Synth Tech - Eurorack Power Supply Design

Published on Feb 16, 2015 shiftedphase

shiftedphase is Andrew Kilpatrick of Kilpatrick Audio.

"Here is a video explaining the DSupply power supply design that I did back in 2013. Some basic theory of switch-mode power supplies is explained here.

This is a small and efficient power supply that has very low noise and excellent performance. If you are interested in building or buying them please email me: ak@andrewkilpatrick.org. Finished boards are available as part of a Eurorack rail system. I don't sell these but can put you in touch."

Synth Tech - Dual Envelope Generator

Published on Jan 2, 2016 shiftedphase

"Check out the D101 Dual Envelope module that you can build yourself. The basic circuit design is explained and the construction of the module is shown. http://www.dintree.com"

Andrew aka shiftedphase is the man behind Kilpatrick Audio.

K4815 Pattern Generator Prototype - Elmood

YouTube via shiftedphase — April 21, 2010 — "A quick introduction to the K4815 modular synth pattern generator by Andrew Kilpatrick. Soon to be released in a Eurorack format. This is an early beta showing some of the basic functionality. More to come..."

K4815 Pattern Generator Prototype - Demo 2

"shiftedphase — April 30, 2010 — A quick demo testing the MIDI clock function of the K4815 Pattern Generator prototype. Here you can listen to some of the different clock divisions, patterns and see just how fast this thing can go. The synthesizer playing is a Roland Juno-2."

Elmood Modular Synth 1.0

YouTube via shiftedphase — February 14, 2010 — "My self-designed and self-made modular synthesizer as of Feb. 2010. Each of the current modules are demonstrated and explained."

My Lab

shiftedphase — October 27, 2009 — A short tour of my lab.

Synth Tech - Quad CV Processor

Published on Sep 7, 2016 shiftedphase

"Here is a look at the D105 Quad CV Proc that you can build. Full info is available at: www.dintree.com Check out the video for an explanation of how the circuit works."

See the Dintree label below for more.

Laser Light Show + Radiator Laser Synth

Published on Jan 20, 2020 Shiftedphase

"Here's a quick overview of a project I've been working on: the Radiator Laser Synthesizer. If you want to know about the actual project check out: https://www.neoncaptain.com/

If you think this is interesting let me know and I'll make some more videos covering the various aspects of laser light show technology."

ElmGen DSP Development Tool

YouTube via shiftedphase | January 13, 2011 |

"ElmGen is a DSP development tool for the Spin FV-1 effects processor IC that I developed back in 2008. I finally decided to release it for free. It includes a built-in hardware simulator for the FV-1 and an EEPROM programmer that uses an Arduino to flash real chips. All the software is free"

Synth Tech - Output Mixer

Published on Sep 4, 2016 shiftedphase

Some DIY talk with the man behind Kilpatrick Audio.

"Here is a video describing the design of the Dintree D102 Output Mixer. You can download schematics and learn more at: www.dintree.com

Note in the section describing the meter circuit I state that the output of the rectifier is positive... it's actually negative and gets inverted by the integrator, but the overall effect is the same."

VCO Calibration Software

YouTube via shiftedphase | July 13, 2010

"A simple piece of software I wrote to help with modular synthesizer VCO design and calibration. The software uses the sound card as well as the K1600 MIDI Converter from Kilpatrick Audio."

D106 Step Sequencer Demo

YouTube Uploaded by shiftedphase on Sep 2, 2011
"A little fun module I made for my system."

STM32 Nucleo Boards

Published on Oct 15, 2018 Shiftedphase

"Here's an overview of the NUCLEO boards available from ST for easily using various STM32 chips. I also briefly show the STM32CubeMX software which is very useful for planning the pinout and setting up the peripherals in the chip."

DIY with Andrew Kilpatrick of Kilpatrick Audio.

Synth Tech - Quad VCA Design

Published on Feb 20, 2015 shiftedphase

"In this video the Dintree D100 Quad VCA circuit which uses the SSM2164 VCA chip. You can download the schematic from: www.dintree.com"

Synth Tech - Four Vs

Published on Sep 6, 2016 shiftedphase

"This video explains the Dintree D104 Four Vs, a very simple manual voltage generator. You can download schematics for this and other useful synth DIY circuits at: www.dintree.com"

Synth Tech - Step Sequencer & Slew

Published on Sep 14, 2016 shiftedphase

"Check out the D106 Step Sequencer module that you can build yourself. Schematics and code are available at: www.dintree.com

In this video Andrew will walk you through the overall operation of the module and how the circuit works."

Synth Tech - Slew

Published on Sep 14, 2016

"This video describes the D107 Dual Slew module. You can build it yourself. Info is available at: www.dintree.com"

Electronics Tech - SPICE Basics [Used to Design the Analog Circuits on the Kilpatrick Audio Phenol]

Published on Feb 26, 2015 shiftedphase

"If you've never used SPICE before, or haven't even heard about it then this video will give you a very basic introduction. Circuit simulation is a great way to learn about electronics and try out circuits before building them for real.

I recommend using LTSpice which is free and available here: http://www.linear.com/"

Kilpatrick Envelope Follower Test

Published on Mar 8, 2017 shiftedphase

"A quick video I made a few years ago while working on the Kilpatrick Audio K9 Dynamic Filter module. Just some tests, but maybe you will find it interesting. :)"

CR-68 MIDI Input

YouTube via shiftedphase — February 03, 2010 — "A quick overview of the MIDI input circuit I built for the Roland CR-68 drum machine."

Modular Synth Demo Video Test

YouTube via shiftedphase | Feb 27, 2011 |

"Here's a quick video testing a new camera. I'm messing around with my K4815 Pattern Generator and a pair of K3020 Dual VCOs. This was mostly a test to see the quality of the audio/video and play around with Vegas for editing. More demo videos will be coming soon."

Modular Synth Jam 1315598400

YouTube Uploaded by shiftedphase on Sep 9, 2011

"Some sounds I came up with when trying out my newly configured modular synth rack. I'm using the K2579 Step Sequencer to generate melodies, and using 2x K3020 Dual VCOs for both making sounds and providing LFOs. I've got an auto-panner effect hooked up as well.

New modules in the system this time are my DIY slew limiter, step sequencer, CV processor, envelope generator, VCA, mixer, reverb / delay, and voltage source. Most of them are used in this patch."

MIDI Converter Prototype 3 Channel Test

YouTube via shiftedphase | August 05, 2010

"Here is a test of the MIDI to CV converter I'm working on playing a Bach 3-part invention. Two MIDI converters drive 3 voices."