How to install image Raspbery Pi ?

1. Download the image from a mirror or torrent. The remainder of this assumes you are using the Raspbian “wheezy” download 2012-12-16-wheezy-raspbian.zip      http://www.raspberrypi.org/downloads

2. Extract the image file 2012-12-16-wheezy-raspbian.img from the downloaded .zip file.

3. Insert the SD card into your SD card reader and check what drive letter it was assigned. You can easily see the drive letter (for example G:) by looking in the left column of Windows Explorer. If the card is not new, you should format it and make sure there is only one partition (FAT32 is a good choice); otherwise Win32DiskImager can make corrupt your SD card!

4. Download the Win32DiskImager utility. The download links are on the right hand side of the page, you want the binary zip.

5. Extract the executable from the zip file and run the Win32DiskImager utility. You should run the utility as Administrator!

6. Select the 2012-12-16-wheezy-raspbian.img image file you extracted earlier .

7. Select the drive letter of the SD card in the device box. Be careful to select the correct drive; if you get the wrong one you can destroy your data on the computer's hard disk!

8. Click Write and wait for the write to complete.

9. Exit the imager and eject the SD card.

10. Insert the card in the Raspberry Pi, power it on, and it should boot up. There is an option in the raspi-config script that comes up to automatically expand the partitions to use all of the SD card if you have used one larger than 4 GB

In Windows the SD card will appear only to have a fairly small size - about 75 Mbytes. This is because most of the card has a partition that is formatted for the Linux operating system that the Raspberry Pi uses and is not visible in Windows.

Raspberry Pi Hardware

Initial sales ar of the Model B, with plans to unharness the Model A in early 2013. Model A has one USB port and no LAN controller, and can price but the Model B with 2 USB ports and a 10/100 LAN controller.

 

Though the Model A does not have AN 8P8C (RJ45) LAN port, it will connect with a network by employing a user-supplied USB LAN or Wi-Fi adapter. there's essentially no distinction between a model A with AN external LAN adapter and a model B with one in-built, as a result of the LAN port of the model B is really a intrinsic  USB LAN adapter. As is typical of contemporary computers, generic USB keyboards and mice ar compatible with the Raspberry Pi.

 

The Raspberry Pi doesn't go with a time period clock, thus AN OS should use a network time server, or raise the user for time data at boot time to urge access to time and date for file time and date stamping. However, a time period clock (such because the DS1307) with battery backup is added  via the I²C interface.

 

On twenty April 2012 the schematics for the Model-A and Model-B were discharged by the Raspberry Pi Foundation.Hardware accelerated video (H.264) cryptography became out there on twenty four August 2012 once it became familiar that the present license conjointly coated cryptography. antecedently it had been thought that cryptography would be added  with the discharge of the proclaimed camera module. but, for the nowadays, there's no stable computer code support for hardware H.264 cryptography.

 

At constant time the Raspberry Pi Foundation discharged 2 further codecs which will be bought one by one, MPEG-2 and Microsoft's VC-1. conjointly it had been proclaimed that the Pi can support CEC, sanctioning it to be controlled with the television's remote.

 

On five Sep 2012, a revision a pair of.0 board was proclaimed, with variety of minor corrections and enhancements.On fifteen Gregorian calendar month 2012, the Raspberry Pi foundation proclaimed that every one new Raspberry Pi model B's would be fitted with 512MB RAM chips rather than 256MB chips.

Raspberry Pi control Servo

If you like a toy or a hobby that is enforced by the radio or the robot may be familiar with servo (servo) which acts receive commands from the receiver to rotate on its axis to how much the order of the. Raspberry Pi is then forced to take any photo. I have to make this happen. By creating a circuit using ATtiny2313 processor with GPIO output then the Raspberry Pi has three servo.

Raspberry Pi Introduction

What is Raspberry Pi ? Please watch this video. Raspberry Pi Introduction .

Raspberry Pi 1- Wire Digital Thermometer Sensor.

 A simple way to measure temperature using my Raspberry Pi I came across the DS18B20 1-wire digital temperature sensor.

 

The diagram on the right shows the DS18B20 device. It has three pins and comes in a TO-92 package which means it looks similar to other devices you may have used such as transistors.

Pin 1 is Ground. Pin 2 is the data pin and Pin 3 is the power pin. The only external component required is a single 4.7Kohm resistor.
In my testing I didn’t have one of these so I used 2 x 2.2Kohm resistors in series. This worked fine.

