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INTRODUCTION:                        S.A.T   plate is a new variation in the design of our food serving utensils. This innovation helps us to harvest chemical energy to keep our food warm in the plates which we use to serve the food. This is a simple innovation, yet effective in our day to day life.                       The S.A.T plate is designed to overcome the problems of keeping the food warm for longer duration of time. This invention allows people to have their food and at the same time keep the food warm. Many of us are slow eaters; this means that the food loses its temperature before we complete eating the food. Hence the S.A.T plate is designed to overcome problems like these. WORKING:                          Sodium acetate tri hydrate crystals melt at around 331 K .  Sodium acetate tri hydrate has a special property,  Th at is   when they are heated to around 373K, and allowed to cool, the liquid solution becomes   supersaturated at this poi

In this post I will teach you how to remotely access your rasperry pi from another computer on the same network. we can access the raspberry pi without connecting a monitor, keyboard or a mouse to it. I assume you have downloaded the SD card Image of raspbian "wheezy" or similar. and setup your SD card. By default the ssh will be enabled on the raspbian "wheezy". Now you just need to insert the SD card and plug in the LAN cable or a WiFi Dongle. check the connection once and power it up. now you have to find the internal IP address for the raspberry pi. The common one is to connect it to a monitor and connect a keyboard. power it on and enter user name: pi password: raspberry Now type ifconfig , scroll and find the IP address. usually i will start from 192.168.x.x. note down this IP address. The second method which I discovered was to log in to your WiFi router (I had connected my raspberry pi to LAN using the WiFi router). In this method you need not connect a moni

There are numerous Ways to make Hydrogen gas. It is the main component of water. So I shall show you one technique to make hydrogen gas. Materials required:  Aluminium : I used aluminium pieces which I found in my garage. You can also cut pieces of coke/red-bull can and use NaOH : I took NaOH pellets Water Test tube or conical flask Depending upon how much hydrogen you want to produce. Test tube stand Balloon : select the appropriate size of the balloon. rubber band Source of ignition: To test The hydrogen. Now follow these steps: Step 1: Take the Test tube and fill it with water. Dissolve the NaOH pellets. If you have ready NaOH solution, Then you can use that. Step 2: Now add the Aluminium pieces.(If you want to produce hydrogen faster then you have to use aluminium powder instead of pieces.) Step 3: Tie the balloon to the Test tube using the rubber band. and mount the test tube on the test tube stand. NOTE: The reaction is exothermic. There is a lot of heat produced.So do not try t

First up blinking LED! Blinking LED is the basic and the first thing you should learn.First let us connect the Arduino to the computer. Then start the arduino IDE. if you do not have the IDE, then visit the Arduino Website and download it.when you open the arduino IDE you will see the following window. Arduino IDE Now go to tools, boards and then select the board you are using. I am using a Arduino duemilanove. Arduino Duemilanove Now go to tools, Serial port and select the port to which you have connected. If you dont know the port just select one port and upload the program. If you get an error then change the port until the program gets uploaded. now let us write a program to blink the LED. By default, there is an LED connected to Pin 13 on the board. So for testing we do not require any other peripherals. Start typing the following lines of code. The following code is in C language. Code: void setup(){     // What ever is written within these brackets are executed once. pinMode(13,

Hey guys! Lets start experimenting with the arduino. I have an arduino duemilanove. with the following parameters... ARDUINO Microcontroller : ATmega328 operating voltage :  5V Input voltage :  6-20 V Digital I/O pins :  14 Analog Input pins : 6              DC Current per I/O Pin : 40 mA DC Current for 3.3V Pin :  50 mA Flash Memory : 32 KB SRAM : 2 KB EEPROM :  1 KB ClockSpeed :  16 MHz First up blinking LED! Blinking LED is the basic and the first thing you should learn.First let us connect the Arduino to the computer. Then start the arduino IDE. if you do not have the IDE, then visit the Arduino Website and download it.when you open the arduino IDE you will see the following window. Arduino IDE Now go to tools, boards and then select the board you are using. I am using a Arduino duemilanove. Now go to tools, Serial port and select the port to which you have connected. If you dont know the port just select one port and upload the program. If you get an error then change the port un

Peltier module Peltier module is a device which uses the peltier effect to create a heat difference between the two sides of the device.In simple terms its like a heat pump. It takes the heat from one side (The side which becomes cold) and transfers it to the other side (the side which becomes Hot). These are very compact and efficient. A DC source should be connected to this module. The Peltier module I have, requires a 12 volts supply. They are available in a lot of power rating. The higher the power rating the higher the capacity to pump the heat from one side to another. As you can see the image it has two terminals, one is red for +12 Volts and and black for ground. I tried to connect a 12 volts lead acid battery but it was not providing sufficient amount of current. So I took an SMPS from my old computer and used the +12 volts supply. Advantages: They are compact. Small in size. The one I have is around 4cmx4cm. and it can easily freeze water. no refrigerant required. unlike con

Hey guys!  I have a Samsung galaxy S duos (GT-7562). I am traveler , hence  I tend to use GPS a lot which drains my mobile battery pretty fast. So I  wanted to build a portable charger for my mobile. I got a LM7805 voltage regulator and built a 5 V power supply. I connected it to a female USB port and tried to charge my mobile, but in vain. Then i took a SMPS from a spare computer in my workplace and connected the 5 V output to the female USB port and tried to charge my phone. Yet again my phone did not charge. I was puzzled, my   Raspberry Pi was working with both the chargers but not my mobile. So I  wondered whether Samsung engineers have utilized the same idea as apple. I  have an apple iPod 4G to charge apple products you have to connect the data pins to a certain potential, this is to prevent fake charging. So after a little research I found that the data pins must be shorted and the pins should be connected to +5 V  in series with a 33K resistor and connect it to ground with a 1

Raspberry Pi Model B The Raspberry Pi is a small desktop computer designed and developed by the Raspberry Pi foundation in UK. it comes in two models, Model A and model B. The one I have is a Model B. Model A: USB: Single USB connector Ethenet: No Memory: 256 Mb RAM chip: Broadcom BCM2835 SoC  CPU: 700 MHz ARM1176JZ-F. Can be overclocked to 1 GHz. Video: HDMI out / composite RCA Audio: 3.5mm Jack Storage: SD MMC SDIO Card slot OS: Linux Dimensions: 8.6cm x 5.4cm x 1.5cm Model B: USB:  Dual USB connector Ethenet:  Yes Memory:  512 Mb RAM chip:  Broadcom BCM2835 SoC  CPU:  700 MHz ARM1176JZ-F. Can be overclocked to 1 GHz. Video:  HDMI out / composite RCA Audio:  3.5mm Jack Storage:  SD MMC SDIO Card slot OS:  Linux Dimensions:  8.6cm x 5.4cm x 1.5cm