sunnuntai 23. lokakuuta 2016

Microsoft Wireless Display Adapter - share your screen wirelessly in Windows 10

*Finally* there is a wireless connection based on Miracast technology between my Windows 10 laptop and Samsung HD TV. The screen of my laptop can be shared and seen on TV - without any wires.

If your hardware meets these requirements you can try it as well:

  • A laptop with certain drivers compatible with Miracast technology (circuits and drivers must be Intel-based? All drivers were pre-installed in my case)
  • Microsoft Wireless Display Adapter (I purchased one from local flea market)
  • An HD TV

So what did I do to make the above combination work? Nothing much.

  • First Microsoft Wireless Display Adapter was attached in TV (seems to work out of the box, see pictures below)
  • Next the right HDMI source was chosen from remote control
  • Finally the laptop was connected with TV by clicking Notification Center in Windows 10 (lower right corner, see picture below), Connect and WiFivideo

Microsoft Wireless Display Adapter

Microsoft Wireless Display
Adapter attached

WiFivideo (texts in Finnish only)

Click Notification center in lower right corner, next Connect

Microsoft Wireless Display Adapter is named as WiFivideo

You may also expand your display if you like

Wireless connection of screens
between Windows 10 and Samsung HDTV

torstai 13. lokakuuta 2016

Ubuntu Linux 16.10 is out! Download your flavour of Ubuntu Linux 16.10 now!

Ubuntu Linux 16.10 is out! So why not download your flavour of Ubuntu; Gnome, Kubuntu, Lubuntu, Xubuntu or Mate! The choice is yours!

Take a look at the download links here:

sunnuntai 9. lokakuuta 2016

Flashing an aftermarket ROM gives your phone extra lifetime

What is an aftermarket ROM?

When you purchase an Android phone operating system is there, pre-installed. After year or two new versions of Android are unveiled. You start to think if your phone will receive a new version of Android. Usually one bigger update can be expected.

Since the source code of Android is available for free and can be reached by anyone there are many developer groups offering their own derivative versions of Android. These, so called aftermarket ROMs are invaluable for those not receiving Android updates. Your phone might have many extra years ahead.

For example my Nexus 4, first introduced in November 2012, is no longer supported by Google. That is, Android 6 and 7 never happened to Nexus 4. I'm supposed to stick to Android 5 or try to find an aftermarket ROM based on Android 6 or 7 source code.

Is there an aftermarket ROM for my phone?

Bummer. Not all phones are supported! However if you happen to own a Nexus phone chances are there are several ROMs available. You can start digging CyanogenMod site. See if your phone model is among the supported ones. If you don't like CyanogenMod (supported by Microsoft) move on to OmniROM or XDA-Developers, just to name some. Remember, the older phone the worse chances.

Ok, a ROM found - how do I flash it?

This is a sticky one. First you need to get your PC ready for flashing by installing adb and fastboot. Next, your existing Android needs to be unlocked and debugging has to be enabled. If you are familiar with Windows or Linux setup chances are you'll learn how to flash your phone as well. Take a look at these instructions from Cyanogen Mod; how flash Nexus 4.

Bear in mind mobile devices are somewhat different from PCs. When flashing for the first time a lot of coffee and patience is needed. One more thing: do not flash a phone you need every day. If you fail you are holding a brick in your hand.

Is it worth it?

Ok, flashing takes time, it is dangerous and might make your phone useless. Is it worth it? Absolutely! My Nexus 4 is from year 2012 and is still able to run the latest Android 7 which is not officially available but can be found with the name CyanogenMod 14. One might say my phone's new OS runs slow and lags. This may happen if there is not enough RAM memory available. However Nexus 4 is powerful enough to run the latest Android.


There are new phones like Google Pixel available. Those new devices are very tempting but expensive. If you happen to own a flashable phone why not give it a facelift and flash it. That way your phone will get extra years of living and there is no need to purcase a new phone that often.

