Tag Archives: hardware

Thinkpad X220

I got myself a new (used) laptop the other day.
As there was some conflicting information regarding the compatibility with FreeBSD I just wanted to get this out there into the search engines.

I haven’t had time to play around with it too much but installing FreeBSD 10.2-RELEASE (actually PCBSD 10.2) most things seem to work out of the box. Wifi, graphics, sound, touchpad, webcam and sleep.

There are a still couple of things that I will have to look into, such as suspend to disk and two finger scroll.

Edit-20160229: Updated title to reflect the correct model (X220)

Dmesg below. Continue reading

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FreeNAS webGUI warning

Replacing a harddrive in a ZFS pool on FreeNAS

I recently bought a Western Digital RED drive to replace one of my old Western Digital Caviar Green drives in my FreeNAS storage. As previously mentioned I run a RAIDZ wich is comparable to a RAID-5 so I can do this without data loss.

The RED drives are supposed to be specifically designed for use in 1-5 drive NAS situations and have gotten pretty good reviews so even though it is a bit pricy I wanted to give it a go. In perspective the drive is only 100SEK cheaper then the Caviar Greens were two and a half years ago when I bought those.

Before replacing the drive it is recommended to scrub the pool to make sure everything is in order.

One thing to note is that in order for ZFS to accept a new drive as a replacement it has to have an LBA count that is equal or higher than the old drive. Look it up on the old drive:
[root@void] ~# camcontrol identify ada0 | grep LBA48
LBA48 supported 3907029168 sectors

Then verify with the datasheet for the new drive before purchase. In my case this.

This is a quick step by step of how I did it using the GUI. The next drive getting replaced will be so via cli only.

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Trying some Nexa switches with the Tellstick

Nexa wireless switches

Nexa wireless switches

A couple of days ago I happened by that Swedish chain with random things for around the house mentioned previously again and saw that they had Nexa wireless switches on sale (more..).

Naturally I had to try them!

They are pretty smart, and starts to auto learn the moment you plug them in. Setup with the Tellstick was a breeze, just add the switch as a protocol arctech self learning switch, give it a house number between 1 and 6710883 and a unit number. And off you go!

I have just added the first of the three so I can’t really comment on the reliability but expectations are high.

These have three memory locations, so perfect for tellstick plus remote and future fun.

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Upgrading to SSD in the Mac

MacBook Pro open

MacBook Pro open with new SSD installed

I finally took the step to ditch the old spinner in my MBP since the prices of SSDs have gotten very compelling. I got a 256GB Samsung 830-Series for just less than 1200 SEK and that let me avoid the hassle of moving to a smaller drive.

The switch itself was a series of simple steps as follows.
First I ran a manual time machine backup (I backup my entire system to ease a full restore in case of crash or theft). Then I rebooted and did another manual backup just to be sure.
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Raspberry Pi close

The Raspberry Pi is here!

Today it reached me at work thanks to a DHL delivery guy willing to make a couple of phone calls and an extra run.
I didn’t think it would arrive just yet so I had no prepared SD card, and due to my card reader in the mbp not working the process of flashing a card is a bit slower since I might have to use my GoPro camera as a reader..

Edit 20120620
I just wanted to note that my cheap Class 10 8GB Zap Glider card seems to work well.
End Edit

Edit 20120621
My A4 tech USB keyboard (KB-28GUSB) doesn’t work but a HP OEM (swedish) does.
End Edit

Here are a couple of unboxing pics to kill time with, taken with my new Galaxy S3 (so not cropped or altered just to test the camera).

Raspberry Pi box

Raspberry Pi box

Raspberry Pi ESD

Raspberry Pi ESD

Raspberry Pi top

Raspberry Pi top

Raspberry Pi bottom

Raspberry Pi bottom

Raspberry Pi close

Raspberry Pi close

Click to embiggen etc..
The pics are a bit noisy but I attribute that to being taken inside in pretty crappy lighting and having a monkey behing the steering wheel.

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A beginning foray into 3d printing

Prusa Mendel z-motor mountI have lately decided to build a 3d printer, and while I’m not the first it will still probably be extensively documented here.

The original idea was to put together a kit part by part as a long time side project but it is now leaning more towards the puchase of a complete kit at once. This to ensure that the end result actually works, and the way I’ve calculated it will also be substatially cheaper.

Assembled Prusa MendelSo the question now is what kit to get.

It currently stands mostly between a H1 kit from seemecnc.com or a Prusa Mendel kit.

I also have yet to decide if I will run it from my MacBook Pro or via an Arduiono. (I guess my old duemilanove clone isn’t going to cut it..)

Any input in the matter is greatly appreciated!

On a not so related note I’m buying a GoPro camera tomorrow so I will at least be practicing on making all kinds of bar mounts and the like once the printer is built.

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ELM327 OBD II bluetooth adapter

I recently bought an ELM327 v1.4 OBD II bluetooth adapter to monitor and in some cases modify the internal goings on of my car.

Just a quick note, the code to connect to the adapter is 6789 and not 0000 as suggested in some places.
Also the rumor about a virus on the software disc is true in my case. See screenshot from avg below.

avg scan of elm327 cd

avg scan of elm327 cd


I could not find any more info about it so it might just be a false positive, I have not verfied with any other scanner.

This will surely be interesting to play around with some more!

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