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JeeNode
posted 2009-12-25 00:12:43, link to this article
My JeeNode arrived today, just in time for Christmas!
The JeeNode is a small microcontroller board, with an RFM12 radio module, it is compatible with the Arduino IDE, which is a Good Thing.
For more information about this cool piece of kit, have a look at jeelabs.org.
Less than 30 minutes after arriving home, I started soldering the JeeNode kit together. I'm impressed with the quality of the PCB of these units.
Below are two pictures of my finished JeeNode.
Probing a SecurID Token
posted 2009-10-25 17:20:59,
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Today I peeked inside a RSA SecurID token and made a little test jig to probe some test pads that are inside.
Not much interesting found so far, but hit the read link to read about my journey to the SecurID's deepest secrets... ;)
Driving 7-segment displays with a MM5480 and Arduino
posted 2009-10-18 21:38:08,
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For the last year, up until a couple of months ago my heater was pretty unreliable, probably because of a flaky relay in its control unit, or maybe some bad capacitors, something that nowadays seems to kill almost all electronics prematurely.
Well getting bored of hitting the poor machine until it started
working again about every day, I finally replaced its Econgas
control unit and, of course, I tore the old unit apart.
It's a nice piece of kit, It seems to be made by a Dutch firm
called Pijnenburg, a name that I only associated with a
particular brand of Dutch cakes before. ;-)
Maybe more later about the internals of that unit, or maybe
never, it depends on whether I find any other interesting stuff
inside.
But wat got me started was its nice control panel,
containing three red 7-segment LED displays, three buttons and
a Micrel MM5480BN shift-register based LED driver. Something
that just screamed to be hooked up to my trusty Arduinos!
Follow the read link above to read the whole story.