Arduino Clones and DHT11 temperature/humidity sensor

This is part of the TechEd section. As previously mentioned, to diversify my techie skills (and its fun), I have a little side home DIY project on the go to achieve the following: Create a RS485 network, to allow me to easily connect together multiple Arduino’s over a distributed network. Gateway said RS485 network onto Read more about Arduino Clones and DHT11 temperature/humidity sensor[…]

Software Architect Security – what does defense by depth mean on the cloud?

According to a recent report – security looks to be a top concern among Software Architects. In this article I go into detail on one of the core ways in which you can achieve dependable security in evolving online systems – namely defense by depth. What is defense by depth? Simply put this is where one Read more about Software Architect Security – what does defense by depth mean on the cloud?[…]

software architecture skills, top 5

Software Architect skills, the top 5

Software Architects need a combination of skills to be able to succeed and deliver designs that are long lived and able to provide strong commercial value to a business. Below I list what I consider to be the top 5 skills in order to be a good Software Architect. #1 Able to listen and confirm Read more about Software Architect skills, the top 5[…]

PII Hacking

What is PII Really?

PII (Personally Identifiable Information) broadly speaking is information that relates directly to the individual (you) and allows you to be individually identified, plus it is often of a sensitive private nature. We explain in this article what it is and how to protect yourself against people trying to steal your identity through PII. Why is Read more about What is PII Really?[…]

Systems Architecture & Security, winning at both

Online systems need to be both secure and designed to last, so how can you achieve both and not blow the budget? This article covers a few simple principals you can adopt which are both good for your systems architecture and good for your security. #1 System Components should only do what they say on Read more about Systems Architecture & Security, winning at both[…]

What is a software architect, really?

Software/Enterprise/System/X Architect all seem to be pretty much interchangeable titles these days – the trouble is for most people it’s hard to exactly pin down what a X Architect is and what they are expected to do on a day to day basis. Well you are in luck, this article will shed some light on Read more about What is a software architect, really?[…]

Start-up Incubators in Sydney

Below are a list of Start-Up Incubators that currently operate in Sydney and are principally Australia/Sydney focussed. Note: I have not incubators which are part of a global chain or organisation, these are ‘home grown’ incubators only… BTW if you think I’ve missed someone that should be on this list – let me know. Cicada Read more about Start-up Incubators in Sydney[…]

Why do cloud services fail?

Given the recent outage with AWS and how some bad typing could bring down a large part of the cloud infrastructure of Amazon I thought it might be informative to pull the veil back a bit on how cloud systems work and what are the common failure modes and how to guard against it. A Read more about Why do cloud services fail?[…]

Beware of Salesmen bearing SLA’s

This is in relation to some consulting with a business about whether to use an Off The Shelf (OTS) solution for some auth middleware or not. To OTS or not to OTS – is that the question? Sorry for mangling Shakespeare but when considering an OTS solution, compared to doing something else (like doing in Read more about Beware of Salesmen bearing SLA’s[…]

Moving WordPress sites

Moving a WordPress site to another hosting provider can sometimes not go exactly to plan. Listed below are some common problems that can occur and how to fix them. Blank page.. Did you actually put the website directly ‘in’ the public_html directory and not in a subdirectory? Most cPanel installations serve the main site straight Read more about Moving WordPress sites[…]

Should API’s provide Client Libraries?

This question was recently put to me by an architect at a Sydney based cloud SAAS business I have done Architectural consultancy with, and I thought it would be good to publish my answer, as this impacts quite a lot of businesses and systems architecture decision making all over the place. The question is an Read more about Should API’s provide Client Libraries?[…]

Arduino, RS485, mixed powers and multiple devices

This is part of the TechEd Section. As mentioned previously  you need to be very careful when using multiple sources of power that are coupled by a common rail – nasty things can happen which will ruin your day (as well let all the critical magic smoke out). Luckily for me my power supplies are able Read more about Arduino, RS485, mixed powers and multiple devices[…]

Arduino and multiple power sources – things to watch out for…

This is part of the TechEd section. As I mentioned previously , I had a need to double check that the 5v USB supply from my laptop was floating with respect to my lab power supply. I measured a no load difference on the 0v lines of around 120v – which raised the obvious concern Read more about Arduino and multiple power sources – things to watch out for…[…]

Propel, custom Behaviors, Composer and Git – how to get it all working

After having spent a bit of time trying to work out how to get Propel and Composer to play nicely together, I thought it would be helpful to write up a little aid for those going through similar pains… The end game is to have your custom behaviors ‘live’ in their own Git repo to Read more about Propel, custom Behaviors, Composer and Git – how to get it all working[…]

Arduino Uno clone RS485 network

At home I have a need to measure temperature and control various circuits in response to those temperature changes and other inputs. The sensor network needed to span at least 100m and ideally should have the ability to reach out to 200m (so I could get down to the Chicken Coop and pool). Looking around Read more about Arduino Uno clone RS485 network[…]

The importance of a specification and a budget!

Just had an interesting email exchange with a perspective client who wanted us to work on an unfinished WordPress website abandoned by the previous website developer… It appears that there is no brief or specification document to be found and no idea on budget, yet he was quite willing to have a chat and see Read more about The importance of a specification and a budget![…]