Bob Pease's Analog Computer
Analog simulation of a car February 14th, 2021
Discussion of an analog simulation from one of Bob Peases's columns.
Reed-Frost-Model of infectuous deseases
Simulating an epidemic December 30th, 2020
A very simple model of infectuous deseases. With maths and simulations.
Fetching weather Data online pt. 3
Setting everything up Octobre 12th, 2020
How to use an ESP32 to fetch the weather data.
Fetching weather Data online pt. 2
Using Arduino IDE Octobre 3rd, 2020
How to use an ESP32 to fetch the weather data.
Fetching weather Data online pt. 1
Using C++ Septembre 14th, 2020
How to use libcurl and nlohmann/json to fetch weather and time data.
Drawing a Smartphone Case
I did not find a good one for my phone. July 26th, 2020
I use a honor 8 lite smartphone. I ordered several cases from the internet and they did not fit, so I had to print one.
Choosing a CAD System
On software for technical 3D modeling. July 6th, 2020
It is never easy to choose a CAD system. Especially as a hobbyist the affordable options are limited.
Ender 3 Pro
I bought a 3D printer. June 15th, 2020
My first impression of the Ender 3 Pro and a few remarks on the assembly.
Fuzz face - some measurements
As promised before February 22nd, 2020
A few measurements on the Fuzz face.
Build a boombox
with Bluetooth February 22nd, 2020
How to build a simple boombox with 30W and Bluetooth.
Repair of a Loudness Volume potentiometer
Can the volume potentiometer of my amp be saved? June 17th, 2019
HiFi amplifiers used to have a Loudness circuit. Because of motorised potentiometers for remote control and digital signal processing the special parts are not needed anymore and if your volume pot crackles you might not find replacement easily.
Fuzz effect explored
A simple effect - description and simulation June 6th, 2019
There are so many audio effects today, but every pedal board should have a fuzz effect. So how does it work?
Repair of a Sofa
The touch button of my motorised Sofa went dead April 26th, 2019
Modern furniture comes often with an electric plug and motors to increase your comfort. My - not so old - sofa decided to not react to the touch buttons anymore, so I had a look.
Know your Probes
About an inductor and an oscilloscope November 21st, 2018
If you hook up your scope, you should think about what you are doing. Although this is clear to most people who use a scope, I want to show some interesting effects you can get if you do not.
Repairing a Laney VH 100 R
Some strange error blew the fuse repeatedly May 15th, 2018
My brothers amp blew the fuse irregularly but repeatedly. What might have been the problem?
Repairing a Dual record player
My freshly bought, used Dual 510 stopped playing July 22nd, 2017
After I bought a Dual 510 in good shape, it stopped playing records. The table just stopped turning. What can be done to fix this?
