Talpadk’s Blog

March 10, 2012

HP Proliant N40L Filter

Filed under: Uncategorized — talpadk @ 1:32 pm

I recently bought a HP Proliant N40L “server” as an upgrade to my QNAP 409.

And as with my QNAP I would like a filter that prevents most of the dust in my living room from entering the Proliant.
Before I build a filter out of a piece of cardboard and some paper towel for the QNAP I have once had to vacuum it due to a slight build-up of dust.
After the filter the inside remained a lot cleaner and I only had to clean/replace the filter, a lot safer and easier than cleaning the whole thing.

If some paper towel works for a QNAP then why not a Proliant?
Anyway here is a tiny How to “build” a simple and cheap filter for a Proliant N40L

First you need to remove the plastic that covers the door.

In order to do that you need to remove the lock this involves: Removing the screw holding the metal “bar”, then removing the nut that holds the locking mechanism in place.

You can now remove the plastic covering the metal door by carefully releasing the thee plastic hooks at the top of the door.

Next you need to cut a 19×14.5 cm piece of paper towel.

I removed half the layers of paper to keep the pressure drop across the filter low.
Last time around I used paper towel with only two layers which was much easier to separate than the 4 layer stuff I used this time…

Now you need to tape the paper towel onto the outside of the metal door.
If the Proliant is running and the door is closed the paper will be held in place by suction, making it a very easy job indeed.

Cut a hole in the paper towel for the locking mechanism.

Put the plastic covering back on, hiding the filter.

Reinstall the locking mechanism.

Close the door and admire your handy work while drinking your favourite beverage.
(Beer can be used during this step)

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June 21, 2009

Debian and the Freerunner

Filed under: Uncategorized — talpadk @ 11:04 am
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Some time ago I bought a Freerunner as an upgrade for my Neo 1973, I was going to wait for the GTA03 but as you all know it got delayed indefinitely.

Why Debian.
Q) Why Debian?
A) Well I like the fact that it comes with a ton of pre compiled software. Also it behaves just like my regular desktop computer: Development environment, just apt-get install a gcc compiler on the phone and you are set.

Q) Why not a Debian base distro like Neovento?
A) Yet another Debian distro, not again… Also it seems to be geared towards installation onto the internal flash, and I like to install large silly things like emacs, compilers, pcb, gschem, kicad. Also it uses LXDE and I just happen to like Matchbox for embedded devices.

Some historic events
Of course I had bought two Kingston SD-C02G 2GB microSD cards for the Neo 1973 which fails with I/O errors on the Freerunner typically me…
However there is a fix which works for me, well except that the Debian installer at that exact point in time was broken.
Quick fix: Just copy my Neo 1973 install using dd. Install the config for gta02. Works like a charm.

The actual “review”
I bought a Kingston SDC4/8GB as I would like to run the SD controller at full speed, I have not tested this yet but:
The Debian install went smoothly…

The Good

  • Comes pre installed with matchbox, my favorite¬† window manager
  • Trayer is installed and works just fine
  • openmoko-panel-plugin is installed as default

The not quite so good

  • No way of launching additional applications (no panel app with a start menu installed)
  • I just can not seem to get the WLAN GUIs to work (they anr not installed by default either), command line WLAN works just fine.
  • The default is still running the phone as root. Can not blame Debian as this is still the up stream/FSO way,¬† I just do not like it that is all.

Conclusion:
The Debian install had included some extra features as default since my last install.
How ever I would like some way of launching additional programs as default, if I just wanted to use zhone I could have installed a number of other distributions.
This can easily be fixed by installing additional software, I guess it is a matter of minimalism to allow the freedom of choice.
Debian still provides a good minimal install for customising your phone, also I like the apt-get upgrade option instead of the eternal complete  re-flash cycle I know from my Nokia N770

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