 

Pin 1 was connected to P1-06 (Ground)
Pin 2 was connected to P1-07 (GPIO4)
Pin 3 was connected to P1-02 (3.3V)
A 4.7Kohm resistor was placed between Pin 2 and Pin 3.
It is important to double check that you don’t confuse Pin 1 and Pin 3 on the device otherwise the power will be applied the wrong way round!
Once you have connected everything together you can power up your Raspberry Pi.


Command for config Sensor

#sudo modprobe w1-gpio

#sudo modprobe w1-therm

 

commands below to go to the directory that contains the detected 1-wire devices 
#cd /sys/bus/w1/devices
# ls

This will list the directories associated with your 1-wire devices. Each one has a unique ID and in my case it is 28-00000482b243. Your ID will be different so be sure to use that in the example code below. Using “cd” we can change to the temperature sensor directory, list the contents and then view the “w1_slave” file :

# cd 28-00000482b243

# ls

# cat w1_slave

 

 

The complete command line setup process looks like this :

Credit : http://www.raspberrypi-spy.co.uk/2013/03/raspberry-pi-1-wire-digital-thermometer-sensor/
 
 

Basic Raspberry Pi Temperature Sensor



DeviceHive is powerful and yet easy. To make it even easier to understand, let’s take this simple example of the fun project that you can build in just a few hours. How about building a remote temperature sensor and a remotely controlled LED? This can be a very good starting ground, which you can take further. Think replacing LED with power relay and controlling light in your room, and adding humidity sensor and, say, light sensors to better monitor the environment and report everything on your mobile device?
This sample can work on virtually any embedded linux board which has (1) python (2) 1-wire kernel drivers
In order to do this, you will need:

• Rasbperry Pi Rev. B (http://raspberrypi.org) or any other inexpensive Embedded Linux development board, like gumstix, or beaglebone.
• Dallas 1-wire temperature sensor: DS18B20 – available everywhere :-).
• Any LED
• 510 ohm resistor for LED and 4.7K ohm (or so) resistor for DS18B20
• Breadboard

The schematic is as follows, the sensor will be powered from RasPi’s Pin 2, no external power needed:

 

 

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Raspberry Pi and Case (Model B 512MB RAM)

The Raspberry Pi is an ultra-low-cost, deck-of-cards sized Linux computer. Developed by the Raspberry Pi Foundation in the UK, the Raspberry Pi aims to put the fun back into learning computing by promoting the study of computer science and programming at a school level.
This purchase is for 1 x 512MB Raspberry Pi Board and 1 x ModMyPi Case in the colour combination of your choice!

The Raspberry Pi Model B features:
• Model B Revision 2 Raspberry Pi with Mounting Points and 512MB RAM
• The Broadcom BCM2835 ARM11 (The one that you find in most smartphones) 700Mhz ‘System on Chip’ Processor (Similar performance to a 300MHz Pentium 2 Processor).
• Integrated Videocore 4 Graphics Processing Unit (GPU) capable of playing Full 1080p High Definition Blu-Ray Quality Video (Roughly equivalent graphical processing power of an Xbox 1).
•512MB RAM
• The free, versatile, and highly developer friendly Debian GNU/Linux Operating System
• 2 x USB Ports
• HDMI Video Output
• RCA Video Output
• 3.5mm Audio Output Jack
• 10/100Mb Ethernet Port for Internet Access
• 5V Micro USB Power Input Jack
• SD, MMC, SDIO Flash Memory Card Slot
• 26-pin 2.54mm Header Expansion Slot (Which allow for peripherals and expansion boards)
It is clear that this tiny computer will have many other applications outside of being just a learning tool. Demos already show the Raspberry Pi running games, word processing, managing spread-sheets and playing high-definition video.  With access to the internet, through Ethernet or Wi-Fi (with a USB dongle), and a high definition output, the Raspberry Pi is an incredibly versatile piece of computing kit. Most importantly the Raspberry Pi gives every child in the country a chance to own a personal computer which they can develop, learn from, and play with, at an incredibly low cost and in an unbelievably small package.

The Raspberry Pi MUST be purchased with a case and comes without any other peripherals.
More Information

For more information about the Raspberry Pi and the Raspberry Pi Foundation, visit the Raspberry Pi Foundation’s Website: http://www.raspberrypi.org/