Not too long ago I reviewed the Banana Pi R1, and even before that I reviewed the Banana Pi original. These boards keep coming out and they keep getting better. The new M2 is not out yet at the time of writing this but the Banana Pi website lists it as coming soon. There are a lot of interesting new features which may make you reconsider this as opposed to another device for one of your projects.
I have used a lot of laptops, and I have used a lot of tablets but the Acer Switch 10 is something different. The Switch is both a laptop and a tablet. It is a tablet when you want to play games and it is a laptop when you need to get some work done. The Acer Switch has a detachable keyboard which is sturdy when attached but easy to remove.
Virtual reality is difficult to describe to people who have not actually tried it. It is not quite like you are sitting at your desk with a box on your head (google cardboard), it is more like you have actually traveled to the virtual place. If a simulation is good enough, it can feel like you are really there. This is amplified if you are actually sitting or standing like the character in the simulation and if you are wearing a good headset to cancel the noise.
The hardware is a lot better this time around. The resolution is now 960 X 1080 per eye, which is noticeable. There is an additional position tracking unit which tracks the Oculus Rift, and your device’s orientation.
Precise, low-latency positional tracking opens the door to entirely new interactive and gameplay opportunities. Great positional tracking is a key requirement for virtual reality; with it, the Oculus Rift can accurately map all of your real world head movements.
The DK2 uses low persistence OLED Displays. This basically eliminated the motion blur and jutter of the display, which is what makes you feel sick most of the time.
DK2 uses a low persistence OLED display to eliminate motion blur and judder, two of the biggest contributors to simulator sickness. Low persistence makes the scene appear visually stable, increasing the potential for presence.
Over all the DK2 has a lot better hardware. The specs below will outline what is on board of the headset.
|Resolution||960 x 1080 per eye|
|Refresh Rate||75 Hz, 72 Hz, 60 Hz|
|Persistence||2 ms, 3 ms, full|
|Viewing Optics||100° Field of View (nominal)|
|USB Device||USB 2.0|
|USB Host||USB 2.0 (requires DC Power Adapter)|
|Positional Tracker USB||USB 2.0|
|Sensors||Gyroscope, Accelerometer, Magnetometer|
|Update Rate||1000 Hz|
|Sensors||Near Infrared CMOS Sensor|
|Update Rate||60 Hz|
|Weight||0.97 lbs (without cable)|
|Included Accessories||HDMI to DVI Adapter DC Power Adapter International Power Plugs Nearsighted lens cups Lens cleaning cloth|
Software wise there is a lot to choose from experiment wise. Immediately I downloaded a tour of the solar system. This blew my mind away. One of my biggest dreams (not surprisingly) is to go to space one day. The experience was great, and it really sold me on virtual reality. On the Oculus Share site, there are loads of software experiments to download for Mac, Windows, and Linux.
There is also a plugin for the Unity game engine to develop games for the Oculus Rift. The SDK allows you to easily build games and simulations for the rift.
The Oculus Rift is paired with the publicly available Oculus SDK which includes source code, documentation, and samples to help you hit the ground running. The Oculus Rift and the Oculus SDK currently support Windows, Mac OS X, and Linux.
Over all developing for the rift is easier than you would expect, if you have a little game dev knowledge to begin with.
The device isn’t terrible to set up. There are a lot more cords than you would expect. The device I tried it out first on was my laptop at work, a 2013 Mac Book Pro. Setting up the Oculus on the Mac wasn’t terrible but it was difficult to get the displays configured correctly.
If you are going to use the Oculus Rift, the best configuration I have found so far is to just mirror your display, I found that sending my display to the rift as a secondary display just caused a bunch of issues including rotating the display. After all was said and done, it was super easy to download and try out different experiments.
Overall the device is great. The setup was a little frustrating. On Windows it was admittedly a lot easier to set up than Mac, which is fine because my work laptop isn’t really for gaming anyways haha. It is going to be interesting to see what kind of technologies are released for this in the near future. It is also going to be interesting to see what Samsung does with their Gear VR, based on the Oculus Rift.
