I am an advocate of making sure that every device consumes as little power as possible at all times. Indicator lights should be off, processors should be sleeping as much as possible, and generally the device should just be optimised to use as little power as possible.
I may have to rethink that....at least a little bit.
Dan Lockton has a brilliant blog, Architectures of Control, where he discusses how things are designed to result in a certain action (or lack of action) – or as he calls it, design with intent.
There are two devices in my home which have helped me to reconsider turning off all the lights, my DVD player and my laptop. Each has its own subtle "architecture of control" whether intentional or not.
Our DVD player has (to me) the most irritating standby light that I have ever seen on any device. When on, the light is constantly illuminated, but when in standby the light flashes continuously (at a slow rate). This drives me mad, but results in an interesting action – it causes me to turn it off at the plug when I am not using it (which is most of the time). Suddenly one little flashing light has resulted in more energy saving than having no light.
My laptop has a similar "feature." When it is powered down the battery indicator remains on (green if full, flashing yellow if charging). This used to bother me, and I thought, "Why not just leave the light off when the battery is charged?" My wife's laptop is like that, the battery indicator only flashes if it is charging, once charged it turns off.
That is all good, except my laptop communicates to me that it is plugged in and consuming standby power when it is not in use. When I unplug it from the wall socket, then the battery indicator goes off – I save the standby power of both the power brick and the laptop.
There is one problem with this, it only works on people who care. If I did not care about saving energy, then I would just leave the laptop plugged in and the DVD player on. That means that you have to consider how your users will handle this kind of subtle feedback and determine whether turning the light off, or encouraging unplugging results in more energy savings.
Sometimes the most obvious design decisions may not be the ones which result in the greatest energy saving. Keep designing for low energy consumption and also keep your mind open to new possibilities.
Tuesday, June 10, 2008
Leaving the lights on
Posted by Duncan Drennan at 08:30 8 comments Links to this post
Tags: design, energy, energy efficiency, engineering, solutions
Wednesday, June 04, 2008
Engineer Simplicity....
....helps people turn ideas into products.
Your idea may be a new invention, a faster warehouse picking system, or a testing and debugging tool which makes your company run faster and better.
Bring it to me and together we will turn your idea into a great product.
Posted by Duncan Drennan at 08:42 0 comments Links to this post
Tags: design, electronics, engineer simplicity, solutions
Monday, June 02, 2008
Innovate for a better South Africa: SA Blook Chapter 10
This post forms a part of the SA Blook.
So what is our reality?
South Africa has an unemployment rate of about 23%, a skills shortage crisis, rising inflation, rising interest rates, a large current account deficit and an uncertain political environment – amongst a number of other things.
All of this points towards a great need, and with great need, comes a great crisis...just not the one you are thinking about. The great crisis we have is a crisis of opportunity. Wherever there is need, there is opportunity.
In this midst of this great opportunity the challenge that we face is finding people who are ready to create solutions. We must find and create people who are willing to innovate each day.
We are all innovators and have the ability to contribute to the creation of a better country. Unfortunately we tend to associate "innovation" with technological improvements, while it should really apply to every task that we do. Innovation needs to become a concept which permeates how we do business, and how we go about our jobs each day.
The other problem is that we tend to think of innovation as large leaps forward. Personally I prefer the Japanese concept of Kaizen, which means continuous change for the better (Mind of the Innovator is worth a read). So when I use the word innovate, I mean keep changing things for the better.
On its own, technical advances will only change South Africa a small amount. We need innovation to happen on all fronts – legal, government, business – but most importantly we need it to happen at a people level. We need to find ways to keep changing ourselves for the better, and with that the rest will come easily.
So how do we as businesses and individuals work towards a better South Africa?
- People matter
Our country, and our businesses run on people. The more we place value on each individual, the more value we build for ourselves. It is time to stop thinking about "human resources" and start thinking about people. People matter, and what they care about matters too.
We are connected to the people around us. Acting in the interest of those around us serves not only to build a better country, but also to nurture and secure our own future. - Engage in the discussion
We all need to engage in the discussion that is going on around us and try to contribute positively to it. Talking builds community and that forms the foundation for a better country. It helps us find out what matters to other people, and how we can help.
I have been fortunate enough to be a part of an amazing online business community, The Forum SA, which has brought various business owners and managers together to engage with each other. Together we help each other with the daily challenges of running a business. It also provides a platform for us to work together as a group to improve conditions for small business owners in South Africa. Together we create a better country.
The more we take part, the more we grow. Maybe it is time to grow together. - Be remarkable: make and do things that matter
Jim Collin's wrote, "Good is the enemy of great." Or in Seth Godin's words, be remarkable.
