Using piezo disks for automatic bed leveling on 3D printers
12 mins
Description of an easy way of using piezo disks as touch sensors to perform bed leveling with 3D printers or other CNC machines. This blog entry describes the most basic possible way without much external circuits (only an ATtiny13A and two resistors are used)
GIT and SVN interoperability or moving from SVN to GIT without loosing history
9 mins
How to use the GIT client to interoperate with a remote SVN server or how to migrate an SVN repository to GIT including it's full history.
What is Multifactor authentication (MFA) and how to use a Yubikey on FreeBSD for Web and PAM (Local, SSH, etc.) authentication
13 mins
This article contains a short tutorial about multifactor authentication, various factors that may be used and a tutorial on how to use the Yubikey hardware token for web- and local as well as SSH (pam) authentication on FreeBSD.
How to use TOR as normal user
11 mins
A short description how to use TOR as a normal user and what to be aware of when using TOR
How to use Frama-C to proof C code (short primer)
19 mins
A short primer on how to use Frama-C to proof properties about C-code.
What are JSON web tokens any why would one want to use them?
5 mins
Just a short description of what a JWT is, what it can do for one and how they are realized - and why one would want to use them to identify users in one's web application by using JWTs instead of session IDs.
Authenticating and signing using Austrias citizen card
13 mins
A short summary on how to embed authentication and generally signing with the Austrian citizien card
Building an I2C controllable stepper driver board with DRV8825 breakout boards and ATMega328p
8 mins
This is the description of a small carrier board for two DRV8825 breakout boards (or compatible) that are controlled by an AVR (ATMega328p) which runs a small (linear) motion processor that gets it's commands via I2C.
Using Git / Git Cheatsheet
22 mins
A short cheat sheet on how to use the git version control system (most basic operations)
