October 21, 2020
After finishing my own VFD clock project a while ago, I now bought a ready-made module from Noritake Itron because I wanted to take a look how they do it – especially the filament supply.
These modules usually sell for somewhere above 50€. But here I found one on eBay for just over 20€. The description had no model number or dimensions but I didn’t care much .. I bought it.
March 27, 2020
Aktuell verbreitet sich das neuartige Coronavirus (SARS-CoV-2) rasant auf der gesamten Welt mit teils verheerenden Folgen. Dies soll aber kein Beitrag über das Virus an sich sein, sondern eine Anleitung wie ihr euch auch in Zeiten, in denen Mundschutz Mangelware ist und besser dem medizinischen Personal vorbehalten werden sollte, ganz einfach selber eine Behelfslösung nähen könnt.
February 10, 2020
Vacuum flourescent displays are a beautiful piece of retro technology. Noritake Itron
and a few others still build them as dot-matrix or full graphic displays. But the
technology dates back to the 70’s and you can find some surplus units available on eBay.
November 6, 2019
To keep things short: I’ve had an Anet A8
3D printer for a while now and wanted to flash an updated version of its
For some reason however, the bootloader was broken. So I couldn’t flash it with
avrdude by simply using a USB cable. For this case you can find lots of
tutorials on how to flash Arduino boards with a second Arduino. I didn’t have a
second Arduino at the time though … so why not just bit-bang it from a Raspberry
November 6, 2018
A while ago I stumbled upon podman, which touts itself as an alternative to
Docker. Not only does
podman not use any big fat daemons™ but it makes it rather easy to run
containers in a user-namespace, i.e. with greatly restricted privileges on your system. The fun
thing is: you are still
root within the container!
October 5, 2018
Trying to implement some sort of automatic versioning based on your git commits or tags is not as
easy as it should seem. The idea is to use a feature built into the revision control system to
modify your project files and increment version counters automatically or embed commit information
into software builds - in my case: the
--version output of Go applications built with
September 19, 2018
I am supposed to have a 500 Mbps internet line at home. Last week it really didn’t feel like that
(again). Pages would take ages to load, streams would stutter miserably or simply abort and
downloading OS updates simply timed out. So I set out to measure my actual bandwidth over a longer
period of time.
March 3, 2018
It is becoming common knowledge that you should use two-factor authentication
whenever possible. Some services allow the use of TOTP apps on your smartphone,
some only want so send you SMS codes .. and others use proprietary tokens.