Am Freitag den 27.7.2012 ist Sysadmin Day.

Grund genug für eine Veranstaltung: shackspace und GUUG-Stuttgart laden zum Sysadmin Day Grillabend ein.

Wer dabei sein möchte, bringe Fleisch/Wurst/Tofu … seiner Wahl.  Mitgebrachte Salate sind ebenfalls gern gesehen.  Brutzeln tut es ab 19:00 im/vorm shackspace.

Anmeldung zum Nachtisch und Salatkoordination unter http://www.doodle.com/um8ffnfmbgiz3yuh

Zum Event:
Eintritt frei! (Spenden an shack e.V. sind gerne gesehen) Jeder ist willkommen!
Datum: Freitag, 27. Juli 2012, ab 19:00 Uhr
Anfahrt: U4/U9 Haltestelle “Im Degen”, Ulmer Straße 255, Stuttgart Wangen (gegenüber Kulturhaus Arena)

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Dienstag den 17. Juli 2012 um 19:30 Uhr trifft sich die GUUG.
Diesmal lautet das Vortragsthema IPv6.  Referent Jens Link wird über die Hintergründe berichten:

IPv6 wird seit vielen Jahren von vielen Admins, Entwicklern und Entscheidungsträgern erfolgreich ignoriert. Es gibt viel Missverständnisse und Mythen rund um das Thema. Der Vortrag erläutert die Grundlagen von IPv6 und erklärt, warum man sich jetzt wirklich mit dem Thema beschäftigen soll.

Mehr zur GUUG Lokalgruppe Stuttgart unter http://www.guug.de/lokal/stuttgart

Zum Event:
Eintritt frei! (Spenden an shack e.V. sind gerne gesehen) Jeder ist willkommen!  Um formlose Anmeldung (Doodle) wird gebeten.
Datum: Dienstag, 17. Juli 2012, ab 19:30 Uhr
Anfahrt: U4/U9 Haltestelle “Im Degen”, Ulmer Straße 255, Stuttgart Wangen (gegenüber Kulturhaus Arena)

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Back in March this year layer1gfx did his second Urban Art Workshop which was totally fracking rad to say the least.   This time, over the the course of one weekend five folks, three synchronized cameras and hundreds of euros invested in a full rainbow spectrum of colors (including UV effect colors) resulted in major upgrades to the shackspace staircase.

We now have: A big “Weltraum” style, a Bender spraycan, a UFO, an Angry Bird, Tacgnol & Longcat, Krebs, Zoidberg, and Twilight Sparkle in space!

Here’s the making off:

Sprühling @shackspace from shack e.V. Hackerspace Stuttgart on Vimeo.

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Wir möchten an dieser Stelle kurz auf den monatlichen Vortrags-Event des Chaos Computer Club Stuttgart (CCCS) hinweisen, der wie immer in der Stadtbiliothek am Mailänder Platz stattfindet.

Diesmal, am morgigen Donnerstag den 12. Juli um 19:30 Uhr trägt Christian Lehmann anlässlich des Turing-Jahres 2012 über Turing, einen der Wegbereiter unseres Technologiezeitalters, vor:

Zum hundertsten Geburtstag Alan Turings ein Überblick über sein Leben als Mensch und sein Schaffen als Pionier in der Informations- und Computertechnologie bis seinem vorzeitigen Tod.  Heute wird Turing gerne als Prototyp des genialen Computernerds und als englisches Nationalheiligtum gesehen.  Begriffe wie “Turing-Test” und “turing-vollständig” sind vielen Menschen ein Begriff.  Ein Überblick über Meilensteine und ein wahrlich unwürdiges Ende.

Zum Event:
Eintritt frei!
Datum: Donnerstag, 12. Juli 2012, ab 19:30 Uhr
Anfahrt: Stadtbibliothek am Mailänder Platz, Mailänder Platz 1, 70173 Stuttgart, Max-Bense-Forum (UG), N 48° 47′ 25.249″ E9° 10′ 56.96″

 

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One of the first ideas even before shackspace was founded was getting a 3D printer.
However, it took two years until the idea got some real momentum when Robert was calling for a 3D-printer related workshop.   Christian took matters into his hand and actually started the project. An unsuspecting bystander chimes in with a small donation towards shackspace’s very own 3D printer.  It seems many find the prospect of having access to a 3D printer equally charming.  The lot steps up and the money for a 3D printer is raised in virtually no-time.
A few days pass and Christian clandestinely spends a week finding suppliers and ordering parts from lots of different sources.  A month passes – during which parcel after parcel mysteriously finds its way into the hackerspace.  Status reports are being made, open tasks for participation proclaimed.  Multiple people show interest in soldering electronic boards – thus further reducing the monetary costs to the printer parts.

The brain (RAMPS 1.4 parts) arrive and thanks to Stephan, only hours later, the board is fully assembled.
The opto kits arrive and Andy, who wasn’t fast enough to get his hands on the RAMPS, plays his part in soldering the 6 kits.
Phil is even faster with the next items thus securing his place soldering the (still to be put to the test) hall-o endstops.  Meanwhile Robert’s Prusa Mendel 3D printer spits out parts which are essential for assembly while in another room the Misumi extrusions are being tapped.

Shortly thereafter the construction of the frame begins; parts are being aligned, screws are being turned.  With each part and every screw the task gets a little harder because of the scaled up build (330x330mm) area.  First ideas for design improvements are being discussed while the printer frame already looks like one.  Stephan once again gets his hands on the RAMPS, installs the firmware and conducts first tests by getting the motors to move.
Finally, the frame is completed and work continues on the installation of the rods, belts, motors and carriages for the different axes.

The plastic parts for the extruder are already printed and their assembly begins.  The perceived worst part is the filament conveyor screw which essentially is a regular screw with an unthreaded part where one has to cut in grooves so the screw can get a grip onto the material and push it down the hot-end.

While the printer is moving closer to completion, Phil designs the layout for the heating wire paths on the print-bed, which needs to be heated to prevent the printed layers from warping.

The print-bed and the optical endstops are installed; first testing begins and some problems are encountered.  First, the printer-bed heating draws a lot of current while heating. The current is high enough to make the el-cheapo 400W ATX-PSU drop the voltage on the 12V-rail down to 9,2V – not even reaching 50° C.  Installing Armin and hadez’ 700W 98% efficiency Corsair ATX-PSU deals with that problem just fine.  With this PSU the printer-bed now heats properly up to 77°C which is enough for printing with PLA.

We still have to find a solution to get higher print-bed temperatures for printing ABS because that will require around 120C to prevent warping of the extruded material.
Another problem was the stepper for the Y-axis losing steps.  The problem was solved by using slower acceleration ramps.
There is also some software reconfiguration and a git repository for the settings and 3D Models.
Momo installed some led-strips on the frame which now illuminate the printer and also sacrificed one of his netbooks which is now used as the printerstation.

Next up:

  • Full parts list with links to suppliers and costs
  • Full print-parts list
  • Illustrated build instructions
  • Fablab @shackspace

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