Kategori HAL9k

21 maj

1 Comment

Kom til åbent hus – lørdag d. 1. juni – kl. 12.00

Af

Hvornår: 1. juni 2013, kl. 12-19
Hvor: Sofiendalsvej 80, 9200 Aalborg SV ( http://hal9k.dk/find-os/ )

Hackerspacet hal9k holder åbent hus, hvor der er mulighed for at fejre
at vi har fået nye permanente lokaler på Sofiendalsvej 80, 9200 Aalborg
SV. Et hackerspace er et sted hvor der findes rigeligt med værktøj og
folk med stor interesse for teknik, elektronik, software og håndværk.
hal9k er åbent for alle.

Der vil i løbet af dagen være en række foredrag som man kan komme og gå
til, servering af ekstremt lange hotdogs, mulighed for at se en
3D-printer, og mulighed for at få fræset et visitkort eller øl-briket af
eget design i træ.

Sidst på dagen vil Prosa være vært ved lidt sommermad, og øl/vand.
Tilmelding til aftensmad sker på Doodle:
http://doodle.com/wtzstrrq9it4r3bp

Program:

12:00 Velkomst ved formanden
12:10 “Lyndetektering” ved Christian Rostgaard Andersen
13:00 “Diverse finurligheder” ved Ole H. Møller (Kendt fra TV)
14:00 “XBMC Add-ons” ved Tommy Winther
15:00 “Partikelfysik” ved Mads Horn
16:00 “Hardwaredrivere” ved Mikael Knudsen “Arduino Hacks” ved Hans-Erik Tjellum, Let-Elektronik.dk
17:00 “AAUsat” ved Troels Jessen
18:00 Sommerhygge med mad og øl/vand, ved Prosa

Kig forbi til en hyggelig dag!

 

Gemt under: HAL9k, Udvalgte posts

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17 maj

0 Comments

Fra 0 – 1000Ω på 2-3 timer (ca.)!

Af

Vores værksteder er ved at være klar til at tage i brug. Det betyder også at det er blevet tid til at få et overblik over alle de komponenter vi har.

Igår forsøgte Alex at sætte alle vores modstande i system, for at få et overblik over beholdningen. Vi har fået doneret 2-3 flyttekasser med modstande, så det er på ingen måde det vi kommer til at mangle.

2013-05-16 23.11.49

Alle vores modstande og andre basis komponenter bliver lettilgængelige i vores fine nye rack-system. Det har jeg desværre ikke billeder af, så dem får I senere…

 

Gemt under: Hackerspace forbedringer, HAL9k

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24 mar

0 Comments

HAL9k; now with awesome electrical and network installation

Af

The local hacker space here in Aalborg (HAL9k) has moved from Rapsgade 1 to a permanent location at Sofiendalsvej 80. For a number of weeks we he been moving boxes of all our stuff, painting walls and other tasks related to the move. One of the things that I was involved in was the electricity installation and the computer network.

We have been so lucky to inherit a large number of metal and plastic cable trays including a number of Ethernet jacks and power outlets reducing the budget for establishing a new infrastructure at the new place.

After a lot of work, 50 m metal, 20 m plastic cable tray and 1,2 km Ethernet cable later we now have 74 ethernet jacks connected to our distribution frame with our two 48 port gigabit Dell switches connected to an OpenBSD firewall in VMware on our Dell R710 server, routing IPv4 and IPv6 (through a SIXXS tunnel). Thank you to Xena for the switches and the server.

The wireless network is handled by a 802.11a/b/g access point. The access point and the directional antennas are actually meant for outdoor usage, so we mounted it on an IKEA table leg to give it a touch of the rustic outdoor life on a large pole…
If you are curious about the details of the network setup check out the hal9k wiki here.

Besides the network installation we have also installed a new distribution board and a lot of power outlets. We have a dedicated power meter for the server room besides the three other power meters (which according to our plan will be monitored by our LIAB) and relays for the groups used in the workshops making integration with the physical access control system and emergency buttons easily done.

 

IMG_3762 IMG_4140 IMG_4145 IMG_4155 IMG_4156 IMG_4159 IMG_4171 IMG_4174 IMG_4180

 

 

 

 

 

 

Gemt under: Extern, HAL9k

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30 okt

0 Comments

POS printers and Python

Af

I had this old POS (Point Of Sale) receipt printer laying around for some time and thought it could be fun to play a bit with it. Printing plain text is simply done by sending it as characters via a serial connection. Cutting the paper is some ESC code which i found in a manual online. Printing images was a bit more tricky, since it is requires some specific codes, depending on how the dots in a vertical bar, equal to the height of a character, must be composed. I wrote a small Python module integrating the ability to print images, text etc.  since I could not find anything online simliar to what i wanted.

At the local hacker space (HAL9k) we have now received a large box full of used receipt printers, VFDs etc. and some of the members have asked for the module for printing images so I have uploaded pyPOSprinter to GitHub. It makes use of pySerial for communicating with the printer and Python Image Library for reading image files. The included example also shows how to use pyQRNative to print QR-codes (bar codes are soo last centory :-)  ).

from pyqrnative import PyQRNative
qr = PyQRNative.QRCode(5, PyQRNative.QRErrorCorrectLevel.Q)
qr.addData(“http://www.sman.dk”)
qr.make()
im = qr.makeImage()
ims = im.resize((525,525))
from POSprinter import POSprinter
printer = POSprinter.POSprinter()
printer.write(“Hello Puffy\n”, align=”center”)
printer.lineFeed(2)
printer.printImgFromFile(“puffy.gif”, resolution=”low”, scale=1.0)
printer.write(“Friske agurker paa glas”, rcolStr=”200 DKK”)
printer.lineFeed(2)
printer.printImgFromPILObject(ims, scale=0.5)
printer.lineFeedCut()

Gemt under: Extern, HAL9k, open source, QR code

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