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Tag Archives: Programming

Taking a Leap into Quantum – Hello World with Q#

28 Wednesday Mar 2018

Posted by Max Hemingway in Programming, Quantum

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Programming, Quantum

Quantum.jpg

Back in December 2017, Microsoft announced a Quantum Development kit which uses Q # (Q Sharp) as its language. It is designed to be used with Visual Studio 2017.  Recently I decided to install the development kit and have a go at the usual “Hello World” example.

The development kit is explained as being capable of developing Quantum code using a Quantum Simulator on your device.

“The development kit contains the tools you’ll need to build your own quantum computing programs and experiments. Assuming some experience with Microsoft Visual Studio or Visual Studio Code, beginners can write their first quantum program, and experienced researchers can quickly and efficiently develop new quantum algorithms”

Source: Microsoft

Overall I found the tutorial well laid out, with lots of good explanations and shows how some functions are equivalent to others in C, C#, Java. If you are used to C#, then Q# will be immediately familiar as it uses semicolons and braces to indicate program structure.

With this demonstration the “Hello World” is in the form of qubit, so the output on the screen is in Zero and One. the example also takes you through changing the program to create Superposition and Entanglement.

We’ll start with the simplest program possible and build it up to demonstrate quantum superposition and quantum entanglement. We will start with a qubit in a basis state |0⟩
, perform some operations on it and then measure the result.

Output:

Init:Zero 0s=1000 1s=0
Init:One 0s=0 1s=1000

Creating Superposition

Output:

Init:Zero 0s=484 1s=516
Init:One 0s=522 1s=478

Creating Entanglement

Output:

Init:Zero 0s=499 1s=501 agree=1000
Init:One 0s=490 1s=510 agree=1000

Source: Q# Worked Example

Q#

A good introduction and first steps into programming Quantum Computing.

Resources

  • https://www.microsoft.com/en-us/quantum/development-kit
  • Microsoft Quantum GitHub
  • A-Z of Digital – Q is for Quantum Computing

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A-Z of Digital – P is for Programming

24 Thursday Aug 2017

Posted by Max Hemingway in Digital, Programming

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Tags

Digital, Programming

code2Following on from my blog post outlining an A-Z of Digital, here is “P is for Programming”.

Programming or Coding is something that everyone should learn (How you can begin to code), even if its just to produce a simple programme to print  “Hello World” to the screen.

Why? Because programming/coding is becoming an integral part of businesses moving towards its Digital Transformation. Having an understanding of code or being able to write it, helps understand whats behind as code services, automation and connecting systems together with API’s. The manual tasks of today should be the Automated tasks of tomorrow.

The phrase “Learning to code” may strike fear and thoughts of hundreds of lines text and numbers, but it doesn’t need to. The ability to learn to code has grown with the availability of free resources, books and videos available on the internet that takes you through from a beginner upwards.

Choosing a language will depend on what you are looking to achieve, but if your starting out try Scratch (https://scratch.mit.edu/) as its based around blocks to create a programme. Alternatively there are lots of languages to try and below is a list of the current top 10 languages compiled by RedMonk.

Top 10 Programming Languages from RedMonk (June 2017)

1 JavaScript
2 Java
3 Python
4 PHP
5 C#
6 C++
7 CSS
8 Ruby
9 C
10 Objective-C

Source: http://redmonk.com/sogrady/2017/06/08/language-rankings-6-17/

What language will you try?

Further Reading:

  • A-Z of Digital – A is for Automation
  • How you can begin to Code
  • Taking your coding to the next level – Scratch to Python
  • Programming Nostalgia – Back to the 1980’s
  • Learning to Program

 

 

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Do It Yourself – AI Assistants

26 Friday May 2017

Posted by Max Hemingway in IoT, Programming, Raspberry Pi, Tools

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IoT, Open Source, Programming, RaspberryPI, Tools

CyborgThe options available to consume voice activated assistants are increasing with recent releases within the market.

The availability of pre-built off the shelf Assistants is growing and so is the ability to build your own using the open sourced versions.

Google recently gave away AIY (Do It Yourself Artificial Intelligence) a maker kit, with Voice Hat and components to work with a Raspberry PI on the front of the Raspberry PI Magazine issue 57 – (MagPI) inline with the release of the https://aiyprojects.withgoogle.com/

The demand for this kit was very high and as a result unfortunately there are none left and not much information at the moment of the kit becoming available for sale. There is a waiting list available and it will probably be released depending upon demand.

This aside whilst we await the release of the sale kit for AIY, you can still take advantage of the AIY capabilities and a Raspberry Pi 3 in a similar way to installing Amazon Alexa onto the PI.

