May 2024 / TypeScript

TypeScript: Use Satisfies for Exhaustive Type Checks

Compile-time safety for exhaustive type checks can be achieved with satisfies never. It's best practice to use it in every switch case statement.

May 2024 / Electronics

Docking Station Comparison: CalDigit TS3+ vs. Lenovo ThinkPad Dock vs. Dynabook Thunderbolt 4 Dock

This article compares three famous Thunderbolt and USB-C docking stations for Windows and macOS: the CalDigit TS3+, the Lenovo ThinkPad Dock, and the Dynabook Thunderbolt 4 Dock.

Feb 2024 / Raspberry Pi

Pi-hole "BOGUS (refused upstream)" Error

If the "BOGUS (refused upstream)" error occurs when using Pi-hole as a DNS server in the local network, these fixes solve the DNSSC problem.

Dec 2023 / Apple

Fix Spotify & Apple AirPods Pro Randomly Changing Volume Level

How to fix the problem or bug of randomly changing the volume level of Apple AirPods Pro 2 used with the Spotify app, tested on iOS 17.

Jul 2023 / Electronics

USB Overview: Differences between Ports, Colors, Standards, and Speed (USB-A, USB-C, USB 2.0/3.0/3.1/3.2, Thunderbolt 3/4/5, ...)

This guide overviews different USB ports and standards like USB-A, USB-B, USB-C, USB 1.0/2.0/3.0/3.1/3.2, Gen 1/2/3/4, and Thunderbolt 1/2/3/4/5.

Apr 2023 / Apple

Disable or Remove macOS Autostart Programs & Applications (e.g. Ivanti VPN Client)

Different ways to remove or disable different programs or applications from Apple macOS autostart after login (e.g. Ivanti Secure Access Client).

Jan 2023 / Raspberry Pi

Opel / Peugeot Electric Vehicle: Set Charging Threshold Limit (to 80%)

A Python script is presented on how to set the charging threshold or limit for PSA battery-powered EVs (e.g., to 80%) to stop at a desired level.

Nov 2022 / Raspberry Pi

Fix Bluetooth Problems on Raspberry Pi running Raspberry Pi OS (Raspbian)

Shows fixes for Raspberry Pi OS Bluetooth problems like device not found, no default controller available, or running Bluetooth in docker.

Sep 2022 / Coding

[How-to] Salesforce Pardot Dependent Field on Checkbox

In Salesforce Pardot Forms, fields can be made dependent on each other. This does not work for checkboxes. Our javascript code makes it possible.

Sep 2022 / DevOps

Transfer Files Between Two FTP Servers (Move Website)

This article describes how to transfer files and folders from one webhosting FTP server to another provider, e.g. for moving a website.

May 2022 / Smart Home

Device / Printer doesn't Connect to Best Repeater over Mesh

Workaround if a device (printer) doesn't connect to the best wireless repeater in a local AVM FRITZ! based WiFi network using Mesh technology.

Mar 2022 / Linux

Ubuntu Boot Loop Problem: Fix Full Disk with 0 Bytes Space Left

If the Linux system boots in an infinite loop, the root filesystem partition is maybe full with 0 bytes left. I will show tips to free up space.

Mar 2022 / Quick Tip

[Quick Tip] Easiest Way to get your SSH Keys onto a new Machine

GitHub offers an easy HTTP-API to download your public key without prior setup. You can use it to easily configure SSH logins on a new machine.

Mar 2022 / Tutorial

Mail Security: MTA-STS + Mailcow

MTA-STS is a security mechanism to prevent attackers from rerouting, reading and modifying your emails. Read how to use MTA-STS with mailcow.

Feb 2022 / Apple

Transfer Contacts from Google to Apple: Fix Import/Export Problems (Birthday, Address, Picture, etc. missing)

There are several problems when importing vCards from Google to Apple Contacts: Birthdays without years, addresses without labels, profile pictures etc.

Jan 2022 / Photography

Photography Problems: Pink / Purple Lines on Long Exposure Images with ND Filters

I noticed pink / purple lines on the resulting images of my long exposure shots with my DSLR camera on sunny days and ND filters applied.

Dec 2021 / Tools

[How-to] Microsoft Teams: Add Animated Video Background Image (GIF)

Microsoft Teams doesn't allow to add an animated video background. This tutorial shows a trick how to change the virtual background into a GIF image.

Aug 2021 / macOS

Fix: macOS Network drops with LAN over USB-C Docking Station in Zoom, Teams, ...

If your MacBook with a LAN docking station kicks you out of meetings over Zoom, Microsoft Teams, BigBlueButton,... after a short time, I show how to fix it.

 German Aug 2021 / Smartphone

SMS Spam Virus blockieren: "Neue Voicemail", "Verpasster Anruf" etc.

Unbekannte Rufnummern verschicken Spam SMS mit "Neue Voicemail" oder "Verpasster Anruf". Ein Link darin installiert Schadsoftware. So blockiert man die SMS.

Aug 2021 / Smart Home

[How-to] Connect IKEA TRÅDFRI Devices (Lights, Driver, I/O Dimmer, ...) to Philips Hue Bridge

Since IKEA TRÅDFRI and Philips Hue both use ZigBee, this article shows how to use the I/O Dimmer to control lights and drivers over a Hue Bridge / Gateway.

Jul 2021 / Apple

Canon Printer: Enable macOS Big Sur Scan Function in System Settings

The scan function of my Canon Pixma MX925 multifunction printer isn't available in the Apple macOS Big Sur system settings. I will show you how to enable it.

 German Apr 2021 / Review

Die beste Wetter-App für Deutschland (2021)

Drei Wetter-Apps liefern drei verschiedene Wettervorhersagen. Jetzt reicht es! Dies ist die beste Wetter-App 2021 für Deutschland. (iPhone und Apple Watch)

Apr 2021 / Off-Topic

Field Report: Testing the 28-Hour Day Sleep Schedule for One Week

A field report, experiences, tips and thoughts from living one week in the 28-hours per day sleep cycle. The initial idea is based on a xkcd comic.

Apr 2021 / DevOps

macOS Big Sur: Python 3.7 Installation with Homebrew

A step-by-step tutorial on how to install Python 3.7 on macOS Big Sur with Homebrew and fix all upcoming bugs, errors and problems with popular packages.

Feb 2021 / Review

[Quality Test] Spotify vs. TIDAL: Music Streaming Comparison

This article compares the best and highest sound qualities of the music streaming services Spotify and TIDAL in a personal field test over 3 month.