August 19th 2008
I found some facts how os x is handling the dns lookups. Because i was wondering why changing the resolv.conf doesnt seem to change Safari’s or Firefox’s lookups. The key to this is lookupd and DNS Service Discovery. Actually i came across this from an iphone related problem, which is quite well documented at saurik webpage.
August 7th 2008
Since my DSL provider’s DNS updates are really slow i wanted to switch to opendns, which is a good a idea anyways. But wtf i cant change the default dns in my fritzbox. No way to do it via the web admin. Ok why bother i said to my self and went for the shortcut. To find out that Leopard is buggy and u cant unassign the default dns on the Airport device, its simply greyed out. Bummer!
So do it the old school way and editet the resolv.conf. Where nslookup and dig seem to eat this but Firefox and Safari seem to give a flying fuck about this. Even Network pref.panes doesnt seem so sync againt resolv.conf. Seems to be a know problem to the people at the opendns forums. Ok went back to the fritzbox, and found a way to force the dns via the a config file. Just fillin this:
overwritedns1 = 208.67.222.222;
overwritedns2 = 208.67.220.220;
Used a java tool to pull and push the config directly from the box. Take a look here
Ja…funny. How easy u can spend an hour in front of a computer, just to take a shortcut for the slow dns cache update…
August 7th 2008
Moved my site to a new hoster geekisp.com. Got some nice webspace with all the stuff u need for painless hosting. So i got ssh access, svn and the all common web languages like php,python and ruby. I could even run a java webcontainer in my account, if really get into in grails. This package gives me the freedom i need without having to admin a whole domU with all the stress u get once in awhile if u have have to admin the whole bunch of applications u need to run a proper webservice. (mta, imap, fw, dns, webserver…). Quite fair prices and real good support. The people answer in like hours and u dont get an pre typed standard response. They actually know what they are talking about.
August 28th 2007
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April 4th 2007
Made my very own openwii version including debug routines. So i added a another status led to the chiip design and also added IO lines to the ATmega SIO pins. So now i have a drive chip which prints debug info via a serial line. So everybody who want to understand the dvd drive patching can watch this in serial console. The debug code retrieves the media status flag and prints some other status flags.
April 4th 2007
Since the 23c3 every interested researcher knew that is easy to compromise bluetooth sessions using the BTcrack tool.Thierry Zoller showed how it’s possible to retrieve link keys, The only problem was to get hands on a bluetooth sniffer device to get the raw bluetooth packets. Such devices are not available at consumer prices. But somehow Max Moser found a way to tranform a vanilla usb bt dongle into a bluetooth sniffer device. Don’t believe the hype…Now bluetooth security is dead.
Mini Howto:
#Backup old firmware dfutool -d hci0 archiv backup.dfu # Backup config bccmd -d hci0 pslist -s 0x000F >> backup_cfg # Check Vendor ID ( has to be 0x0a12) bccmd -d hci0 psget -s 0x000f 0x02be # Write new Product ID bccmd -d hci0 psset -s 0x0002 0x02bf 0x0002
April 4th 2007
Wow cool stuff, a podcast playing only real awesome SID stuff, including some newer SID stuff from the last few years. No lamers talking inbetween just chiptunes. Great ! Check it out 8bit Mayhem
BTW my favorite tunes:
Maybe i should code a PSP based SID compilation demo…
January 21st 2007
Got a new Toy. It’s a Juicebox from Mattel, a kids video and mp3 player. Actually it’s a linux based and has Samsung S3C44B0 ARM CPU, 8MB Flash and 2MB Ram. Since it has JTAG Pinouts you can use it as a really cheap ARM Dev Board. You can’t get one for around $10 at ebay. You find a lot of good info here.
Made some LCD test stuff, a 3d starfield and a simple fire demo. This code runs directly on the hardware not on top of the build-in linux. You need a JTAG cable to download the code directly into the RAM.
I’m using openocd for this:
halt wait_halt poll load_binary lcd_3.bin 0x0c001000 resume 0x0c001000
January 10th 2007
Ported the glcd lib to the Epson based Nokia LCDs. I tried to leave the code portable so that you can switch between the Epson and the Philips controller via a #define switch.
Actually i only changed the lowlevel hw access and init functions to deal with the Epson controller. Currently native screen rotation is implemented but i didn’t work on the hardware scrolling stuff. May i’ll do this later.
January 7th 2007
Got my Nokia 6100 LCD working. Long story of failures. First try was a LCD with a Epson controller from ebay for 10 Euros. But somehow someone failed to solder the smd socket proberly and it went a way 
( thx max ) .
Next try was a Epson based LCD including a header board from sparkfun . But this time i wasn’t able to run some demo code which was made for the LPC2138 on my LPC2148. I think the board was to fast to talk to the display. I wasn’t able set up SPI on the LPC2148 correct. Need more investigation on that topic.
So i gave up at this point and decided to go for a atmega16. I did a devel board for that which is losy based on this schematics. The boads uses simple parport icsp and has a serial line for debugging and sending data.
Finally i threw some code together using the init commands found in this project. Added support for receiving images via uart and wrote an little python client for sending images.
Future plans are to port the glcd lib to the epson based lcd.
