yet another perpetual pendulum
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 […]
a 74xx-defined radio
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 […]
Fix for XSane making big pdfs
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. […]
AltGr Trouble with Synergy – a workaround
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 […]
LTspice & NumPy – Part 2: Fast Convolution Filter
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 […]
LTspice & NumPy – Part 1: seamless integration of LTspice in python signal processing
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 […]
send numpy/csv data to RIGOL DG4202 arbitrary waveform generator via LAN
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 […]
compiling ROOT (cernroot) with python3 bindings (pyroot)
I wanted to compile cernroot on ubuntu with python3 bindings for ROOT (pyROOT). This is what worked for me (i built it in a docker container): apt-get update && \ […]
CPAN problem with opensuse/leap:15.0 docker image
Just a quick shout to the internet about a problem that I have encountered (and solved): I set up a container based on opensuse leap 15.0 I wanted to […]
Wheelchair Accessible FX Stompbox – A Remote Control
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 […]
