Information Technology Blog (Archive)

"Water Level Monitoring and Data Acquisition System" Note: Go to this post   to have an overview of our SP As of 12/09/10 we have prepared all the things we will be needing for our project. The only thing that's keeping us from moving on is we haven't purchased any materials yet. The problem is the budget. We have finalized the list products we will be purchasing from Sparkfun.com which amounts to almost $250 or Php 11,000. The sensor circuit and alarm system is not included in the list yet. But this is our current progress as of now 1. Sparkfun list (Arduino, XBee, Wireless Shield, Dongle) 2. XBee network parameters setup (Coordinator, End Devices) * 3. Arduino code V1.0 of the two "motes" - sends the analog reading from sensor and corresponding ID of the mote 4. Visual Basic application V1.0 - reads data from serial port - parses the string                     - identifies the source o...

I rebuild the network model (not the exact) using Packet Tracer  we actually designed and implemented last October 24, 2010 during our Cisco Final Skill-based Assessment in which we are required to design a network with 2 domains (LAB1 and LAB2) where each domain contains different VLANS. We should also implement router-on-a-stick to make the VLANS communicate with each other. Plus some hosts must be able to connect to the Cisco Server and access the Cisco curriculum, while some will be refused connectivity from the wireless routers using Mac Address Filtering. The one biggest mistake we did was to configure the trunk interface of the switch connected to the router  (R1) with a Native VLAN with the command: S2(config-if)#switchport trunk native vlan 88 Thus, the switch cannot be pinged by any other device except the router it is directly connected with. That issue took us 4 hours to troubleshoot, (6 hours of completing the whole activity + 4 hours of troubleshooting = 10 hours...

 Yay! Finally I had a taste of GUI in Java, but actually I used JFrame Form. It can perfom basic arithmetic, modulo, power of 2, square root, decimal to binary, changing of sign and includes the C, CE and Backspace buttons. I really enjoy making interactive applications like this one, and the Actionscript 3.0 game I've posted before. The challenging part is taking note of every possible input and making your application handle it (but honestly it helps improve my logic skill).

For our senior project we are going to develop a Wireless Sensor Network (WSN) prototype system which will monitor water level in a certain flood-prone area in Naga City. For this, we have chosen Zigbee as the technology to use. The title of our study is "Zigbee-based Water Level Monitoring and Data Acquisition System" which is based on a previous study developed by another set of senior year students in our university two years ago. The system delivers great features like SMS flood forecasting but since it was built from the traditional wired communication, certain limitations hinder its successful implementations. These limitations are a) scalability and b) flexibility in terms of distance and locations. Thus, our group aims to overcome these limitations by developing a wireless prototype of the said system. However, we are not going to include the SMS feature of the previous system and instead focus on the deployment of the wireless network with reliable data acquisition. ...

This is my linux shell program written in c. I will post a download link of the PDF of the code soon. :) ============================================= INTRINSIC COMMANDS cd - prints the current working directory. cd <directory> - changes the current working directory to the specified. (e.g cd Videos) echo - print rest of line as comment. (e.g echo helloworld) environ - list the shell environment by having the built-in pointer: extern char **environ pause - wait for the user to press ENTER key to continue quit - quit the shell help - print this help script ============================================= ALIASES clr - clear the screen dir - list the contents of current working directory dir < directory > - list the contents of <directory> (e.g dir Videos) ============================================= I/O REDIRECTION programname < inputfile - stdin is read from a file rather than the keyboard programname > outputfile - stdout is r...

This is my first time to program an Actionscript 3.0 flash game.  Thanks to this tute which provided the framework source code. I just modified the interface, put a scoring, trivia for every correct answer, final score feedback. I also  randomized the words and changed the theme of the game. This game is about the Philippine National Symbols and elementary students are the main player of this game. *UPDATED improved hints, trivia for every correct answer (07-31-10) *UPDATED score feedback and game finished (08-01-10) *UPDATED improved game interface (08-02-10) This is the full game which includes other games created by my friends (as our school project). Mine is the first game on the main menu 'National Symbols'. Some games won't work though because they are only linked and not embedded on the main swf file. Feel free to try it :) I hope this is already bug-free. credits to blog.spoongraphics.co.uk for the cute monster :D

Yesterday I tried to follow this tut and this is the finished product: Following this tut by Chris Spooner of Blog.Spoongraphics, I discovered the use of some Adobe Illustrator Tools and applying effects to a graphics. I wanna practice more until I master all the tools and effects and I can finally create my own design. And this morning I am so happy that I received a reply from Mr. Spoon himself in twitter when I showed him my work. I did not expect that he will see my tweet but he did!! Mr. Spoon is one of the designers I admire because he is so freakiiin good! Someday I hope to be like my idols! He has two tutorial design blog and writes awesome tuts.

This is actually one of my lab activities in my database laboratory subject, 2nd semester SY '09-'10. Calculator built on Oracle Forms6i. -performs basic arithmetic -and functions found on the basic calculator for Windows XP -includes error handling which displays error messages for the user Download Source Code