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a digital & analog audio electronics blog by Michael Wiebusch

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Category Archives: hacks

four buttons on one ADC pin

July 5, 2022by acidbourbon Leave a comment

Motivation Sometimes you just barely get away with the number of available microcontroller GPIO pins to implement the desired functionality — And then you discover that you have no more […]

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digital projects, hacks, misc

Wheelchair Accessible FX Stompbox – A Remote Control

March 9, 2017by acidbourbon Leave a comment

Motivation A friend of mine is a talented bass guitarist who happened to play in my band. He came across the TECH21 Sansamp, which is a nice and compact bass […]

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digital projects, hacks, music related tech

Brute Force Computation for Cheap Log Digital Potentiometers

October 1, 2016by acidbourbon Leave a comment

Abstract This article covers the attempt to build a digital logarithmic potentiometer out of two linear potentiometers. The benefits of this concept are: Linear digital potentiometers can be easily procured […]

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digital projects, hacks, music related tech

(semi) automated drill press table for PCB manufacture

February 1, 2015by acidbourbon 18 Comments

Motivation As you may have seen in earlier articles, I produce my own PCBs at home with the toner transfer method. After some experimentation the PCB quality is quite satisfactory, […]

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custom tools, hacks

MIDI OUT for vintage Korg CX-3

April 2, 2013by acidbourbon 13 Comments

Motivation The Korg CX-3 is one of the most popular and best sounding Hammond C3 clones. (I am talking about the vintage version from the 70s, not the digital reissue) […]

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digital projects, hacks, music related tech

Velocity Adjustment for MIDI Masterkeyboard

October 18, 2011by acidbourbon 2 Comments

A while ago (I think I was 16 or so) I bought a MIDI master keyboard, i.e. the FATAR Studiologic TMK-88 (or TMK 88?). The production quality of the keys […]

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digital projects, hacks, music related tech

12AT7 Overdrive INSIDE the Korg CX-3

September 20, 2011by acidbourbon Leave a comment

In the fall of good old 2011 I decided that it would be a nice thing to have a tube overdrive not on top of my organ but inside the […]

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analog projects, hacks, music related tech

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