Nexus 4 running an unofficial
CyanogenMod 14 (aka Android 7)

torstai 29. syyskuuta 2016

Raspbian with Pixel Desktop now available for Raspberry Pi

The latest Raspbian (September 2016) has a new Desktop called Pixel. You can download the image of the OS here: . Write the image on a microSD card the same way as before.

So, what's new? The graphics is flattened making everything look 2D - not a bad thing. Epiphany web browser is making room for Chromium and uBlock Origin adblocker. Take a look at more detailed list of all the new features here:  .

torstai 22. syyskuuta 2016

How to make a bootable macOS Sierra setup usb stick

Who needs a bootable setup usb stick with an operating system inside these days? Well, maybe you do :) ! macOS Sierra is the latest OS from Apple. If you own an older Mac and want to run Sierra then a bootable setup usb stick might suit you needs. Read on and remember: you try the following at your own risk!

When preparing macOS Sierra usb stick you can choose between a GUI and CLI (Command Line Interface). It's up to you which one you choose.

First off, open App Store and download macOS Sierra. It's free. When download has completed DON'T run the installer. That would install macOS Sierra on your HD or SSD. It's the usb setup stick we are after. Close the Installer window.

Next, download and run MacDaddy's Install Disk Creator. Find an 8 GB usb stick and place it in your Mac. Click Select the OS X installer. Then navigate to folder /Applications and find Install macOS Click Create Installer and type in root's password. When done eject the usb stick and place in in your Mac again. Edit: I had to use Disk Tool to erase the data on usb stick (Mac OS Extended (Journaled) -formatted). Ok, that was the GUI part of the story. Let's move on!
CLI is always there. GUIs may come and go. CLI (Command Line Interface) stays (the same!). Now that you already have macOS Sierra downloaded you don't need to do it anymore. Off you go and type in (or Copy/Paste) the command below. Where? Open Terminal. Copy/Paste. Type in root's password. That's it!

One more thing. You need to know the name of your usb stick. In the example below the name is Untitled. And make sure your usb stick is formatted the Mac way (Mac OS Extended (Journaled) -formatted). And eject/place usb stick to make it work.

sudo /Applications/Install\ macOS\ --volume /Volumes/Untitled --applicationpath /Applications/Install\ macOS\ --nointeraction

tiistai 20. syyskuuta 2016

macOS Sierra is out! And it runs on these Macs!

macOS Sierra is out and available in App Store for free! Check if your Mac is listed below and among supported devices.
  • MacBook (Late 2009 and later)
  • MacBook Air (2010 and later)
  • MacBook Pro (2010 and later)
  • Mac mini (2010 and later)
  • iMac (Late 2009 and later)
  • Mac Pro (2010 and later)
macOS Sierra is out! Get it while it's hot!

perjantai 9. syyskuuta 2016

A quick test of mind map app (running on a web browser)

Online mind map app (at offers three outputs; an HTML outline and JPG/PNG-images. You can see the results below. The first picture is JPG, then PNG and lastly the HTML outline.

New Mind Map
SBC (Single Board Computer)
Arduino Uno (microcontroller)
Raspberry Pi
created with

tiistai 2. elokuuta 2016

Windows 10 Anniversary Update ISOs available for fresh install - follow these steps

Microsoft Windows 10 is one year old - many happy returns! The Anniversary Update adds new features and repairs many bugs. If you want to make a fresh install here's how to do it:
  • There is no sign of Anniversary Update until you start saving the ISO. Number 1607 hints to Anniversary Update.
Downloading ISO on Ubuntu
  •  That's it! (edit: on Ubuntu Chrome wouldn't open Microsoft's pages. I had to use Firefox instead.)
    • Edit 2: Some say Anniversary Update deletes Linux partitions without warning! In case using multiboot be very cautious!

lauantai 16. heinäkuuta 2016

Pokémon Go officially available in Finland

No more waiting! Get Pokémon Go while it's hot! Available now in Finland (Android and iOS)!

torstai 14. heinäkuuta 2016

Pokémon Go - how to install it on an Android phone

Pokémon Go is a mobile game which forces player to go outside and take a walk around. In order to catch Pokémons one has to wander miles and miles. Not bad idea at all!

