Just a small note to myself, because I have forgotten it again.

Connect the RS board to your PC trough it's WAN port.
Give static IP to your PC in the 192.168.1.255 subnet.
(IP 192.168.1.1 mask: 255.0.0.0 gw: 192.168.1.20)

cd to your Openwrt's bin directory. (bin/ar71xx)
Power up your RS (trough POE) while holding down it's reset button.
You can release it when the RF led starts light.
Run tftp in the bin/ar71xx directory:

$tftp
binary
trace
put openwrt-ar71xx-ubnt-rs-squashfs-factory.bin


If the process is successful then wait 5-6 minutes. Once the upgrade is finished you the RS will reboot itself.
You will notice it because the wired connection is downed during the reset.

After the reboot it will wait a few minutes, because it erases jffs2 filesystem, and it is takes a long time.
Don't panic, it will finish it.

Today I wanted to print some documents. Click print, wait nothing happends. I have checked the CUPS command panel, and it said, that the
/usr/lib/cups/filter/pdftopdf failed. Happiness. I have tried to run it, and

mm@lapos:~$ /usr/lib/cups/filter/pdftopdf
/usr/lib/cups/filter/pdftopdf: symbol lookup error: /usr/lib/cups/filter/pdftopdf: undefined symbol: _ZN13GfxColorSpace5parseEP6Object


This happends on my notebook running Ubuntu 9.10 Karmic Koala x86_64.

I remember that there were a CUPS update few days ago. I have forced back the old version of cups, but it did not helped. So I have made a bit workaround with

mm@lapos:~$ sudo mv /usr/lib/cups/filter/pdftopdf /usr/lib/cups/filter/pdftopdf2
mm@lapos:~$ sudo /etc/init.d/cups restart

AAnd happiness.
Now I feel that once I will be angry to myself about this action, but currently I can print, and this is what is matter.

Today I have tried to build my updated repo for my Netgear DG834GT, but it failed with:

cp: cannot stat `/home/mm/Projektek/netgear/openwrt/build_dir/linux-brcm63xx/compat-wireless-2010-03-03/drivers/net/wireless/ath/ath5k/ath5k.ko': No such file or directory
make[3]: *** [/home/mm/Projektek/netgear/openwrt/bin/brcm63xx/packages/kmod-ath5k_2.6.32.9+2010-03-03-3_brcm63xx.ipk] Error 1
make[3]: Leaving directory `/home/mm/Projektek/netgear/openwrt/package/mac80211'
make[2]: *** [package/mac80211/compile] Error 2
make[2]: Leaving directory `/home/mm/Projektek/netgear/openwrt'
make[1]: *** [/home/mm/Projektek/netgear/openwrt/staging_dir/target-mips_uClibc-0.9.30.1/stamp/.package_compile] Error 2
make[1]: Leaving directory `/home/mm/Projektek/netgear/openwrt'
make: *** [world] Error 2


Mostly if the daily openwrt snapshot building fails, the easiest thing to do, is rm -rf everything, and checkout a clean snapshot.
Of course this means, you have to recompile everything which wastes a lot of time.

I did not have so much humour to do it, so I have decided to do something else. I have updated my Routerstation repo, but it failed with the similar issue. As I the ath5k.ko is missing, because the compat-wireless-2010-03-03 package had not been compiled, but it had the hidden .configured and .built files.

I have removed all of these files with this command:

rm -rf /home/mm/Projektek/netgear/openwrt/build_dir/linux-brcm63xx/compat-wireless-2010-03-03/.built
rm -rf /home/mm/Projektek/netgear/openwrt/build_dir/linux-brcm63xx/compat-wireless-2010-03-03/.configured*
rm -rf /home/mm/Projektek/netgear/openwrt/build_dir/linux-brcm63xx/compat-wireless-2010-03-03/.prepare*


And now the build is done.

Conclusion
If your openwrt build fails with a missing file, or a directory you should find out in what package is in, and remove the hidden markup files (.build, .configured*)

Currently I have a project which is based on the Atmel's NGW100 board.
It contains an 7' LCD display with touchscreen, an AC97 soundcard, a GPRS modem, and a PIC based board for controlling relay's, and so on.
The development time to make it working should be as sort as is possible. Read more...

A few months ago I have serviced with my colleague an universal charger like this:
Read more...