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The wearable device which turns gestures into music

A glove which allows you to compose music with gestures has been created by a start-up based in Austin, Texas.

The wearable device works on any firm surface and in the air, turning whatever you touch into an instrument.

BBC Click's Nick Kwek spoke with Remidi's CEO, Andrea Baldereschi, to find out more.

More at BBC.com/Click and @BBCClick.

RASPBERRY PI 2 MODEL B

The Raspberry Pi 2 Model B is the second generation Raspberry Pi. It replaced the original Raspberry Pi 1 Model B+ in February 2015. Compared to the Raspberry Pi 1 it has:

• A 900MHz quad-core ARM Cortex-A7 CPU
• 1GB RAM

Like the (Pi 1) Model B+, it also has:

• 4 USB ports
• 40 GPIO pins
• Full HDMI port
• Ethernet port
• Combined 3.5mm audio jack and composite video
• Camera interface (CSI)
• Display interface (DSI)
• Micro SD card slot
• VideoCore IV 3D graphics core

Because it has an ARMv7 processor, it can run the full range of ARM GNU/Linux distributions, including Snappy Ubuntu Core, as well as Microsoft Windows 10 (see the blog for more information).

The Raspberry Pi 2 has an identical form factor to the previous (Pi 1) Model B+ and has complete compatibility with Raspberry Pi 1.

We recommend the Raspberry Pi 2 Model B for use in schools: it offers more flexibility for learners than the leaner (Pi 1) Model A+, which is more useful for embedded projects and projects which require very low power.

How to Install Zimbra 8.6 on Ubuntu 14.04 Server

The Zimbra Collaboration Server is a mail server, collaborative web application and a web based mail server admin console in a single application. It provides LDAP, antivirus, antispam, collaboration features and a ajax webmail client. Zimbra is easy to use for administrators as well as end users due to its fast Ajax based web interface.

Prerequisites

• Ubuntu Server 14.04 - 64bit
• root privileges
• Free space 25 GB
• RAM 4 GB

My zimbra Server profile used in this tutorial:

Domain : sendaljepit.local
IP     : 192.168.1.101
Mail   : mail.sendaljepit.local

What we will do in this tutorial:

• Install the prerequisite packages
• Configure hostname and DNS Server
• Download and Install Zimbra
• Test the installation

Installation of prerequisites

Step 1 - connect to your server, get root privileges and install this package.

apt-get install libgmp10 libperl5.18 unzip pax sysstat sqlite3 dnsmasq wget

Configure hostname and DNS Server

In this tutorial will use the 'dnsmasq' resolving nameserver to speedup DNS lookups in Zimbra. Dnsmask has been installed as prerequisite in the first chapter, so we just have to configure it now:

Step 1 - Edit hostname and hosts

vim /etc/hostname

change your hostname with this 'mail.sendaljepit.local'.

vim /etc/hosts

add this line:

192.168.1.101   mail.sendaljepit.local  mail

Step 2 - Edit dnsmasq configuration

vim /etc/dnsmasq.conf

server=192.168.1.101
domain=sendaljepit.local
mx-host=sendaljepit.local, mail.sendaljepit.local, 5
mx-host=mail.sendaljepit.local, mail.sendaljepit.local, 5
listen-address=127.0.0.1

Step 3 - Reboot

sudo reboot

Installing Zimbra

Step 1 - Download Zimbra and extract it

wget https://files.zimbra.com/downloads/8.6.0_GA/zcs-8.6.0_GA_1153.UBUNTU14_64.20141215151116.tgz
tar -xvf zcs-8.6.0_GA_1153.UBUNTU14_64.20141215151116.tgz
cd zcs*

Step 2 - Run the Installer

./install.sh

At this step, zimbra will check the required packages and will ask you to agree to their installation.

and then choose the zimbra package :

here doesn`t need zimbra-dnscache, because in this tutorial use dnsmasq.

You need to wait, because this installation takes some time.

next step is configure "zimbra-store" for getting admin password. See the picture:

Choose number "4" and enter. and then type your password:

Apply all Configuration:

and wait for Zimbra configuration finished.