Pokémon Go is available for Android and iOS in the US, New Zealand and Australia (at the moment). However it's possible to install an APK-package on Android. Read on.

Download Pokémon GO APK-package with your Android phone here: . If in doubt, wait until Pokémon Go is officially released in your country and grab it via Google's Play Store.

Allow Unknown Sources in Settings -> Security. After that tap the APK-package in order to install it.

That's it! Time to play!

One more thing! You need a proper 4G connection if you want to play Pokémon Go. In addition make sure GPS in on. When all is set, off you go!

Edit: watch out! Backdoored version of Pokémon Go APK-package found!

sunnuntai 15. toukokuuta 2016

Smart phone as a PC - choose between MaruOS, Ubuntu Touch and Windows 10 Mobile

Smart phone as a PC?

Nowadays smart phones are powerful enough to act as PCs. Talking of the specs; RAM memory varies between 2-4 GB. ARM processors are able to run many apps at the same time. Screen resolutions are up to HD level.

What alternatives are there around when you want to turn your smart phone into a PC? At least the following three. Read on to find out which suits you best.


MaruOS is in early stage yet mature. Only Nexus 5 smart phone is supported at the moment. When Nexus 5 is attached to a Full HD HDMI-monitor via slimport adapter  a genuine Debian Linux shows up on screen. Not bad! You can run your favourite Linux apps like LibreOffice or Scratch. In fact you can install any app found in the repositories! Phone itself runs a derivative of Android.

If you want to get MaruOS visit their web site to get the invitation. In addition you need to know how to flash your Nexus 5. That's been made easy. There are comprehensive instructions around and even a script which takes care of the flashing. IMHO MaruOS is the best thing to happen to smart phone industry!

Ubuntu Touch

Ubuntu Touch has a bit different approach compared to MaruOS. Canonical Ltd is developing a system called Convergence which means you have the same UI (i.e. Unity 8) on your Desktop, tablet and smart phone. In addition all apps are universal and should work on any of the devices.

At the moment you can even order a Ubuntu Touch based phone if you like. If feeling brave get a used Nexus 4 and flash it. it's a inexpensive way to become familiar with Ubuntu Touch and Convergence.

Windows 10 Mobile

Microsoft Continuum is very much like Convergence from Canonical Ltd. You can purchase a bundle with either Lumia 950 or 950 XL smart phone and a special hub which let's you run Microsoft 10 Mobile on an HDMI-screen. Bear in mind you can't run x86-based apps on Continuum. So called Universal apps are supported only. For example Office is not the same you are used on your Desktop but a touch screen version instead. Universal apps can be run on Desktop, tablet and phone - even though using different processor architecture.

Which one suits you?

That's up to you! I tried all three of them and they have their pros and cons. I'm happy it's finally possible to attach phone to a monitor and run familiar apps. MaruOS is my favourite since it lets me run Debian on a big screen. I never thought anyone would make it possible!

Will "phone-as-a-PC" take over?

That's the headache of other people than me! When thinking of Apple... they will never introduce something like Continuum or Convergence. Why not? Because that would eat their own business. Apple wants to sell hardware, not let you stick to one device only.

Let's hope for the best. At the moment I'm very satisfied there are many paltforms to choose from.

Running MaruOS on Nexus5

lauantai 14. toukokuuta 2016

The latest Raspbian got new features

Raspbian is IMHO the best distribution for Raspberry Pi. The latest version is packaged with some new features. Let's take a look what Raspbian has to offer.

There is a button for Bluetooth in the upper right corner. When clicking it you can pair for example keyboard and mouse. No additional USB Bluetooth dongle is needed if using Raspberry Pi 3.

