Introducing the MIDI to CV Converter (MBHP-CV) and a quick repair

Published on Jun 23, 2018 Sbranvlztronics

"The MIDIbox CV can convert MIDI messages to 8 CV and 8 Gate outputs. I added a monophonic analog synthesizer (VCO, VCF, VCA and VCADSR) to the MIDIbox so it can be used stand alone or controlling external analog modules.
I was having trouble with the menu navigation switches, so I replaced them and made this video showing the internals of the MBHP-CV.
A future video will show it at work.

For information about the MBHP (MIDIbox Hardware Platform, by Thorsten Klose) visit: http://wiki.midibox.org/doku.php?id=s...
or http://www.ucapps.de/

Thanks for watching."

Just the drones of boredom times - homemade analog synth

Published on Jun 13, 2018 Sbranvlztronics

"Messing around some modules: 3 VCOs, 2 LFOs, voltage controlled phaser, ladder VCF, voltage controlled delay (Matrix Analog Synth)..

Thanks for watching"

Sbranvlztronics - What is the CV Quantizer?

Published on Jun 1, 2018 Sbranvlztronics

"Here we show some of the features of the homemade CV quantizer based on Arduino (ATmega328).
Enjoy."

Sbranvlztronics CV Quantizer

Sbranvlztronics - Testing the almost finished CV Quantizer . 3rdWorldRack 'Jazz'

Published on May 27, 2018 Sbranvlztronics

"Testing the almost finished CV Quantizer . 3rdWorldRack 'Jazz'"

First video in eurorack format. You can find breadboard build videos for the Sbranvlztronics CV Quantizer in the archives here.

CV QUANTIZER with Arduino 03 - breadboard playing

Published on May 24, 2018 Sbranvlztronics

"Testing the CV Quantizer: ATmega328 microprocessor (arduino) and the DAC0800 digital to analog converters are already on their respective printed circuit boards. The breadboard parts are related to CV input and output level shifting, 7 segment display, indicator LEDs and some signal routing / (de)multiplexing.
The Quantizer is receiving and sending control voltages from / to 2 of my homemade analog modular synthesizers (MSB and Matrix).
Enjoy.
Sbranvlztronics"

CV QUANTIZER with Arduino - 02 - output on oscilloscope, and more features included

Streamed live 1 hour ago Sbranvlztronics

"Testing new features: - 11 scales selected by a potentiometer or CV;
- 3 sources for tempo control: pot, CV or external clock;
- the 2 quantizer channels' tessitura can be independently controlled (low and high range) by pots or CV;
- transposition
- clock output (not tested in this video)

Thanks,

Sbranvlztronics"

Part 1 here. See the Sbranvlztronics label below for more.

Building a CV QUANTIZER with Arduino - 01

Published on May 2, 2018 Sbranvlztronics

"A CV quantizer with Arduino UNO (ATmega328) in its earlier stage of development. In this video the quantizer is doing its thing on two LFO waveforms. There is two independent CV inputs to be quantized, other parameters are voltage controlled also: scale choice, clock, tessitura (low and high note range for each CV input channel). Yet to be implemented are: synchronization with external clocks, MIDI output, if memory won't run out...

Enjoy

Sbranvlztronics"

Matrix Analog Synth by Sbranvlztronics

Published on Dec 29, 2017 Sbranvlztronics

"Sample & Hold sampling a triangle wave and feeding some modules."

See the Sbranvlztronics label below for more.