Awesome CMOS illustration applets found!

So I’ve been dragging my feet, trying to really wrap my brains around how nMOS, pMOS and the ever awesome n&p party called CMOS really get along, when I came across THIS freaking awesome page that really provided the illustration for how these things work that I’ve been looking for! The page that hosts this demonstration page I’m talking about is for some university in Hamburg, so I’m really thankful their page was written in English.

Anyone out there taking a course involving CMOS logic should really test/augment their understanding by taking a run through this page. It’s so freakin helpful!

For those who are bizarrely keen, the course I’m taking that relates to this is ENCM467 at the University of Calgary. Feel free to check out my notes for some vague scribblings related to this.

pfsense 1.2.1-RC2 Atheros Wireless Issue addressed

Hello, I recently upgraded one of my routers from pfsense 1.2-RC4 to 1.2.1-RC2 and ran in to a nasty issue regarding my wireless access point seemingly vanishing from existence.

It took a few hours, but I figured out a work-around and posted how to resolve the issue. The jist is in the upgrade from FreeBSD 6.x to 7, somehow the Atheros wireless setting for auto selecting a channel changed such that using auto selection would cause the wireless card to use channel 0 – which is non-sense. My “fix” was to manually select a channel. This was enough for my purposes.

For those who have no idea what I’m talking about – perhaps this would be a good place to get a point of reference.

School Notes Section Reborn

Okay, so it’s not really news that I often take my notes for school on a tablet. I first started posting some of my notes over a year ago, however the way I was doing it took me quite a bit of effort/time to post a single lecture. Now I’ve re-worked my process and created the new notes section. While I feel this section isn’t as “pretty” as it ought to be, it is very easy for me to add new notes to it. I’ve since added all the notes for all the courses I currently have and have also pasted in course descriptions. I only really expect a few of my peers to derive any real benefit from this, but, hey, you never know, other people may find it helpful too.

Calgary Traffic Web Cam info Aggregated!

So, I was checking out this neat City of Calgary (where I allegedly live) Traffic Website. It shows a cool map of the city with little camera icons for each location where the city has a web cam setup. What I didn’t like about this setup is that you can only look at one camera at a time and they expect you to click on each icon to bring up the view. So I looked at how they structured things a bit and just whipped up this page that gives a sense of the city all at once. Check it out!

I also noticed that on the City of Calgary page, they only use something like half of the web cams that they have configured to post their images (at least in the way as used by their website) – so I’ve included those web cams in this page. At this time, there’s 42 in total (as opposed to 22 on their site linked above).






Arduino/Freeduino Play

Here’s a video I decided to toss up on YouTube just showing some of the results of some of the goofing around I’ve been doing with my Arduino board (it’s actually a Freeduino).

I had a lot of trouble getting the board to work at first, but once I ran it through an ultrasonic cleaner it seemed to smooth out a lot. Though, some times it still has a hard time programming, in which case I can just apply pressure to the FTDI chip and then it’ll program. I’ve tried re-soldering the pins on the FTDI, but that didn’t entirely resolve the issue enough. Not to worry though, it consistently works perfectly enough for me.