Racks

• https://en.wikipedia.org/wiki/Rack_unit
• Schroff Design Guide

Modular

• Modular Grid
• https://en.wikipedia.org/wiki/CV/Gate

Eurorack

• Doepfer’s DIY page
• Eurorack format Mechanical details Doepfer A-100 Mechanical details
• Eurorack Unit/HP Converter
• Wikimodules (FR)
• Eurorack Rails DIY Guide
• Tiptop Audio Z-Rails
• Elby Designs – EuroSynth – FracRak Comparisons

1U Eurorack

• intellijel Mechanical Specifications
• Pulplogic 1U Tiles

MIDI

• A simplified guide to TRS MIDI
• MIDI CC & NRPN database (Example: KORG minilogue xd)

Cool Synths, blogs…

• Music From Outer Space
• The ASM-1 homepage
• HAGIWO/ハギヲ
• 音源とオーディオの電子工作 (Construction of Electronic Audio and Sound sources)
• Etude des racks RSF – EXPANDER 1
• Schematic archives (RSF Kobol…)

General Electronic Topics

• Old Electronic Magazines PDF Scans
• Elliott Sound Products

Electronic CAD

• KiCad – A Cross Platform and Open Source Electronics Design Automation Suite
• http://gerblook.org
• https://tracespace.io (exports realistic SVG pictures)
• Gingerbread is a tool that helps convert artistic drawings to PCB
• WaveDrom draws your Timing Diagram or Waveform from simple textual description.

Components

• JLC PCB SMD Assembly Component Catalogue
• SVG integrated circuits on WikiMedia
• resisto.rs (Resistor color bands)
• Resistor color code (image from wikipedia)

Electronic Design Tools

• Falstad’s Circuit Simulator
• Okawa Electric Design – Engineering Design Utilities
• Electronic references @ “hyperphysics”

PCB Design References

• How to calculate PTH hole and pad diameter sizes

Mechanical CAD

• FreeCAD
• KiCad StepUp – FreeCAD WorkBench to help in Mechanical Collaboration between KiCad EDA and FreeCAD
• SheetMetal – Simple sheet metal workbench for FreeCAD
• Fasteners – FreeCAD workbench to add/attach various fasteners to parts

Microcontroller

• Atmel AVR Fuse Calculator
• AVR Fuse Calculator
• Dual PWM Circuits

Service manuals and schematics

• ElektroTanya

Various topics

Arduino projects

• 0.96インチOLEDを使ったオシロ

Connectors

• DuPont and “DuPont” connectors

Visualization of global weather conditions

• http://earth.nullschool.net/
• Blitzortung.org – Live lightning maps

Plotter Art

• Turtletoy (Example: Flying Chaos)
• Awesome Plotters
• DrawingBotV3
• DrawingBotV3
• HalftonePAL
• HalftonePAL
• Sekonic plotter manual
• DrawingBots.net
• Plotterfun
• Plotter-Vision
• city roads
• Home of FREE SVG files for plotters and drawing robots

HTML and web tools

• Tables generator