OnaBlog

TrueCrypt

2012-02-10T06:07:00.000-07:00

I was having problems getting truecrypt to work on my ubuntu machine. Once I downloaded it and unzipped it there was no extension and for some reason my machine didn't know what to do with it. I simply renamed it with a .sh at the end and re-ran the file, everything worked as advertised at that point. I.E. FROM: truecrypt-7.1a-setup-x86 TO: truecrypt-7.1a-setup-x86.sh Good Luck

Android Like SQL Statement, sqllite sql software

2012-01-10T07:18:00.000-07:00

While using sqllite sql software for android, I was runing into problems. I was able to do exact matches, but for some reason I couldn't get LIKE matches to work. I was hunting around like crazy trying to figure out how to write a LIKE statement in Android. I had a working example of '=' and figured it would be pretty simple to use the LIKE command. After many variations I just couldn't figure it

MSP430 TI Launchpad

2011-12-05T06:35:00.000-07:00

Links of interest. http://hackaday.com/2010/08/11/how-to-launchpad-programming-with-linux/ http://springuin.nl/en/articles/launchpadwindows http://hackaday.com/2011/02/24/debugging-msp430-using-eclipse/ http://hackaday.com/2011/02/15/learn-to-debug-msp430-chips-using-iar/ http://hackaday.com/2010/08/13/porting-code-to-msp430/

Music Glove Part 1

2011-10-17T20:45:00.000-06:00

Well after much heartburn (and once again being burned by pull down resistors). I have managed to make some progress. I now have half of my Music Glove prototype complete. This is the hardware side. I paired a bluetooth module from sparkfun (something that does uart). With an arduino to handle the button presses. I can now receive an A and a B from my button presses on my phone using the

Folder Permissions

2011-08-16T06:37:00.000-06:00

I've been having problems with folder permissions on ubuntu, oddly enough, trying chmod 777 on stuff wasn't really working well, basically I just did gksu nautilus then I modeled the "permissions" tab to the same as a folder I wanted permissions to be the same as. Apply to all files/folders within and viola it worked. Hope that helps others. Originally found the command from http://

Boxee Update DEB

2011-08-09T21:36:00.000-06:00

I was hoping to download boxee for my recently updated media server. Turns out that boxee has some issues with the package downloadable from here: http://www.boxee.tv/make#content The original site I built the script to mimic is located in the source code. The file which did the job for me can be found here: Boxee Deb Fix Good luck!

getc/getchar why doesn't it wait?

2011-07-29T08:00:00.000-06:00

So getc is basically the same as getchar but to get the same effectgetc(stdin) = getchar basically.http://www.cplusplus.com/reference/clibrary/cstdio/getc/From the above link:Returns the character currently pointed by the internal file position indicator of the specified stream. The internal file position indicator is then advanced by one character to point to the next character. What this means

Forward Declaration vs Function Prototyping, What's the difference?

2011-07-28T19:00:00.001-06:00

Valid Conditions The following will be how we can get a successful compile. This would be using Function Prototyping: ### BEGINNING OF FILE### ... // declarations of whatever you want void INSERT_STRING (char b); int main() { INSERT_STRING("A"); } void INSERT_STRING(char b) { // Where INSERT STRING is literally implemented. } #### END OF FILE #### This would be Forward Declaration. ###

Building an Echo Server using Bluetooth and Blueterm

2011-07-16T14:44:00.003-06:00

I recently picked up the Bluetooth moduleRN-42 This was a cheap low cost way to integrate Bluetooth into an upcoming project. First up was getting the pieces soldered. Thanks to Walter over at Walter's Epic Blog he hooked me up with a great soldering job. He soldered up the power, ground, tx and rx lines, as well as the required SPI lines in case I need to program the device. I got the itch a

AsyncTasking

2011-07-10T00:06:00.000-06:00

I was attempting to place my calculations from eecon into an AsyncTask. I initially thought I would make a common task, calling it from both my find factor activity, and my find interest activity. I had to deal with the whole mess of figuring out which one was being called, and whatnot. Then I ran across the problem of getting the data back from the task. I initially tried using the getstatus

Admob in Android

2011-07-02T17:21:00.001-06:00

This link is great for just throwing a quick ad in with admob into your app. http://code.google.com/mobile/ads/docs/android/fundamentals.html followed by the following: http://code.google.com/mobile/ads/docs/android/banner_xml.html Basically you add the "publish code" jar to your app, then insert a few lines into your manifest. Then you place the banner into your app where you want. The one

Job At Google

2011-04-04T20:39:00.001-06:00

Well I finally did it, I applied at Google, I don't know if I'll ever feel ready with the epicness this company has brought to every household. If not, I won't discourage, I'll keep working, if anything I'll create a business that Google will want to buy, so I'm not too worried, if it doesn't happen now, it will someday, but then again someday I might be ready for my own business and will be able

Ideas

2011-03-28T14:52:00.000-06:00

How often do you have "big ideas"? It frustrates me as I have so many ideas so frequently, and I don't have enough time to implement them all. Once school is out, I'll have some more freetime and will finally be able to hit on all the projects I've got queued right now. Stay tuned, when May hits, there will be a lot, I might even start making more videos about the projects and build process.

