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Ever wondered to easily manufacture oxygen using household stuff??? you are at the right place! go and gather the following! Items required: Hydrogen peroxide (H2O2)  Potassium permanganate (KMnO4) Procedure: Now pour a little amount of  Hydrogen peroxide (H2O2) in a small container,never add too much because it is too dangerous and always wear protective goggles and gloves. now add a small amount of  Potassium permanganate (KMnO4). Water vapor and oxygen is released! you can test for oxygen by placing a match stick. I used 6% concentration Hydrogen peroxide (H2O2) you could use a higher concentration to get more oxygen and less amount of water vapor. video:

                I always wanted to spy on people, and one day when i was cleaning my room i came across a old logitech WEB camera and i decided to make something useful using it. and i had a brilliant idea. so i searched for a servo and the arduino and made this simple project which even a school kid can do. Items Required: web camera arduino board servo motor 10K pot Procedure:   first you need to connect the servo to the Analog pin zero of the Arduino board and connect the servo to the Arduino pin 9. Now connect the arduino to the computer and run the arduino software and paste the following code and upload the code now vary the pot, the camera rotates accordingly and you can use the software provided with the webcam to record or take pictures. Enjoy !! Please leave a comment if you try this! :) Video: Code: // Controlling a servo position using a potentiometer (variable resistor)  // by Michal Rinott <http://people.interaction-ivrea.it/m.rinott>  #include <Servo.h>  Serv