Dinushka95 Web Blog

I have seen many WiFi location everywhere, most of they are having some kind of password  but now  days if your home router is hacked all your personal information and even data in your hard drive could be accessed even by an unskilled hacker. If you are using WiFi connection, Hacking is very easy because no physical connection is required. So if you get SSL certificate error be careful, always check router first, if your getting an error.. Never skip those errors. I never liked WiFi but in the current time you have to use it..  So I  recently bought a nexus 7 and a portable 3G router.,  so when I am traveling I could just carry it me. One headache was how to configure it and I want everyone not know even I had a WiFi connection.

This was one of   projects on our. The objective of this robot is to follow a line and when it find the box on the line it should pick-it-up and then it finds the mark on the track it should drop it.

My first line following robot was made using servo and IR sensors, WHICH NEVER worked because of my bad design.. But i learned a lot from it and then my second line following robot  was designed. it was designed for a project  ... Coding file

i always see these arduino projects on the internet and wanted to try the stuff. But unfortunately it is very  expensive in sri-lanka, so planed to  but one from E-bay which will cost around rs3000. Then i recently found a tech podcast which is done by some sri-lankans called techkata.  They were manufacturing arduino clones for around rs1300 with the usb to serial convert. so i bought the kit and did video record  assembling the kit. But some how  i have  accidently  deleted the video. And i am  only able to show pictures of the assembled broad.  i planning to do lot of project in the future with it like a digital clock ,automatic water pump  control and monitor system and many more. Buy an TECHDUINO-http://shop.techkatha.com/ from the above link you can visit the website and order one

These plans were downloaded from RCpowers.com

It all started when i wanted to water-cool my PC, i search for a water- pumps on Sri-lankan market and  didn't find any good one but i manage to find a fish tank clening pump but it was expensive and noise. so i started to search on E-bay but they were expensive to ship to Sri lanka. so i did some research on the internet about home build water pumps and got some idea on centrifugal water pumps and how they work... when i was a small boy i saw a plumber repairing household water pump  and wondered how it work. Because at that time i couldn't understand how a spinning wheel could pump water. Wikipedia about Centrifugal pump http://en.wikipedia.org/wiki/Centrifugal_pump The challenge was to make a water pump, from what every i can get my hands on; around the house so that  i could keep my cost to minimum and have fun enjoying building it  .... Motor inside a coke...