A Farsighted look at Iron Man suits, VR and tech worth investing in (Farsighted Podcast, Ep. 7)

The Farsighted crew is joined by Adam Draper, founder of Boost VC, which invests in startups working on a real hoverboard and other technology straight out of science fiction.

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These far-out animals fascinate and amuse scientists

The animal kingdom lets loose with some its strangest creations, from a bizarre underwater orb to a very long-lived albatross.

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Using raspberry pi without a monitor

Setting up raspberry pi without monitor.

Raspberry pi is a low cost, credit card sized micro-controller cum computer, though slightly slower than the modern desktop and laptops, the raspberry pi works pretty good given it’s size.

This micro-controller cum PC was released with the intention of using it for educational purposes, to introduce children to programming. The flexibility and low pricing made it an instant hit amongst tinkerers, makers, and electronics enthusiasts for projects that require more than a basic micro-controller (such as Arduino).

Raspberry pi credit card sized
Fits in one’s palms

The Raspberry pi can be used like any other standard PC by connecting it to the computer peripherals like Keyboard, Mouse and Display(Monitor/TV via HDMI).

What if you don’t have a spare display or need to use RPi in embedded projects, for such scenarios the raspbian for RPi rolls out with pre-installed SSH and VNC server. Those who are unfamiliar with these terms SSH stands for Secure SHell and VNC for Virtual Network Computing. These services need to be manually turned on and requires a monitor for the initial setup.

Before heading any further, you’ll need to:-

i) Set up raspbian on raspberry pi. Follow this article for setting up raspberry pi.
ii) Connect the raspberry pi to your home network.

Steps to set up a headless raspberry pi

1) Turning on the SSH and VNC servers

  • Login to your RPi using your username and password. The default username and password are pi and raspberry respectively.
  • Start the terminal by hitting Crtl+T
  • Type in sudo raspi-config. This will open up the RPi configuration dialog.
  • Navigate to the SSH and VNC section, hit enter select enable or disable to enable/disable the SSH and VNC server.
    NOTE: SSH and VNC are different tabs and need to be enabled separately.
  • Restart!

2) Using SSH Server

  • Login to your raspberry pi
  • Start the terminal by hitting Crtl+T
  • In the terminal type the following line ssh [email protected]
    (By default it is [email protected])
  • If this doesn’t work then, you must find out the local IP assigned by your router
    (Follow the guidelines provided by your router to get the list of connected devices)
  • Once you successfully find out your IP address then, you will be prompted to enter your password. The default password is – raspberry.
    To reset your password you will need to access your raspberry pi using a monitor and type in the following command in the terminal – passwd pi
  • Follow these steps and you will be connected to your raspberry pi using the terminal
  • Additionally, you can set up X-forwarding to allow the use of graphical applications. You can do that by adding a -Y flag in the command ssh -Y pi@<IP>

3) Using a VNC Server

VNC, or “Virtual Network Computing”, is a connection system that allows you to use your keyboard and mouse to interact with a graphical desktop environment on a remote server.
VNC makes managing a remote server easier for users who are not yet comfortable with working with the command line.

To connect to your Raspberry pi using VNC you will need to:-

  • Install a VNC Client a.k.a VNC Viewer of your choice. I used RealVNC – which supports multiple OS and even browsers.
    (You need to follow the procedures for the Operating System of your choice)

    RealVNC provides VNC Viewer for multiple OS and even browsers
  • On your Raspberry pi (using a terminal window or via SSH) get the private IP address of your RPi by typing in ifconfig
  • Enter your Raspberry Pi’s private IP address into VNC Viewer:
    Enter the Private IP into the field

    Click on connect, if this doesn’t work. You have either:
    i) Not enabled VNC server
    OR
    ii) VNC server is listening to another port, in such cases you will need to find out the port at which VNC server is listening

  • Authenticate the VNC Server by entering in the Username and password of your Raspberry pi. Default:piandraspberry
  • To start serving remote desktop through VNC type in the following command in your terminal or via SSH vncserver. It will print out the IP and the port details of the server.
  • Enter this information into the VNC Viewer and you are good to go…

A remote connection is very useful when you are using the Raspberry pi in an embedded project or when you don’t have a display to spare..

Learn how to setup a Raspberry pi for the first time – Setting up a Raspberry pi.

Use the comment section below to let us know your suggestions and/or any queries regarding the topic.

The post Using raspberry pi without a monitor appeared first on Learn2Create.

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Setting up a Raspberry pi

How to setup a raspberry pi.

Raspberry Pi is a small, $35 computer that fits in the palm of your hand. It can run a array of low-powered operating system. The Raspberry pi can do all that your Desktop could 5 years down the line. It was launched by Raspberry pi foundation; aimed to teach programming to children all over the world. The RPi has 40 GPIO pins, it is a perfect blend of Micro-controller and a micro-computer. These things made it an instant hit amongst creators, educators, tinkerers and electronics and tech enthusiasts.

There are different models and versions of Raspberry Pi each built specifically for some purpose. The one that we are using is Raspberry Pi 3 Model B, which has a HDMI port, four USB ports, one ethernet port, WI-FI and Bluetooth.

Raspbian the official Operating system of Raspberry Pi. This is the recommended system for beginners and we stick to it for this tutorial.

    What will you be needing?

  • A Raspberry pi 3
  • A Display – Preferably with HDMI port else you would need to buy a converter
    (HDMI to VGA/HDMI to DVI)
  • A USB Keyboard and Mouse
  • A Minimum 8GB SD Card and a Card reader – I recommend buying a minimum 16GB one
  • A Power Supply – Basically a charger. 5v 2.5amps is what Raspberry pi’s official Doc suggests.
    We are using a 5v 2.4amps one

    The setup

  • First you will need to get hold of NOOBS. Download link
  • NOOBS stands for New Out Of Box. NOOBS is a installer that handles the installation part for you.
    It has a few OS Stacks included – We will go with Raspbian
  • Format the SD card
  • Once done, extract the ZIP content into your SD Card. All the necessary files will be transferred
  • When this process finishes, safely eject the SD card and insert into the Raspberry pi

    Setting up the Raspberry Pi

  • After Inserting the SD Card connect the USB keyboard and Mouse, and Ethernet Cable (optional)
  • Now connect the power supply (a micro USB charger)
  • Your Raspberry pi will boot and show you a list of operating system you can select. Select Raspbian from the option and click on install
  • Now sit back and relax as Raspbian
  • Once the installation process is done the Configuration menu for Raspbian will load up.
  • Here you can change the setting to match your locale, keyboard, enable SSH or VNC and lot other stuff.
    But you can always do that later by typing in sudo raspi-configin your terminal
  • Once you are done, you can use the Tab key on the keyboard to navigate to the Finish
  • You will be prompted for the username and password. The Default: pi&raspberry
  • You are done installing Rapbian…

To learn how to set up SSH & VNC, and to use raspberry pi without monitor (headless) check out this post – Using Raspberry pi without Monitor.

Use the comment section below to let us know your suggestions and/or any queries regarding the topic.

The post Setting up a Raspberry pi appeared first on Learn2Create.

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‘Class’ takes ‘Doctor Who’ back to school with extracurricular aliens

The edgy spin-off features a smouldering teen cast and splashes of gore among the snarky gags and a Capaldi cameo.

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This cat is as mesmerized by optical illusions as you are

A famous optical illusion doesn’t stand a chance against the hunting instincts of a bored housecat.

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