Testing Zimbra

to test your zimbra server is running, you can type a command :

su - zimbra
zmcontrol status

try to access zimbra from web browser.  https://192.168.1.101/

Dell PowerEdge R330

Chassis: 1U rack

CPU: 3GHz Xeon E3-1220 v5
Memory: 32GB 2,133MHz 1.2V DDR4 (max 64GB)
Storage: 2 x 2TB Dell 7.2K NL-SAS SFF hard disks (max 8)
RAID: Dell PERC H330
Array support: Array support: RAID0, 1, 10, 5, 50
Network: 2 x Gigabit Ethernet
Expansion: 2 x PCI-Express 3.0 slots (with optional riser)
Power: 350W hot-plug PSU (max 2)
Management: Dell iDRAC8 Express
Warranty: 1 year basic Next Business Day

PowerEdge R730

   General

• Packaged Quantity
  1
• Product Form Factor
  Rack-mountable - 2U
• Server Scalability
  2-way
• Hot-Swap Bays Qty
  8
• Manufacturer
  Dell, Inc.

   Processor / Chipset

• CPU
  Intel Xeon E5-2680v3 / 2.5 GHz
• Max Turbo Speed
  3.3 GHz
• Number of Cores
  12-core
• Chipset Type
  Intel C610
• Processor Main Features
  Hyper-Threading Technology, Intel Turbo Boost Technology 2
• Processor Socket
  LGA2011-v3 Socket

    Cache Memory

• Installed Size
  L3 cache - 30 MB
• Cache Per Processor
  30 MB

    Memory

• Max Supported Size
  384 GB
• Form Factor
  DIMM 288-pin
• Slots Qty
  24
• Empty Slots
  23

   Storage

• RAID Level
  RAID 0, RAID 1, RAID 10, RAID 5, RAID 50
• Interface Type
  Serial Attached SCSI 2
• Type
  none

    RAM

• Memory Speed
  2133 MHz
• Memory Specification Compliance
  PC4-17000
• Features
  dual rank, registered
• Configuration Features
  1 x 16 GB
• RAM Supported
  PC4-17000 - 384 GB - registered - ECC
  PC4-17000 - 768 GB - Load-Reduced - ECC

    Environmental Parameters

• Humidity Range Operating
  10 - 80% (non-condensing)

    Hard Drive

• Capacity
  1 x 300 GB
• Interface Type
  SAS 6Gb/s
• Spindle Speed
  10000 rpm

    Storage Controller

• Interface Type
  Serial Attached SCSI 3
• Storage Controller Name
  Dell PERC H730P
• Buffer Size
  2 GB

    Processor

• Installed Qty
  1
• Max Supported Qty
  2
• Upgradability
  upgradable

    Monitor

• Monitor Type
  None.

    Networking

• Data Link Protocol
  Ethernet, Fast Ethernet, Gigabit Ethernet
• Form Factor
  integrated
• Ethernet Controller(s)
  Broadcom BCM5720
• Remote Management Controller
  Integrated Dell Remote Access Controller 8 Enterprise (iDRAC8)

    Miscellaneous

• Included Accessories
  ReadyRails sliding rails, cable management arm

    Graphics Controller

• Form Factor
  integrated
• Graphics Processor
  Matrox G200eR2
• Video Memory
  16 MB
• Video Interfaces
  VGA

    Dimensions & Weight

• Width
  19 in
• Depth
  29.8 in
• Height
  3.4 in

    Manufacturer Warranty

• Type
  3 years warranty

    Printer

• Type
  none

    Expansion / Connectivity

• Bays
  8 (total) / 7 (free) x hot-swap 2.5"
• Slots
  2 (total) / 1 (free) x CPU
  24 (total) / 23 (free) x DIMM 288-pin
  3 PCIe 3.0 x16 - low-profile ( x8 mode )
  2 PCIe 3.0 x16 - full-length, full-height
  1 PCIe 3.0 x16 - full-length, full-height ( x8 mode )
• Interfaces
  2 x USB 3.0
  2 x VGA ( 1 front, 1 rear )
  1 x USB 2.0
  1 x serial
  4 x LAN (Gigabit Ethernet)

    Physical Characteristics

• Form Factor
  rack-mountable
• Weight
  45.86 lbs

    Power

• Type
  power supply - hot-plug
• Power Redundancy
  optional
• Power Redundancy Scheme
  1+1
• Installed Qty
  1
• Max Supported Qty
  2
• Min Operating Temperature
  50 °F
• Max Operating Temperature
  95 °F

    Operating System / Software

• OS Provided: Type
  no operating system
• OS Provided
  No operating system

    General

• Manufacturer
  Dell, Inc.