Google Market vs. Amazon Appstore

2011-03-24T05:00:00.000-06:00

The Amazon App store looks good, and yes I do like the recommendations and whatnot just like regular old Amazon. My question for the big G is this, we had to check "unknown sources" just to get the appstore on our phones and download apps through them. Recently there were some issues with some apps found in the Android App Market and this prompted google to remove apps from their store, as

Batch Renaming

2011-03-22T23:08:00.002-06:00

I have a bunch of MTS files that I get from my camcorder, and frankly I don't have any interest in sitting down and renaming each file by hand, in perl this is a pretty simple case, I decided I wanted to name them based on their creation date, then number of file in that creation date. I still would say read over this script and make sure you understand what it is doing and then go ahead and use

ECE331 Algorithms and Datastructures

2011-03-02T14:21:00.003-07:00

I will be posting all of the lecture audio files at this location, stay tuned. 3_2_2011.wma 2_16_2011.wma 2_14_2011.wma Thank you, Tyson

GoogleTV

2010-12-24T20:08:00.000-07:00

Right now I am watching Youtube on a Google TV. I see some things that should very much be fixed. Frankly the video should be larger,the page itself takes up a ton of space, and the suggestions, those should be a side bar pop-in, same with comments. Here's a quick screenshot: and it looks almost exactly like this on the tv, and if all I was doing was websurfing, this wouldn't be a problem, but

SPI vs UART vs I2C vs Four Event Protocol

2010-12-08T09:02:00.000-07:00

I had to write a paper for my Computer Organization and Architecture course. Its due this evening but if you want to take an early look I've shared it on google docs. I plan to make a few grammatical edits, if you have any additional suggestions or comments I'm all ears. Here's the link: Communication Protocols

Coroutines

2010-11-15T21:11:00.000-07:00

Today we talked a little about coroutines, at first glance based on the slides it seemed like they were saying that the coroutines would start at the beginning and end when they return, this was a little confusing as they seemed to be identical to procedures. Turns out we were misunderstanding the picture. From Wikipedia:In computer science, coroutines are program components that generalize

Circuit Analysis II Lecture 13

2010-11-05T07:24:00.000-06:00

****THE BELOW IS INCOMPLETE, but I'm releasing it in case anyone can get some value out of what was written.**** Disclaimer: This series of posts is to serve as notes for myself as well as any others interested in the subject of Circuit Analysis II. This is the course ECE 213 at UNM.The course will follow the book: Electric Circuits (8th Edition) Agenda for the day: 13.6 - AP 13.12 13.7 AP

Circuit Analysis II Lecture 16

2010-11-05T07:23:00.000-06:00

ECE 340 Test Review

2010-11-05T07:16:00.000-06:00

****THE BELOW IS INCOMPLETE, but I'm releasing it in case anyone can get some value out of what was written.**** So I have been looking at the explanations for the first problem, and right away I believe looking at the problem and analyzing it will go a long way in this case. 1.a) Looking at the first part of problem 1, we see that it says "What is the probablility that both engines fail during

Page Replacement Algorithms

2010-11-02T21:56:00.000-06:00

There are many page replacement algorithms, this week we were asked to implement the fifo and lru page replacement algorithms. But, first a little primer. FIFO Page Replacement The fifo page replacement algorithm is essentially a queue setup that pushes the first items into the list out first when the list is full, so for example, if you have the numbers 1,2,3 and they are put into the array in

Virtual Memory

2010-10-30T11:00:00.000-06:00

So we were asked to devise a way to figure out which page a particular physical address was in, as well as it's offset. Turns out this is a really simple problem, in this case each page is 4kb, which really means 4096 bytes, so simply take the address, divide by that 4096 bytes, and that tells you which page it's in. From there you subtract the number of bytes of the previous pages (4096 * n)

Bankers algorithm

2010-10-30T10:27:00.000-06:00

The Algorithm The bankers algorithm seems to be a pretty simple algorithm, essentially what you do is have some defined amount of resources, and then you kick off a bunch of threads, now if there are resources left, the thread can run and do it's thing, but if there are no resources, the thread must wait. Deadlock The key here we need to ensure is that there is no possibility of a deadlock. A