a c i d b o u r b o n

a digital & analog audio electronics blog by Michael Wiebusch

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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

a simple ringmodulator-ish FX pedal

December 21, 2021by acidbourbon 6 Comments

Demo Video Introduction Earlier this year I wrote a post about how to build a simple shortwave receiver with nothing but widely available hobbyist electronics parts, i.e. 74HCxx ICs, standard […]

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analog projects, music related tech

Using CD4000_v.lib and 74hc.lib in LTSpice

June 30, 2021by acidbourbon 3 Comments

So, I was simulating a circuit in LTSpice and I wanted to use an 4000-series IC. Someone probably did that before, right? So I googled and found quite some posts […]

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software hacks and fixes

yet another perpetual pendulum

April 17, 2021by acidbourbon 1 Comment

Introduction Heya. So I found people building perpetual self-exciting pendulums (pendula? pendulae?) and showing them off on youtube. Nice 🙂 So far the most elegant that I know of seems […]

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misc

a 74xx-defined radio

April 11, 2021by acidbourbon 79 Comments

Video Appetizer TLDR I built a shortwave radio receiver from scratch using only cheap and easily available components, i.e. standard transistors, op-amps and 74xx logic chips. No typical radio parts […]

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analog projects

Fix for XSane making big pdfs

August 16, 2020by acidbourbon Leave a comment

Are you using Linux as your primary desktop/office system? Yes. Do you use a scanner? Yes. Are you using XSane to scan documents and save them as .pdf files? Yes. […]

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software hacks and fixes

AltGr Trouble with Synergy – a workaround

August 10, 2020by acidbourbon 2 Comments

Hi. I am a German using a German keyboard, so I have to use the AltGr key a lot to type an @ (AltGr+Q) for example. I also like to […]

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software hacks and fixes

LTspice & NumPy – Part 2: Fast Convolution Filter

December 4, 2019by acidbourbon 2 Comments

Motivation In the previous post we discussed the possibility to use LTspice as a “plug in” into a Python/Numpy signal processing project. It works quite well: you send a numpy […]

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software hacks and fixes

LTspice & NumPy – Part 1: seamless integration of LTspice in python signal processing

November 26, 2019by acidbourbon 14 Comments

Motivation Might this article be interesting for you? Answer the following questions: Do you like signal processing with python and numpy? – Correct answer: Yes! Do you like simulating analog […]

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software hacks and fixes

send numpy/csv data to RIGOL DG4202 arbitrary waveform generator via LAN

September 12, 2019by acidbourbon Leave a comment

Another very short one. At work we have acquired a mid priced arbitrary function/waveform generator, the DG4202 by RIGOL (DG4000 series).It has a USB and a network interface. Since I […]

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misc

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