Here are some fun pictures of us using it at the office.
Not too long ago a good friend of mine, Alex Trauzzi came to me with a book he had received for Winnipeg’s PHP user group which I have attended from time to time. This book was the PHP cookbook by David Skalr & Adam Trachtenberg. The book is a beginner’s guide to PHP. It includes Solutions & examples for learning PHP programming. Some of the learning outcomes of the book include learning basic data types (ie: Strings, Numbers, Arrays, and dates / times), programming building blocks, and web programming. It is basically what you would expect learning PHP and makes for a great new user reference guide.
One way that this book stands out from others like it is the quality of the code samples in the book. The authors are not trying to intimidate new users like many do in their manuals but instead write clean, easy to read, and to the point code which illustrates their point.
The learning outcomes of the book include:
The book also covers designing robust, secure applications, encryption, and working with libraries. The book accomplishes all these learning outcomes in an efficient manor and does not stay from the topic being covered. A lot of the content in this book is essential to becomming a developer proficient in PHP developing APIs, web applications, or even just simple websites.
The book is written by 2 knowledgable PHP developers.
David Sklar is an an independent technology consultant. In addition to writing previous additions of PHP Cookbook, he is also the author of learning PHP 5 and Essential PHP Tools.
Adam Trachtenberg is the directory of the LinkedIn Developer Network. He’s the author of Upgrading to PHP 5 and the previous versions of the PHP Cookbook.
I recommend this book. If you are in Winnipeg, keep your eyes on the PHP user group if you are hungry for more knowledge. A few more PHP books for your convenience:
PHP is one of the most versatile and widely used web languages out there. You can use it to do some really impressive tasks and although some people are against it, there is no aruging that it is really popular as a language. This book will give you the foundations for working with frameworks like Laravel.
The Nexus Player is Google’s first Android TV device, it is a device that is like a large hockey puck. It is surprisingly small but very exciting when you actually play with it. There was a slight delay getting the devices out because of a lack of game pads, which is one of the best ways to use the player. The Nexus Player is Chromecast enabled but if you don’t have your device handy to stream to it you can launch an app directly from it.
Not too long ago the Raspberry Pi B+ was released to an unsuspecting community, now the little brother the A+ has been announced. This is a smaller and cheaper alternative to the B+ or even the original A Pi. The board is nearly identical to the B+ with the exception of a few milimeters which have been removed because of the network controller being removed, and of course the network port. The USB controller is also inside the Broadcom processor which means we have 1 USB to save on cost. The price of the unit is about $20 depending on where you live.
The BananaPi R1 has been released and I have just received mine. It doesn’t feel like too long ago that I reviewed the Banana Pi and talked about how much better of a machine it is. Since then I have picked up 4 more BPIs and now I have my R1. The R1 is an open source router that has a BPI built in. The router features a 4 port switch and wifi. Of course you will need to make your own case (perhaps 3D printed?) and it comes as just a single PCB.
Kickstarter has no shortage of 3D printers, there is a new one claiming to change the world of 3D printing every other week. The iBox Nano is exceptionally interesting though. Aside from it’s terrible name (I hate when people put i in front of the name) it seems to be a really interesting printer. Instead of using spools of APS or PLA plastic this printer actually uses resin. Because of this it can take up a lot less space and being built off a Raspberry Pi keeps it open and hackable.
I am not only a huge fan of Arduino, but if you have ever visited this site before you will know I am a big fan of 3D printing as well. When I heard that Arduino was developing it’s own sub $1000 3D printer that is modular, open, and available as a kit I was pretty excited. The Materia 101 is designed for beginners, makers, and enthusiasts alike which means that it could end up as the standard for many hobbyists.
I am an avid Chromebook user. I have been using mine for about a year now, it is a great little device that serves several uses for our house. It is my daughter’s primary computer, she plays games and reading exercises on it. My Girlfriend uses the Chromebook for general purpose web browsing and I use it to stream to my Chromecast. The Chromebook is one of the most used computers in my house, so when Google announced at Google I/O this year that they were toying around with the idea of bringing Android apps to Chrome OS I lost my mind.