You can copy microSD cards with an external SD card reader. There is now a handy tool called SD Card Copier available in Raspbian. Look at the picture below.

When programming a proper editor is a must. Geany is there waiting for you and your code. Take a look at the manual if in need.

Bluetooth has an icon of it's own

MicroSD cards can be cloned with
an external card reader

Geany is an editor for programmers

perjantai 13. toukokuuta 2016

Create a web survey with Excel Online in no time

Would you like to create a web survey form of your own in just minutes and start to collect answers and opinions in an Excel sheet right after that? It's possible with Excel Online. Here's how you do it:
  • Open Excel Online.
  • Login with your Microsoft account (I guess Hotmail, Live, all do).
  • Start a new Workbook.
  • Look for Survey. Start a new Survey.
  • Type in the first question and it's answers (see picture below). There are different answers types to choose from (for example yes/no etc.)
  • After all Q&A click Save and Show at the bottom.
  • Edit Survey until ready. If Ok, click Share Survey.
  • Click Create a link.
  • Click link and Control + C which copies link to Windows Clipboard. You can shorten link if you like. Use services like TinyURL or
  • Send link to your students and keep Excel Online open. You will see your sheet populated online!

Screenshot in Finnish only, sorry.

Type in questions and answers.

lauantai 7. toukokuuta 2016

Write image for Rasperry Pi on a microSD card with your phone - no PC needed!

With Raspi Imager it's possible to write an image for Raspberry Pi on a microSD card. No PC is needed anymore! Here is a list of what you'll need:

  • Android phone
  • OTG (OnTheGo) cable
  • SD card reader
  • Internet access

At the moment Raspi Imager supports Noobs, PINN Lite and BerryBoot only. Make sure to choose the right storage. Do not write on a microSD card inside phone! In addition find out how much free space you have before downloading an entire image (1,1 GB). Happy writing!

No PC needed anymore for this task!

User Interface od Raspi Imager 
is easy to understand

perjantai 6. toukokuuta 2016

Google Slides - ask presenter a question in real time

Whether you are a presenter of a slide show or in the audience it's possible to interact in real time - with Google Slides!

People with their mobile devices can take part in your presentation as soon as you allow them to interact with you! Look at the screen shots below. All texts are in Finnish but never mind. You'll be in touch with your audience in no time!

Look for the new features in upper right corner

People can ask questions when they
move to an appearing web address

This is how you see the questions on PC

The audience can join
the conversation with
their mobile devices

keskiviikko 4. toukokuuta 2016

Opera browser for developers - with built-in ad block

Opera browser is back with built-in ad block (in developer version only). Does it work? Well, at least both ads (there are only two of them) on my site were stripped off. Look at the pics below.

If you don't want to mess around with different ad block add-ons download Opera developer version. In addition, Opera promises to load web pages quicker than other browsers do.

Click Menu, Settings and you'll find option for ad block

Opera for developers - no ad

Chrome - with an ad

maanantai 25. huhtikuuta 2016

Turn your RaspberryPi 3 into a Bluetooth Beacon

You can do it!

Raspberry Pi 3 has built-in Wifi and Bluetooth. With a few lines of commands anyone can turn Raspi 3 into a beacon which broadcasts URL of one's choice via Bluetooth. It's not that tricky at all! Read on!

Eddystone by Google

There are different techniques what comes to beacons. You can choose at least between Apple and Google. What we are going to try is called Eddystone brought by Google. And hey, even Apple's devices (with Chrome installed) are able to hear these kind of beacons.

Raspi 3 has it all ready for you

With Raspberry Pi 3 built-in Bluetooth 4 LE (Low Energy) and Raspbian Linux your beacon will be up and running in no time! So go and get you gear and burn OS on a microSD-card. Next, the actual setup of a beacon.

Setting up a beacon

Type in the following commands using Terminal app.