  • Google AIY Build
  • Raspberry Pi 3
  • Generic Aux Speaker
  • USB Microphone

You could go one better by running both Alexa and Google AIY on the same Raspberry PI, using a build from xtools called AssistantPi.

AssistantPi is basically a tweak of AlexaPi. It includes the Google Assistant SDK and uses AlexaPi’s hotword recognition to activate either Assistant or Alexa. The installer provides an easy way to get everything set up in just under an hour.

https://www.hackster.io/xtools/assistantpi-74b772

A great project to try out and learn from, giving you the power of both Alexa and Google.

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Attending GitHub Satellite 2017

23 Tuesday May 2017

Posted by Max Hemingway in Development, Open Source, Programming, Raspberry Pi, STEM, Tools

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Tags

Coding, Development, Open Source, Programming, RaspberryPI, STEM, Tools

Yesterday I attended GitHub Satellite 2017 in LondonGithub

https://github.com/blog/2313-join-us-for-github-satellite-2017-may-22-23-in-london-uk

The event was well attended and there was a good buzz around the conference. GitHub Marketplace was launched at the conference and some of the initial vendors in the Marketplace demonstrated how their applications can be used in the lifecycle of coding. You could watch demos and chat to the companies at their vendor stalls to gain further information.

Below are my notes from the conference and Key Note opening speeches

Opening

The opening lead by Chris Wanstrath (Co-Founder & CEO, GitHub) and Kyle Daigle (Senior Engineering Manager, GitHub)

  • GitHub has 21 Million Developers
  • 59 Million Projects using the platform.
  • Expanding into gaming with Githib for Unity
  • Extentions for Visual Studio

ATOM

  • Help guide the approach with ATOM
  • 2.1 million active users of ATOM

Electron

  • GitHub desktop GUI new version based on electron. Open Source to allow it to be developed by community.
  • Electron platform for building desktop apps. Runs cross platforms.
  • Companies using electron to build internal apps.
  • Seeing big fortune 500 companies using electron for web, mobile and desktop apps.

GitHub as a platorm

  • Now 9 years old.
  • Today more API traffic than UI traffic
  • 5+ million users use integration
  • OAuth growing doubling each year
  • API ‘s have not been developed and remained static….. 9 years old.

World moving to a new world of API’s. Moving on from SOAP to REST to what’s next.What is the future of API’s:

GraphQL

  • Build queries on data you need.
    • Powering new features of GitHub
    • Suggested reviewers
    • Projects
    • Topics
  • 125 million GraphSQL internal queries a day.
  • GraphQL is open source.

GitHub Apps

  • Fine grain permissions
  • Choose how you want to give access to repositories
  • Using bots in Integrations

GitHub Marketplace (Launching today)

  • Find tools that meet your workflows best.
  • Pricing plans in marketplace
  • Marketplace has option to join and apply to be part of Marketplace.

Build and Grow Sessions

There were a number of sessions held in either the Build or Grow track which attendees could join.

I went to sessions in both tracks including the session on Building Interconnected Workflows which featured companies in the newly launched Market Place. Heard from these companies on how their products could be used in conjunction for a full code project lifecycle, which was interesting and good to hear.

Vitor Monteiro, GitHub
Andrew Homeyer, Waffle.io
Danielle Tomlinson, CircleCI
Jaime Jorge, Codacy
Cory Virok, Rollbar

There was a good session on Women in IT from Amy Dickens from the University of Nottingham which also covered topics of diversity and how workplaces and attitudes can change to make a difference.

Closing Session

The closing session was run by Marc Scott from the Raspberry PI Foundation who gave an overview of the Foundation, what it does and how the community can help review projects and sumbit projects for others to practice, learn from and enjoy. Also helping by joining local coding groups to pass on knowledge.

Sessions were streamed and Im hoping that replays are availble to catch up with the sessions I couldnt get to.

Unfortunately I could not get to todays workshop sessions but again hoping for streams of these following the event.

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Accepting automation – Do we need safeguards?

09 Tuesday May 2017

Posted by Max Hemingway in Automation, Open Source, Productivity, Programming, Security, Tools

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Automation, Productivity, Programming, Security, Tools

CogsThere are many and apps available to help us automate basic tasks on our mobiles and computing devices. When choosing these tools, we often read reviews and then download the app, run and set up, then let it run its tasks accepting that it will carry out our requirements. But what happens when there is an issue.

I have a simple IFTTT (If This Then That) recipe running on my mobile phone that sends a test message when I leave an area set up in google maps using Geolocation and GPS to look at my location. A standard recipe for IFTTT.

