Wednesday, September 25, 2013

eBook Collection 300+ authors - sci-fic, fantasy, classic

Reading is a complex developmental challenge that we know to be intertwined with many other developmental accomplishments: attention, memory, language, and motivation, for example. Reading is not only a cognitive psycholinguistic activity but also a social activity.

So,it a great pleasure to give you this eBooks freely.Books are in pdf format majorly while some are in mobi and epub.

The number of authors for this collection is more than 300. The authors list is this. From famous Harry Potter, Lord of The Rings, Game of Thrones to old classic and new horrors. So why go for torrents.Just download directly.

Please comment your ideas.

Horescope Application

Astrology is the art of interpretation of the stars. For more than 3000 years, people have observed the heavens and assigned meaning to the constellations above.

For individuals the horoscope is a kind of "psychological map" which shows certain patterns of their personality. Further I am not going to describe the astrology and horoscope more .There are plenty of articles in Web to get the idea of astrology and horescope.

The application "Star"can create your Horoscope and related information as Maha Dasa, Athuru Dasa and many more.
From "Match" application you can see the matching level of  two horescopes for marriage.Actually the word is Porondam in Sinhala. The Visi porondam, Ata porondam and the percentage will give you the matching level.

Download Horescope

Tuesday, March 5, 2013

CFL Bulb Recycle

  • CFL - Compact Fluorescent  Light
  • So simply CFL is the compact version of so called Tube Light. The CFL manufactures has miniaturized the traditional components of tube light as starter ,chalk using electronic components.
  • So after the burn out of CFL if the warranty period has passed , simply we throw away the CFLs.
  • BUT do you know most of the burn out CFL bulbs ( over 80%) have burn out because of the BULB unit , not the circuit.
  • So simply we can use the circuit to make a new bulb.



Only the thing we need is a tube light.

A tube light has 4 connectors, and the CFL circuit has 4 output connectors.

Using four wires, we can connect them to the tube light. First unpack the CFL circuit chamber(use a hacksaw and screwdriver to unpack easily) . Then you can see 4 wires go to the compact tube bulbs. You should disconnect them and connect them to the normal tube light. Please connect the adjacent two wires to the one side of tube  light connectors.Use your soldier to simply connect. If the circuit unit is working properly the tube light will light up.

To check whether the circuit is working , connect a same type ,same Wattage CFL tube bulb unit to the checking circuit.

Please remember that the Wattage of the tube light should match to the Wattage of the CFL circuit. As an example if you use 2 feet tube light use the circuit of 18W CFL circuit unit. So both the bulb and circuit power level is same and it causes a longer life of circuit and bulb.

I have made several bulbs with this modification. I had got 6 burn out CFL bulbs and only one of the circuit unit was not working, other five works perfectly. So try this. It saves money.







Please comment your ideas.

Saturday, February 4, 2012

Two wire stepper motor Control with PIC MCU (16F877A)

Only two wires are needed to control a stepper motor by a PIC .It is very much useful when number of available I/O pins are limited .The conventional stepper motor control needs four wires.Only the thing I have done is design a simple 2 to 4 decoder and use it in between the PIC and stepper driver(ULN2003A).




So the logic expressions are as follows.
   P=B'
   Q=A xor B
   R=B
   S= A xnor B = (A xor B)'




So implemented codes and diagrams can be downloaded from here. MikroC was used for programming and for simulations Proteus was used , the implemented circuit works nicely.

Please comment your ideas.

Wednesday, June 1, 2011