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Archive for the ‘Raspberry Pi’ Category

NAS using Raspberry Pi and Open Media Vault

April 24th, 2017 No comments

Raspberry Pi NASA simple easy to use Network Attached Storage by using Raspberry Pi and Open Media Vault open source NAS solution. The video demonstrates all detail about the Open Media vault.  In the make, I have used 2x 1 Tb HDD with  Raspberry Pi.

 

Links :

OMV OS Image Download: bit.ly/2q4ee4u

Win32 Disk Imager: bit.ly/2n3Lfwg
SD Formatter Windows: bit.ly/2ofKfFL Read more…

DIN Mount Enclosure for Raspberry Pi

April 7th, 2017 No comments

Phoenix Contact DIN Mount Raspberry Pi EnclosureRPI-BC DIN rail housing is designed to accommodate Raspberry Pi computers. Besides the Raspberry Pi boards, the housing can also be equipped with further printed-circuit boards to integrate additional components and circuits.

Features:
Tool-free mounting
Plenty of space for additional circuits on matrix or additional boards
Width: 107.6 mm
Compatible with Raspberry Pi A+, B+, B2, B3 (Model B Not compatible)
Can be mounted on the wall or DIN rail.Website :

Source: bit.ly/2lIrOsK (Phoenix Contact)

Links:
Element14 Roadtest : bit.ly/2jVZhBx
Buy from Element14: bit.ly/2l8aTlO

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IIC (I2C) Communication on Raspberry Pi by using JAVA

January 27th, 2017 No comments

IIC

This tutorial is all about IIC (I2C) communication on Raspberry Pi by using JAVA and for that, I have used Pi4J library. To demonstrate this in the tutorial I have used MCP23017 Port expander IC with Raspberry Pi. MCp23017 is a 16 Bit input/output Port Expander ICcomes with I2C Interface. To interact with the IC suing IIC (I2C) port  here we have used Pi4J and JAVA.

MCP23017 Features:
16-bit input/output port expander with interrupt output
Cascadable for up to 8 devices on one bus
25mA sink/source capability per I/O
Supports 100kHz, 400kHz, and 1.7MHz I2C™Compatible compatible modes

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Measure Distance using Ultrasonic Sensor HC – SR04 | Pi4J | JAVA | Raspberry Pi

January 16th, 2017 No comments

HC - SR04This is a simple tutorial showing how to interface HC – SR04  ultrasonic ranging module with Raspberry Pi to measure distance using JAVA. Ultrasonic ranging module HC – SR04 provides 2cm – 400cm non-contact measurement function, the ranging accuracy can reach to 3mm. The modules include ultrasonic transmitters, receiver and control circuit. The basic principle of work:

(1) Using IO trigger for at least 10us high-level signal,
(2) The Module automatically sends eight 40 kHz and detect whether there is a
pulse signal back.
(3) IF the signal back, through high level, time of high output IO duration is the time from sending ultrasonic to returning.
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Thermocouple Interfacing usng MAX31855 | Raspberry Pi

December 20th, 2016 No comments

thermocouple MAX31855Reading thermocouple data on Raspberry Pi using JAVA and Pi4J with the help of MAX31855 14 bit thermocouple to digital converter. The MAX31855 performs cold-junction compensation and digitizes the signal from a K-, J-, N-, T-, S-, R-, or E-type thermocouple. The data is output in a signed 14-bit, SPI-compatible, read-only format. This converter resolves temperatures to 0.25°C, allows readings as high as +1800°C and as low as -270°C, and exhibits thermocouple accuracy of ±2°C for temperatures ranging from -200°C to +700°C for K-type thermocouples.

Source : MAXIM Integrated(bit.ly/2i3GvZ4)

 

 

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Fedora 25 on Raspberry Pi | Let’s check it out

October 26th, 2016 No comments

Finally Fedora 25 beta version is out with the support for Raspberry Pi 2/3. Why not to give it a try ? In this video let’s check it out how it works.

Fedora /fᵻˈdɒr.ə/ (formerly Fedora Core) is an operating system based on the Linux kernel, developed by the community-supported Fedora Project and sponsored by Red Hat. Fedora contains software distributed under a free and open-source license and aims to be on the leading edge of such technologies. As of February 2016, Fedora has an estimated 1.2 million users, including Linus Torvalds, creator of the Linux kernel.

Source: WikiPedia(http://bit.ly/2dEUAFB)
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Links:

Release : bit.ly/2eq3dIa

OS Images : bit.ly/2dEHHQy

Win32 Sidk Imager: bit.ly/2faTtml
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Access Raspberry Pi on Smartphone using VNC | RealVNC

October 15th, 2016 No comments

RealVNC: Remotely accessing Raspberry Pi Graphical Interface using smart phone. For this I have used VNC. In computing, Virtual Network Computing (VNC) is a graphical desktop sharing system that uses the Remote Frame Buffer protocol (RFB) to remotely control another computer. It transmits the keyboard and mouse events from one computer to another, relaying the graphical screen updates back in the other direction, over a network.VNC is platform-independent – there are clients and servers for many GUI-based operating systems and for Java. Multiple clients may connect to a VNC server at the same time. Popular uses for this technology include remote technical support and accessing files on one’s work computer from one’s home computer, or vice versa.VNC was originally developed at the Olivetti & Oracle Research Lab in Cambridge, United Kingdom. The original VNC source code and many modern derivatives are open source under the GNU General Public License.There are a number of variants of VNC[2] which offer their own particular functionality; e.g., some optimised for Microsoft Windows, or offering file transfer (not part of VNC proper), etc. Many are compatible (without their added features) with VNC proper in the sense that a viewer of one flavour can connect with a server of another; others are based on VNC code but not compatible with standard VNC.