Today whilst sitting at my desk the recipe triggered saying I had left the area, however I am sat in the middle of my geolocation fence which extends for about 1 mile around to allow some local area travel. The net result is the person who got the message thought I was on my way home, when in fact I was still at work.

Solution to my problem:

The issue with this recipe was caused by the Android operating system and the phone type causing some wonkiness with the location. I fixed this by ensuring all the packages are up to date, rebooting and using another app called GPS Status to assist with ensuring my GPS is working correctly and has the right the location. Also ensuring that the GPS is set to high dependency. The downside may be the drain on the battery with the extra services – I will monitor this going forward.

The main thing this points out is how we accept and then use an app/tool and expect it to work, but not consider the what ifs, such as what if the app triggers incorrectly. Should I have set any safeguards in the recipe or built a counter app.

No harm done in this case as it triggered a text message, but what if this had done something different such as put the heating on, turned on a kettle, opened the garage door, turned something else off? This could be reversed using another recipe to turn things off if I’m within the geolocation fence.

So, what can you do to ensure that your apps/tools and related apps/tools are reliable:

Research – review and research your app. Have there been any issues with running something similar.

Secure – Think about the security of the app and what you can do to protect yourself.

Update, Update, Update – keep the OS, Apps and related apps up to date. In this instance, Android, IFTTT, Google Maps.

Plan – for the what ifs. Allow a reverse control if needed such as turn off the kettle, close the garage, turn on the alarm.

Experiment – Dont be afraid to experiment to get the automation you require.

Safeguards – Think about any Safeguards you may need to build in such as a counter app.

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Taking your coding to the next level – Scratch to Python

15 Saturday Apr 2017

Posted by Max Hemingway in Programming, STEM

≈ 2 Comments

Tags

Programming, STEM

code2Following on from my last blog post “How you can begin to Code“, by now you should have been getting to grips with a good level of basic coding using games to help you learn to code.

So where do you go from here? Most of the initial links I listed used a scratch type of game to help you learn, but how can you transition over to another language such as Python.

At a STEM event I met up with the author of a programme called “edublocks” and got chatting to their team. I was impressed by this application and its capabilities that allow you to move from Scratch to Python easily using a block method similar to scratch.  This helps with the Python Syntax by presenting it as a set of drag and drop blocks.

edublocks can be found at edublocks.org and allaboutcode.co.uk

This makes the transition from Scratch to Python easier to understand and opens up the opportunity to start coding in Python quicker than using the standard Python language. This is achieved by dragging blocks from the Toolbar to the workspace to create the code. You can look at the code behind the blocks to see what the real Python code is and then run the code to see the project you have created.

You can follow the latest developments on the edublocks/allaboutcode twitter feeds:

  • https://twitter.com/all_about_code
  • https://twitter.com/edu_blocks

If you want to continue to learn using the gaming method then CodeCombat will present you with a next set of challenges, coding you way through various levels of dungeons using Python, JavaScript, CoffeeScript or Lua (Game Scripting Language). Choosing a hero and coding them through various scenarios and engaging with several monsters on the way.

Learning to code doesn’t have to be entirely game based. You can work through various online courses and videos that also have the benefit of forums an tutor help. Coursera run several courses from basic Python to using Python for Data Science:

https://www.coursera.org/courses?languages=en&query=python

The main thing to remember is that your not alone in trying to learn a language. There are lots of great places for help and reference available. If your stuck then there is always your favorite search engine. Entering in an error code or syntax question, should point you to an answer through the online manuals, or someone having that issue or requirement before.

One good source of information to book mark is “Stack Overflow” which is a site where programmers ask questions and help each other out. It contains a great search engine, so always remember to search a question before you ask one.

Keep practicing and coding. Set yourself simple challenges to code and then move to more complex challenges. The more you code, the more you learn.

 

 

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Building a Quadruped

07 Friday Apr 2017

Posted by Max Hemingway in Arduino, Open Source, Programming, Robotics, STEM

≈ 4 Comments

Tags

Arduino, learning, Open Source, Programming, Robot, Robotics, STEM

Robot3I decided to have a go at building a robot for a STEM session last weekend, to show the power of code and how it can be used to control something.  A moving robot is a great visualisation to demonstrate this.

After some searching I settled on a quadruped shown on thingverse (a 3d printing site). This is a build based on a robot called Chopstick Junior by Lumi.

Parts being printed, I set about thinking about the controls and motors. The parts are compatible with an SG90 servo. I needed 8 of these, for the knee and hip joints of the quadruped.