Become superuser:

sudo su

Enable Bluetooth in Raspberry Pi 3:

hciconfig hci0 up

Let Bluetooth advertise and make it not-connectable:

hciconfig hci0 leadv 3

Set up an advertisement which Raspi3 will broadcast (in my case the URL is

hcitool -i hci0 cmd 0x08 0x0008 18 02 01 06 03 03 aa fe 10 16 aa fe 10 00 00 65 64 75 70 6f 6c 69 2e 66 69 00 00 00 00 00 00 00

Don't copy the code above but visit Eddystone URL command calculator and create advertisement of your own.

That's it! Your beacon is now up and running! Next: how to receive the URL which Raspi 3 is broadcasting?

Physical Web


Make sure Bluetooth and Location are on. Find them in Settings. Download Physical Web app from Play Store and install it: . Launch Physical Web app and let it search for beacons.


Please visit the following URL and follow the instructions in video to turn Physical Web on:

If you can't reach your beacon read through these instructions how to setup your phone/tablet:

Download Physical Web app
from Play Store

Fire up the app and let it
look for beacons

There you have it!

iPhone 4S can hear a beacon
in the neighbourhood

perjantai 22. huhtikuuta 2016

Testing ChromiumOS 0.5 for RaspberryPi 2

A new version of ChromiumOS for RaspberryPi 2 is available. The number of this version is 0.5. Download link is here: . RaspberryPi 3 version is coming later.

I decided to give new version a go. In my opinion ChromiumOS 0.5 for RaspberryPi 2 is very fast and stable. Of course one has to remember RaspberryPi only has 1 GB of RAM. When running two browser windows ~ 0.65 GB of RAM is in use. However ChromiumOS's only app is Chromium browser! Once it's up and running all memory is given to browser!

There are things to bear in mind:
  • Are you using a FullHD (1920*1080) monitor with an HDMI-port? Try another monitor in case no picture show up.
  • Did you write the image on microSD card properly? Learn how to use dd command in Linux. Not sure which app to use in Windows or Mac.
  • And last but not least! Happened to me! Remove all apps from your Chrome/Chromium browser. I had tons of apps installed aside Chrome. Also get rid of extensions you don't need.
    • Apps remove: find magnifier (lower left corner) and click it, right click on top of an app and remove
    • Extensions remove: button with three stripes (upper right corner), extensions, garbage bin
I must admit I've tested ChromiumOS for RaspberryPi 2 only two hours now. So far so good! It does what it promises: quick boot, stable browser only OS, ready to shoot at any moment - something we expect when using a Chromebook - now happening on RaspberryPi 2!

torstai 21. huhtikuuta 2016

Want to give Unity 8 a try on Ubuntu 16.04? It's easy!

Today April 21st 2016 Canonical Ltd released Ubuntu 16.04 LTS - a version with 5 year support time! Read my earlier post to download your copy of the  latest Ubuntu.

Ok, once Ubuntu 16.04 is up and running it's possible to try Unity 8 which is still in try-out phase. As a matter of fact Unity 8 runs on Ubuntu 14.0.4 as well. Ok, give me that Unity 8! Try this (AT YOUR OWN RISK!):

Install Unity8:

sudo apt-get update
sudo apt-get install unity8-desktop-session-mir

Log out. In login select a little Ubuntu logo, then Unity8-Mir and type in your password. What's supposed to happen after setup of Unity 8? Well, be happy that your PC and Ubuntu still work! Remember, it's still a try-out!

How does it look like? Watch out! After the traditional Desktop one might get confused. It's... different. Let's hope they (Canonical Ltd) will go all the way to the end and we will see Unity 8 in action in the next Ubuntu 16.10!

Tap that Ubuntu logo

Choose Unity8-Mir

Choose Phablet

There is not that much ready just yet

Ubuntu 16.04 LTS has arrived! Download here!

Ubuntu 16.04 LTS stands for Long Term Support which means there is five year support time available. So get your copy of Ubuntu 16.04 LTS while it's hot:
or via torrent:

Downloading Ubuntu 16.04 64- and 32-bit versions
via torrent network with Transmission app