Raspberry Pi 3 #computers #hardware #jukebox

I upgraded my jukebox to a Raspberry Pi 3 yesterday, after becoming exceedingly annoyed by my Raspberry Pi B+ only managing to boot about half the time.

So far: the built in wifi works great, I can run the attached 2,5" harddisk from two of the usb ports, and it boots as it should.

So with the new Pi I have saved using an external USB-hub and an external USB wifi dongle.

Only downside is that I could not make the external usb sound dongle work - it appears in alsamixer, but whatever I do, no sound comes out. The built in sound works, and seems to work better than on the original Pi, where the sound level was unusably low.

All in all, Raspberry Pi 3, thumbs up!


Open positions in the Copenhagen area #biotech

If you would like to juggle a lot of data using Python, GNU/Linux (Ubuntu), and Hadoop in a biotech research and development environment in greater Copenhagen, take a look at these job postings from the department I work in:

Our new neighbour department has two job postings up as well:

Check them out if they sound interesting to you.


Soehnle scale usb connection #hardware #programming

Soehnle makes a scale with a wireless display that collects measurements, and can be attached to a computer using usb, called "Body Balance Comfort Select".

Unfortunately the ComfortSelect software is only available for Windows, and when I asked the manufacturer (in 2012) for information so I could write my own software for Linux, they declined.

So, I installed Virtualbox, got a test image from Microsoft, and used usbmon to capture the communication between the Windows software and the scale.

I'm no expert in this (having only connected to a simple eBuddy before), but so far it looks like the communication is done via bulk transfers.

Update: I have now written a small program that can list the users registered on the scale, and dump the measurements for a user.

It only dumps date + weight, because I don't know what the two remaining 16-bit values are (probably some conductance measurement or similar).

Finally I can get a graph without having to type in the weight every day!

Incidently, it has memory for more than 6 years of measurements (and it keeps them when batteries are removed), which isn't surprising (each measurement takes up 10 bytes) but stupider things have been seen...


pinentry-emacs #emacs #gnupg

This little solution is absolutely great: pinentry-emacs.

The default GUI pinentry thing pops up a window on the wrong screen, when using emacs/emacsclient via ssh, which makes it unusable (*sigh*).


I ♥ Free Software #free software #ilovefs

#ilovefs GNU Emacs, Debian GNU/Linux, Linux, X.Org, Postfix, Perl, PostgreSQL, OpenSSH, Firefox, Apache, ejabberd, Dovecot, git, GnuPG, XMonad, GHC, Gnus, jabber.el, Catalyst, DBIx::Class, rdiff-backup, GNU, the list goes on an on - couldn't live without you; thanks!


shr-max-image-proportion - yes! #emacs

I am working on a system that allows me to read Atom/RSS-feeds using nntp - in Gnus, Thunderbird, slrn, or whatever newsclient you prefer.

Reading the newsfeed of the Danish Broadcasting Corporation was annoying me a bit, because the pictures they include are huuuge.

It would be nice if they were scaled down a bit - but I don't want tiny images scaled down as well...

Lo and behold, Lars has already solved this problem in shr.el, the HTML-renderer used in Gnus (and eww): setting shr-max-image-proportion to 0.5 on the topic of all my Atom/RSS-based groups → hey presto, problem solved.


There, I fixed it #cars #hardware

Keyfob with gaffa tape


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