The assembly of the parts was a bit of a challenge as in the instructions it said you needed 3mm x 6mm screw/nuts to connect the shoulders together. You really need 3mm x 8mm screw/nuts as I have to countersink the holes a bit more to get the nuts to attach to the 6mm screw length.

Inserting the servos into the holes in the hips and legs required the unscrewing of the 4 small screws in each servo and temporarily removing the gear top. Once inserted this can be replaced and screwed down.

Once the servos were in place I centered the servos the best I could to allow backwards and forwards movement in each joint. I knew that later adjustment may be needed! This can easily be achieved removing the servo arm and hip/leg, then re-positioning and attaching the arm again.

The power is provided by 4 x AA batteries in a square battery holder. This was glued down onto the frame and fitted well into the build.

The power bus is provided by a small piece of circuit board. I used two lines for -v and +v. Each servo was then wired into the lines and the control wire to an Arduino Nano which is used as the brains of the robot.

The following pins were used on the Digital I/O on the Arduino Nano:

  • D2 – Hip 1
  • D3 – Knee1
  • D4 – Hip 2
  • D5 – Knee 2
  • D6 – Hip 3
  • D7 – Knee 3
  • D8 – Hip 4
  • D9 – Knee 4

I also wired in a sensor on the front of the robot to D10 and D11.

Wiring is grouped together to allow movement, but cut to a length that reduces excess that could get in the way of the legs.

A toggle switch provides an on/off for the power fixed to the rear of the robot. Remember to break the lines on the circuit board so it does not join any of the lines.

Once assembled I then got round to coding. I decided to use the opensource code for the Chopstick Junior as a base and make alterations. The quadruped responded well to the code and several physical servo adjustments were needed. Its now in a reasonable state, however balance is an issue in terms of walking steadily, so need to work more on this.  I have not yet coded movement to respond to the sensors yet, this will be done later.

The code is available via my Github:  https://github.com/Cloudmage/Robots

The robot went down well at the STEM session. Now to tweek that code……

Top view

Robot2

Side View

Robot3

Front View

Robot1

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How you can begin to Code

06 Thursday Apr 2017

Posted by Max Hemingway in Programming, STEM, Tools

≈ 6 Comments

Tags

Coding, learning, Programming, STEM

code1With all the recent STEM activities I have been involved with and blogged about, I have been asked to write some posts around how someone can start learning to code.

The school curriculum covers an element of coding with some subjects and pupils may be lucky to get a BBC Micro:bit or Raspberry Pi, however you don’t have to wait until school before learning any coding.

You don’t have to be young to start coding either. Using the same methods and tools anyone can learn to code.

The phrase “Learning to code” may strike fear and thoughts of hundreds of lines text and numbers, but it doesn’t need to. There are lots of websites available to help people start to code and present a fresh way of learning to code.

So where to start…….. If your reading this blog then you have access to a computing device. All you need to get started is a computing device with a web browser and access to the internet.

At this stage, its not worth getting hung up on the choices of the many different languages out there such as Python, Java, C etc, but concentrating on some fundamentals of coding.

Depending if you like Minecraft, Star Wars, Dr Who or Frozen, you can learn basic commands through gaming and interaction. These games teach you some basics of coding and commands by getting you to move a character on a screen to complete a number of tasks. Each of the games work in a similar way, using someones favorite characters to help them learn. These also help keep focus and attention.

The first code that you will learn is through blocks.

Minecraft – https://code.org/minecraft

Dr Who – http://www.bbc.co.uk/cbbc/games/doctor-who-game

Frozen – https://studio.code.org/s/frozen/stage/1/puzzle/1

Star Wars – https://code.org/starwars

Moana – http://partners.disney.com/hour-of-code

Once you have completed the tasks in blocks, you could then also try using a different language with some of the games such as Java if you wish. Its a great way of experiencing some of the differences in the languages.

 

 

The main program behind blocks is Scratch. To see more on the block programming method have a look at Scratch itself.

https://scratch.mit.edu/

At the scratch site there are learning tools and lessons to help you learn as well as access to the full programming language. The Scratch site also hosts a lot of other peoples programs which you can run/play and look at how they have constructed their code.

Scratch is a free visual programming language developed by the MIT(Massachusetts Institute of Technology) Media Lab.[1] Scratch is used by students, scholars, teachers,and parents to easily create animations, games, etc. It provides a stepping stone to the more advanced world of computer programming. It can also be used for a range of educational and entertainment constructionist purposes from math and science projects, including simulations and visualizations of experiments, recording lectures with animated presentations, to social sciences animated stories, and interactive art and music.[2] Viewing the existing projects available on the Scratch website, or modifying and testing any modification without saving it requires no online registration.

