Author: Kevin

Just another soul meandering my way around the Internet ...

EuroRack Test Power Supply PCB Design

I've a few EuroRack power supplies now, and most of them have a few things in common: Require an AC to AC "wall-wart" (typically 12VAC or above). Use diodes for half-wave rectifying and a large bank of capacitors for smoothing the resulting output. Use a 7912 and 7812 for -12V and +12V supply, and some … Continue reading EuroRack Test Power Supply PCB Design →

Forbidden Planet “Krell” Display – MIDI Notes – Part 2

As I mentioned in Forbidden Planet “Krell” Display – MIDI Notes I'm building a simple (in function, not in execution it would seem) MIDI note display out of my Forbidden Planet “Krell” Display. The first attempt showed there is potential, but I was rapidly reaching the limits of what an Arduino could do for me using … Continue reading Forbidden Planet “Krell” Display – MIDI Notes – Part 2 →

Forbidden Planet “Krell” Display – MIDI Notes

This is my first attempt at some kind of MIDI related visualisation for my Forbidden Planet “Krell” Display. I thought I'd start easy and simply map MIDI notes onto the segments and create a simple display. That turned out to be an awful lot more involved than I imagined... In fact, this is quite sub-optimal … Continue reading Forbidden Planet “Krell” Display – MIDI Notes →

Forbidden Planet “Krell” Display

If you're not familiar with The Forbidden Planet, then it is an iconic 1956 Sci-Fi movie with an absolutely ground-breaking soundtrack of "Electronic Tonalities" by Bebe and Louis Barron. In one scene, when the humans visit an alien (the "Krell") science lab there is a large set of display dials around the room that logarithmically … Continue reading Forbidden Planet “Krell” Display →

Multi-Mode MIDI Step Sequencer – CDR Format – Part 3

This post revisits the "CDR format" (CD Rack Format) panel version of my Multi-Mode MIDI Step Sequencer. Part 1 detailed the build and testing of the panel. Part 2 updated and enhanced the Multi-Mode MIDI Step Sequencer code to run on the panel. Part 3 (this post) details the design of a panel using a … Continue reading Multi-Mode MIDI Step Sequencer – CDR Format – Part 3 →

EuroRack 6HP Arduino Mozzi Module – Basic VCO

This is the first project based on my EuroRack 6HP Arduino Mozzi Module. It is loosely based on HAGIWO's Arduino Mozzi VCO Module. https://makertube.net/w/hnocMAhYkajd8nX2vwuR2u Warning! I strongly recommend using old or second hand equipment for your experiments.  I am not responsible for any damage to expensive instruments! These are some previous posts for the main concepts … Continue reading EuroRack 6HP Arduino Mozzi Module – Basic VCO →

EuroRack 6HP Arduino Mozzi Module

This project uses my EuroRack 6HP MCU Experimenter Module to implement HAGIWO's Arduino Nano based VCO. This post describes how to put it together and test the basic functionality. Future posts will look at some code that can run on the module (see the "Sample Applications" section). Warning! I strongly recommend using old or second hand … Continue reading EuroRack 6HP Arduino Mozzi Module →

EuroRack 6HP MCU Pots and Jacks PCB Build Guide

Here are the build notes for my EuroRack 6HP MCU Pots and Jacks PCB designed to be used with my EuroRack 6HP MCU Experimenter Module. Warning! I strongly recommend using old or second hand equipment for your experiments.  I am not responsible for any damage to expensive instruments! If you are new to electronics, see … Continue reading EuroRack 6HP MCU Pots and Jacks PCB Build Guide →

EuroRack 6HP MCU Pots and Jacks PCB Design

This is an add-on for my EuroRack 6HP MCU Experimenter Module to support several different configurations of potentiometers and jack sockets. EuroRack 6HP MCU Pots and Jacks PCB Build Guide Warning! I strongly recommend using old or second hand equipment for your experiments.  I am not responsible for any damage to expensive instruments! If you are new … Continue reading EuroRack 6HP MCU Pots and Jacks PCB Design →