Eye-Spy : Can you guess whats this ?

How to make simple Infrared Sensor Modules

Overview :

In this tutorial we will see how to make simple infrared sensor module for detecting reflecting surface. This sensor can be used to detect reflecting silver/white strip, obstacle detection, flame detection, etc. These sensors are primary requirement of any simple line follower robo-car.

Component Catalogue – Cirkit Electronics, Lamington Road

Last week I had been to cirkit electronics for purchasing some AVRs. I got this catalogue from them. All components listed in catalogue are available in RETAIL/BULK at cirkit. Hope … it will reduce headache related to availability of components !

Servo Electronics – Motors catalogue

I had been to servo electronics recently. This is the handout I got from there. It has information about different types of motors available at Servo Electronics. Good reference …..

I Dream of Jeannie

It was my favorite program, when I was a in school. I used to watch it regularly. That time cable TV was not that much common in our city, so I used to go my neighbour everyday and watch Small Wonder and I dream of Jeannie. It was a classic serial and  was very famous in America, when it was first aired in 60s.

It had five seasons and over 130 episodes. Here is the collection of links for all 5 seasons.

http://greattvshows.smfforfree.com/index.php?PHPSESSID=7762deaed168d918d699a022fa644841&topic=30.msg36#msg36

More information :

I Dream of Jeannie – Wiki

AVR : Tutorial 2 : AVR – Input / Output

         UPDATE : 10 FEB 08 – illustration added

Tutorial

Overview

You cannot imagine to use microcontroller without using any of its i/o pins. Finally its all about  : taking input , processing it and generating output ! Thus i/o registers and their correct settings is indispensable part while learning to program any uC.

We will learn how to use AVR ports and actually ‘code’  for writing/reading data to/from port pins. It is slightly confusing for beginners, however once you understand it, you will certainly appreciate the way it is designed.

NOTE : I will frequently refer to  ‘configuring pin’ or simply ‘pin’. Remember, a port has multiple pins. Thus in order to change setting for one port, you have to change setting for all port pins of that port. To change setting for one single pin of the port, you have to change a particular bit in associated register. Got that ? If not read this para again.

Designer Apple

Mom bought new apple cutter yesterday. After cutting the first apple, I got surprised by its beauty. I quickly grabbed my K750i and clicked some snaps.  See … how beautiful it looked ….