Source:https://en.wikipedia.org/wiki/Scratch_(programming_language)

Scratch allows users to use event-driven programming with multiple active objects called sprites.[1] Sprites can be drawn, as vector or bitmap graphics, from scratch in a simple editor that is part of Scratch, or can be imported from external sources, including webcams.

Source:https://en.wikipedia.org/wiki/Scratch_(programming_language)

All you need now is to dedicate some time each week to learn to code.

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Site Reliability Engineering by Google

03 Friday Feb 2017

Posted by Max Hemingway in Digital, Productivity, Programming, Tools

≈ Leave a comment

Tags

Coding, Digital, Productivity, Programming

learnHaving read this book previously its good to see that it is now available from Google on-line for reading/reference. The book itself is a collection of articles and essays on how Google run and maintain their computing systems by their Site Reliability Engineers.

The book can be accessed at  https://landing.google.com/sre/book/

List of the Table of Contents showing the articles and essays in the book.

Table of Contents
Foreword
Preface
Part I – Introduction
Chapter 1 – Introduction
Chapter 2 – The Production Environment at Google, from the Viewpoint of an SRE
Part II – Principles
Chapter 3 – Embracing Risk
Chapter 4 – Service Level Objectives
Chapter 5 – Eliminating Toil
Chapter 6 – Monitoring Distributed Systems
Chapter 7 – The Evolution of Automation at Google
Chapter 8 – Release Engineering
Chapter 9 – Simplicity
Part III – Practices
Chapter 10 – Practical Alerting
Chapter 11 – Being On-Call
Chapter 12 – Effective Troubleshooting
Chapter 13 – Emergency Response
Chapter 14 – Managing Incidents
Chapter 15 – Postmortem Culture: Learning from Failure
Chapter 16 – Tracking Outages
Chapter 17 – Testing for Reliability
Chapter 18 – Software Engineering in SRE
Chapter 19 – Load Balancing at the Frontend
Chapter 20 – Load Balancing in the Datacenter
Chapter 21 – Handling Overload
Chapter 22 – Addressing Cascading Failures
Chapter 23 – Managing Critical State: Distributed Consensus for Reliability
Chapter 24 – Distributed Periodic Scheduling with Cron
Chapter 25 – Data Processing Pipelines
Chapter 26 – Data Integrity: What You Read Is What You Wrote
Chapter 27 – Reliable Product Launches at Scale
Part IV – Management
Chapter 28 – Accelerating SREs to On-Call and Beyond
Chapter 29 – Dealing with Interrupts
Chapter 30 – Embedding an SRE to Recover from Operational Overload
Chapter 31 – Communication and Collaboration in SRE
Chapter 32 – The Evolving SRE Engagement Model
Part V – Conclusions
Chapter 33 – Lessons Learned from Other Industries
Chapter 34 – Conclusion
Appendix A – Availability Table
Appendix B – A Collection of Best Practices for Production Services
Appendix C – Example Incident State Document
Appendix D – Example Postmortem
Appendix E – Launch Coordination Checklist
Appendix F – Bibliography

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Tiny computing – VoCore2

06 Sunday Nov 2016

Posted by Max Hemingway in Development, IoT, Open Source, Programming

≈ Leave a comment

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Development, IoT, Open Source, Programming

split1.pngSearching round on the crowdfunding sites for things that are coming, I found the VoCore2 on iniegogo.

https://www.indiegogo.com/projects/vocore2-4-coin-sized-linux-computer-with-wifi#/

VoCore has already had an v1 early release and is now heading for a v2 release in January 2017. The cost of this board is $4, although as you start to add the additional boards the cost can go up to around $50.

VoCore2 is a open source linux computer and a full functional wireless router but its size is smaller than a coin. It can perform as a VPN gateway to secure your network, an airplay station to play loseless music, a private cloud to store your photo, video and code. Benefit for its small size and low power consume, it can be easily mounted in wall, help you boost wireless signal in every room or setup house based mesh network.

What I do like about this design is that its small and compact and can be used for a lot of different purposes:

  • VPN Router
  • IoT/Appliance Control
  • Music Player/Streaming
  • Wifi

Its ability to be added to an existing ethernet socket and add heaps of functionality to the socket and its open source makes this device interesting for me, as well as its ability to then act as a wifi extender from that socket.

I would like to look at what could be done with it to provide additional IoT Security to a device plugged in/connected to a network utilising this board. So looks like another board on the wish list to have a go on.

Pin Outs for the board:

vocore

Source/Pics: https://www.indiegogo.com/projects/vocore2-4-coin-sized-linux-computer-with-wifi#/

 

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