Source: WikiPedia(bit.ly/2efyASt)


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Links :
Instructions for Pi : bit.ly/2e8IR3h
Real VNC : bit.ly/2dRlCx2
VNC Viewer Windows: bit.ly/2dRmemy
VNC Viewer App (Android): bit.ly/2dihwu2
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Connecting ESP8266 with Raspberry PI

October 7th, 2016 No comments

                                    Connecting the ESP8266 Wi-Fi module to Raspberry Pi.The ESP8266 is a low-cost Wi-Fi chip with full TCP/IP stack and microcontroller capability produced by Shanghai-based Chinese manufacturer, Espressif Systems. The chip first came to the attention of western makers in August 2014 with the ESP-01 module, made by a third-party manufacturer, AI-Thinker. This small module allows microcontrollers to connect to a Wi-Fi network and make simple TCP/IP connections using Hayes-style commands. However, at the time there was almost no English-language documentation on the chip and the commands it accepted.The very low price and the fact that there were very few external components on the module which suggests that it could eventually be very inexpensive in volume, attracted many hackers to explore the module, chip, and the software on it, as well as to translate the Chinese documentation.

The ESP8285 is an ESP8266 with 1 MB of built-in flash, allowing for single-chip devices capable of connecting to Wi-Fi.

Source : WikiPedia (bit.ly/2cORmj0)
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Links :
Sparkfun AT Guide : bit.ly/2cEzSbv
Schematic : bit.ly/2dOBnS2
Py App : bit.ly/2dVHANy
Buy ESP8266 : amzn.to/2cZfUv8
Getting started with ESP8266 | AT Commands : bit.ly/2dBMjEq

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Raspbian Jessie | PIXEL | SEP-2016 Release | Explore

October 2nd, 2016 No comments

Raspbian is a free operating system based on Debian optimized for the Raspberry Pi hardware. An operating system is the set of basic programs and utilities that make your Raspberry Pi run. However, Raspbian provides more than a pure OS: it comes with over 35,000 packages, pre-compiled software bundled in a nice format for easy installation on your Raspberry Pi.

The initial build of over 35,000 Raspbian packages, optimized for best performance on the Raspberry Pi, was completed in June of 2012. However, Raspbian is still under active development with an emphasis on improving the stability and performance of as many Debian packages as possible.

Source : Raspbian (bit.ly/2dA3PIb)

 


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Links :
Download : bit.ly/2d4CGfK

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Raspberry Pi 3 as BLE Beacon

September 21st, 2016 No comments

               Bluetooth beacons are hardware transmitters – a class of Bluetooth low energy (LE) devices that broadcast their identifier to nearby portable electronic devices. The technology enables smartphones, tablets and other devices to perform actions when in close proximity to a beacon. The first commercial implementation of bluetooth beacons was by an Australian company called DKTOB (trading as Daelibs), who leveraged Bluetooth for indoor proximity sensing in its Seeknfind location attendance solution. Daelibs designed and manufactured a bluetooth beacon for use in shopping centres based on the Bluegiga chipset. In 2012 Daelibs filed its Bluetooth beacon patent. Bluetooth beacons uses Bluetooth low energy proximity sensing to transmit a universally unique identifier picked up by a compatible app or operating system. The identifier and several bytes sent with it can be used to determine the device’s physical location,[4] track customers, or trigger a location-based action on the device such as a check-in on social media or a push notification. One application is distributing messages at a specific Point of Interest, for example a store, a bus stop, a room or a more specific location like a piece of furniture or a vending machine. This is similar to previously used geopush technology based on GPS, but with a much reduced impact on battery life and much extended precision.

Another application is an indoor positioning system,which helps smartphones determine their approximate location or context. With the help of a Bluetooth beacon, a smartphone’s software can approximately find its relative location to a Bluetooth Beacon in a store. Brick and mortar retail stores use the beacons for mobile commerce, offering customers special deals through mobile marketing,[8] and can enable mobile payments through point of sale systems.Bluetooth beacons differs from some other location-based technologies as the broadcasting device (beacon) is only a 1-way transmitter to the receiving smartphone or receiving device, and necessitates a specific app installed on the device to interact with the beacons. This ensures that only the installed app (not the Bluetooth beacon transmitter) can track users, potentially against their will, as they passively walk around the transmitters. Bluetooth beacon transmitters come in a variety of form factors, including small coin cell devices, USB sticks, and generic Bluetooth 4.0 capable USB dongles.

Source: WikiPedia (bit.ly/2dvLZKn)

You can use your Raspberry Pi laying around as BLE Beacon.
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Links:
Beacon URL Calculator : goo.gl/QVaguX
About BLE :goo.gl/KpAmlF

Raspberry Pi 3 : goo.gl/Oa8KKu
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