Erica Synths x Richie Hawtin Introduce the Bullfrog XL

video upload by Erica Synths

Updated version of the Bullfrog. You can see find previous posts featuring the original design here including supporting member Quincas Moreira's original Bullfrog Video Manual here.

"Created by Erica Synths & Richie Hawtin, Bullfrog is an educational electronic music instrument designed to captivate and inspire both youth and professionals alike. Bullfrog invites you to unlock musicality while combining the thrill of electronic music production with a comprehensive learning experience.

Bullfrog XL is designed specifically for teachers to use in front of the classroom and it expands the concept of the regular Bullfrog by inflating its size by a factor of 3 (literally!).


Features:

Fully analog design
Highly accurate voltage controlled oscillator (VCO) that tracks great over 8 octaves
Manually adjustable and voltage controlled waveshapes – sine-shark fin and pulse wave with pulse width modulation (PWM)
Zener diode-based noise generator
Resonant lowpass voltage controlled filter (VCF)
Voltage controlled amplifier (VCA) with adjustable offset
Delay effect with adjustable delay time and feedback amount
Two looping attack-sustain-release envelope generators (EG)
Sample & Hold circuit with an individual clock
Attenuverter
Slew processor with adjustable slew time
Two buffered splitter circuits
Two channel oscilloscope
6.3 mm jack sockets
Manual gate button
Gate and Trigger out
Voice card slot
Built in speakers
DIN5 MIDI input
USB connector
Keyhole slots on the rear panel
Dimensions (mm): 820x505x65 (250 with the side panels)
Mass: 8,3 kg

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Befaco Hexmix Series - Part 3: The Hexpander

Published on Feb 6, 2018 Synth Diy Guy

"Part 3 of my series of reviews on the Befaco Hexmix System. Overview, unboxing, timelapse of construction and demo patch.
Music and Video by Quincas Moreira.
Special thanks to Befaco for supplying the kit!"

All parts here.

Chord Organ is Alive

Published on Mar 29, 2017 Quincas Moreira

"fresh off the bench, the Music Thing Modular Chord Organ, my next Kit Review"

Erica Synths DIY Bundle II Part 1 : The VCO

Published on Sep 25, 2017 Synth Diy Guy

"Part 1 of my series on the Polivoks Inspired complete 84hp DIY Eurorack System by Erica Synths. This is an introduction to the whole project as well as an in depth look at the VCO specifically."

Update:

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Kit Overview #34 - Majella VVCA

Premiered 23 minutes ago Synth Diy Guy

"A super cool VCA module with velocity CV inputs!
A great beginner SDIY project too :)

Get yours at the best stores in Eurorack DIY, or directly here:
https://majella-audio.com/product/dua...

Background music: Hallowed Beach by Quincas Moreira, available royalty free from the Youtube Audio Library:
https://www.youtube.com/audiolibrary/..."

Note this is the first Majella post on the site. Some audio demos and additional details:

"This is a do it yourself (DIY) full kit! For an assembled module click here.

This kit is designed to be as easy as possible for the DIY community. It is a very good kit for starting DIY’ers because of these features:

through hole components
symmetrical printed circuit board layout
low part count
no trimming/tuning required.
Only basic soldering skills and equipment are required!

Module description:

The VVCA is a dual linear VCA can be used for audio and CV signals.

The VVCA features two individual VCA’s. Each VCA behaves just like any other normal VCA when there is no cable connected to the velocity input. The velocity input offers velocity control over the CV input level, which means: The output level can be controlled by CV and Velocity.

This module uses the 5V rail (16 pin eurorack connector)!

Included items are:

Panel (128.5 x 20 x 2 mm)
PCB
All components (Resistors, capacitors, IC’s, etc.)
Connectors + hex nuts
montage screws
Rack crash protectors
16 pin power cable"

Pleidean Strike

Pleidean Strike from Quijote Cinemusica on Vimeo.

"Another 'nearly' generative piece representing cosmic battle sounds. It was a fine self-playing patch but I couldn't resist tweaking a few knobs. Done on the Weird Synth 001, a bananafied 4.5U DiY Yusynth/Mfos modular music box."

via Quincas Moreira on The MATRIXSYNTH Lounge

Erica Synths DIY Bundle II Part 2 : Polivoks VCF, EG and Mixer

Published on Oct 3, 2017 Synth Diy Guy

"Part 2 of the special series on the Erica Synths Polivoks inspired DIY Bundle II. The three easiest modules to build: VCF, EG and Mixer.

PDF: Suggested Method for building the Bundle: https://www.dropbox.com/s/1ykvnpvy1qk...

Music and Video by Quincas Moreira"

Part 1 here.

Synth Wizards Episode 4: Desert Island SQ-80

Published on Dec 28, 2017 Syntaur

"The Syntaur team takes the Ensoniq SQ-80 from an all-around mainstay to an absolute essential, and gains a synth wizard in the process. Featuring a rare interview (well, sort of...) with Ensoniq founder Bob Yannes, and music by Quincas Moreira and Jeffrey Koepper."

https://syntaur.com

Kit Review # 13 - Joranalogue Test 3

Published on Nov 14, 2017 Synth Diy Guy

"In depth review of the cool new Volt and Amp meter module from Joranalogue, the Test 3! Great tool for builders, developers or just Eurorack users to measure and plan for power usage in their systems.

Music and Video by Quincas Moreira"