Sun 28 April 2024

Easterhegg 2024 Regensburg

Had a lot of fun with the RabbitChaosAdventure at this years Easterhegg.

A part of the challenges had to besolved with the beautiful badge by x70b1:

EH21 swag

For each completed chapter of the RCA contestants would receive one of four additional PCBs

After full assembly the harmless bunny was transformed into a awesome cyber bunny:


After the Eastehegg I spend some time in FreeCAD to design a back cover for the badge that adds an extra layer of illumination with a couple of LEDs.

EH21 swag

Design files, STLs, and assembly instructions can be found in the RCA badge repo on github.

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Mon 25 February 2013

Desperate times

Desperate times1 call for desperate measures2:

top

bottom

side

"insulated"


  1. late sunday afternoon, nearly dead battery and a charger cable broken in the worst possible spot: 2mm from the connector 

  2. perfboard, solder, ziptie, electrical tape and bit of wire 

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Wed 04 July 2012

r0ket as Universal Charger

Here's another nice use case for the µc³ r0ket:

Since it features a build in 3.7V LiPo cell and a fitting charging controller the r0ket basically can be used to charge LiPo or LiIon single cell batteries found in phones, media players, cameras or even toy helicopters.

After I realized that I had forgot to charge my camera and didn't bring a charger to the easterhegg either I was happy that I already had set up one of my r0kets for charging external batteries.

First you have to unplug the build in LiPo battery and attach the VCC (right) and Ground (middle) pins to the appropriate pins of the cell you want to charge. If the battery you are about to charge has a temperature sensor connect it to the leftmost pin on your r0ket. Otherwise connect the left and middle pins with a 10k resistor.

With the voltage l0dable you will even be able to monitor the charging progress.

WARNING: This setup is only meant for single cell LiIon or LiPo batteries. Bad things will start to happen, if you try to charge multiple cells in series. Also keep in mind that lithium cells can burn or even explode if not handled properly, so always be careful and don't blame me if you fuck up your carpet.

charging a camera battery

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Mon 04 June 2012

Easterhegg 2012 - Basel

Das Easterhegg Easterhegg im Congress Zentrum Basel ist gerade gestartet. Wir wohnen atomschlagsicher(?) drei Geschosse Tiefe in der Zivilschutzanlage neben. im Congress Zentrum Basel ist gerade gestartet. Wir wohnen atomschlagsicher(?) drei Geschosse Tiefe in der Zivilschutzanlage neben.

Bunkertür

Aufenthaltsraum

Um den Nichtschweizern das Umtauschen von Euros in Franken zu ersparen gibt's die schicken Matetaler für alle hegginternen Ausgaben:

Bunkertür

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Mon 13 February 2012

Copyright vs. Nachrichten 1:0

tagesthemen_screenshot

Versteh' ich das jetzt richtig? Wenn man ein wenig unfreie Musik z.B. bei der nächsten Pressekonferenz mit unangenehmen Inhalt im Hintergrund laufen lässt, dann blenden die Tagesthemen den kompletten Beitrag in der Onlineausgabe einfach aus? Diesmal hat es wohl "nur" den Beitrag zu Whitney Houstons Tod getroffen, nichtsdestotrotz: Geht's eigentlich noch?!?

Wieder mal ein Fall der zeigt, dass das Urheberrecht in seiner jetzigen Form völlig unausgewogen ist und dringend an die Realität angepasst gehört.

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Sat 08 October 2011

r0ket flashlight m0dule

Per request, here are some pictures of my micro-m0dule for the Chaos Communication Camp r0ket-badge:

micro_module

torch is on


This is probably the simplest possible m0dule one can build. I only used left overs: A white smd-led, a smd-resistor, a little bit of perfboard and a few wires.

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