Unity Signing Error on BlackBerry 10

This is a quick FYI troubleshooting tip!

If you compile your BAR file using Unity 3d for BlackBerry 10, you may find the following error occurs when you attempt to upload it or transfer it to your device using Chrome:

Install CircleTap2.5 – Pro.bar: failure 881 required signatures missing (RDK, AUTHOR)

The technical explanation above is that it wasn’t signed as a Release Bar.  This could mean you signed it only with a debug token, or it could mean that the signing failed completely.  To check this you need to review your Unity Console Log.

When you look at the Unity console log, you may see this error:

Certificate chain not found for: -.  – must reference a valid KeyStore key entry containing a private key and corresponding public key certificate chain.

When you encounter this issue, there are several possible causes.  For me, everyone I’ve spoken to seems to have the first issue…

  • Make sure when you are using File > Build Settings > Build that you have no unusual non-English characters in the BAR name.
  • Absolutely make sure there are no spaces in your BAR output filename.
  • Check that File > Build Settings > Player Settings, are configured properly to use your signing tokens.
  • If the issue still persists, you may need to test Cascades or another IDE to see if it is a problem across all programs with your signing key.






Building an Arduino Tweet Box


After recently getting an Arduino Yun from Newark Canada, I decided to put together a fun build video for IoT fans out there!  This video will show you how to build your own Arduino Tweet Box using an Adruino Yun and an EMIC2.  For fun, I decided to add a 2 line LCD as well (for folks who don’t have an EMIC2 or found it to be too pricy).

What will it do?  Well, we are going to use an Arduino Yun to access Wi-Fi, this way we can bring the box anywhere we want to go.  We are going to leverage the Temboo service – which means we can add RSS feeds, Facebook, and so on (although in this article I will only cover Twitter).  And we will set it up to read your tweets out load and to check for tweets every 60 seconds!

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2 Ways to Win Some Free Stuff!


With myself focusing more on Arduino and Raspberry Pi articles – I wanted to share two great contests I’ve come across that are being run right now.

Connectedly a Month of Pi Contest

One is being run by yours truly, and gives you 4 chances to win a Raspberry Pi from Newark. Just drop a comment on this article on Connectedly, and your automatically entered to win!  Why not? :)

Newark Automation Ace

This one is a bit more hands-on, but your fate is in your own hands.  Newark is running a fun little multiple choice question game for electrical engineering minded folks!  This one has some bigger prizes, including a Milwaukee and Ideal Tool Set bundle, Xcelite 86-Piece service Technician Tool Set with Roller Bearing Case, Bose Wireless Speaker, 3 mystery prizes, and even 300 pairs of safety glasses!  Who doesn’t like free stuff?  You can play the game here! (637)


Arduino: Getting Started with Buttons!


Using Buttons and Switches with an Arduino

Welcome to the fourth instalment of the working with Arduino series! So far we have covered everything from blinky lights, to calculating resistors, to working with graphic displays!

The majority of these have been output based components (what you see). In this article, we will cover input based sensors. The information here can be scaled up for almost all input devices used on an Arduino.

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Building an Arduino Temperature Sensor with an LCD Display–Part 2


In a previous article, I discussed how to create a Nokia 5110 LCD Display with a TMP36 sensor.  Today I will cover this in more detail, with a bit more detail around the how!


In this article, I’m just going to list the parts I used.

  • Mini breadboard – $3 China | $4 Sparkfun / Newark
  • Nokia 5110 – $3 China | $10 Sparkfun / Newark
  • Arduino Uno – $10 China | $30 Sparkfun / Newark ***
  • TMP36 – 5$ China | $1.50 Sparkfun / Newark
  • Potentiometer – $1.10 China | $1 Sparkfun / Newark
  • 4 x 10kΩ resistor – cheap
  • 1 x 330Ω resister – cheap
  • 1 x 1kΩ resistor – cheap

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RetroRogue for BlackBerry 10 – Well Worth 99 cents


I just want to say, I gave this game a try, and absolutely love it.  Its a rogue-like, which I’ve been waiting forever for on BlackBerry 10.  Which is a fancy way of saying once you die – your DEAD.  No magical life number two.  You start all over.  This game is for the hardcore for sure.

There have been a few really fun little RPG games for BlackBerry 10 that I love, such as The Depths and this one.

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Arduino – Working with RGB LEDs

This short tutorial will show you how to get started using multicoloured LED’s with Arduino.  Specifically common anode and common cathode and to control the red, blue and green separately.  This means multicoloured blinky lights!  And later, you will be able to see a sample of how to control this with Wi-Fi.

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