As a whole we have given up our greatness. We have lost our sense of greatness to crime, dirty politicians and corrupt businessmen. Yet as a country we are filled with greatness, even if we are not always able to recognise it.
What and how we do things changes our view of both ourselves and the people around us. Do your actions reflect who you want to become? Do they reflect the country you want to live in? Do they build your (our) greatness, or break it down?
What comes out of us, both in actions and words, reflects not only who we are, but who we are becoming. What steps did you take on the road to greatness today? We need to walk that path – one step at a time. - Do more with less
Right now we can all feel the pressures of inflation. There are two basic ways to combat inflation – consume less, or produce more. If we can do both at the same time it is a double win. Innovation can help us to both increase productivity as well as decrease costs.
As much as technological innovation can help, finding new ways to equip people with skills and increase their productivity can help even more. As we educate people through schools, universities and on–site training we grow our ability to deliver. As we produce and deliver more we push down inflation.
Each of us has the responsibility to help develop another person. Remember, people matter.
The thought that I would like to leave you with is a question that I have been asking myself quite a bit lately – what is your reality? Think about that for a second before answering. We get bombarded from all directions (media, government, business) by someone else's reality (or one they want us to believe). Too much of that starts to change the way we see our reality.
So, when we strip it all away, when we really look at the exact details of your life, it may be that things are a lot better than we have been led to believe. Spend some time thinking about it.
What is your reality? How can you keep changing it for the better?
Next chapter: The role of the younger generation in SA, and what we need to do to support them.
Previous chapter: Making the most of SA's creative talent and abilities.
This post is a chapter of the SA Blook: A Piece of Significance, an online book written by a diverse group of writers with strong views of our country and the reality we find ourselves living in. The other chapters in the Blook are here:
- The new South Africa - is it real?
- Is SA rich or poor?
- What the world thinks of South Africa and what our global opportunities are
- The importance of each individual's contribution collectively
- SA Inc and the business of doing business in SA
- The beauty and grandeur that surrounds us
- The importance of technology in SA's global emergence
- Building brand South Africa
- Making the most of SA's creative talents and abilities
- Innovate for a better South Africa
- The role of the younger generation in SA, and what we need to do to support them
- Connecting South Africa - Communities that transcend technology
- We are African - the role of collaboration in South Africa's growth
This post is licensed under the Creative Commons Attribution-Noncommercial-No Derivative Works 2.5 South Africa license.
The picture is used under stock.xchng's standard license and was taken by Lynette Lan.
Posted by Duncan Drennan at 09:30 2 comments Links to this post
Tags: blook, opportunities, problems, sa blook, solutions, south africa
Friday, May 30, 2008
Blook SA
Sometimes you have the opportunity to be involved with something unique, and I am fortunate enough to be in that position.
Monday will see the release of The Blook SA. I am very honoured to have been asked to write a post for it, and I am looking forward to reading the whole thing. There are some really awesome people involved:
- Andy Hadfield
- Duncan Drennan
- Eve Dmochowska
- Grant Brewer
- Justin Hartman
- Kerry-Anne Gilowey
- Mandy de Waal
- Melissa Attree
- Nic Haralambous
- Paul Jacobson
- Saul Kropman
- Tycoon's Geoff Candy and Hilton Tarrant
- Siyabonga Nhlumayo - guest writer
Darren Gorton of Out-Think has been the organising force behind this. Here are all his Blook related posts, and the original idea.
See you on Monday when you come back to read the full Blook :)
Posted by Duncan Drennan at 10:30 1 comments Links to this post
Tags: blook, solutions, south africa
Wednesday, March 05, 2008
Degradable plastic
I recently bought some apples and spotted an intriguing little logo on the back of the plastic packaging. I look carefully at just about all plastic packaging these days in an attempt to identify what type of plastic it is (and therefore how recyclable).
What I found was a bit different to what I was expecting. Below a little logo was a website reference, www.degradable.net. So, off to the website to find out what this was all about.
It turns out that these smart guys have developed a low cost additive for polyethylene and polypropylene which causes the plastic to break down into a biodegradable form (the long plastic chains break down into shorter chains which can then be accessed by micro organisms which break them down to carbon dioxide and water. You can read the full details on their site). Astrapak are the South African suppliers of these plastics. There are also some alternatives to the d2w process which make use of light sensitive, or starch additives.
The great benefit of this is that plastics which are disposed degrade much faster (they can be set to degrade after 60 days or up to 6 years later). One of the issues that this technique creates is that it impacts on recycling. The degradable plastic can be recycled, but in their words, "..there are many different and complex permutations of both input feedstock and output materials which need to be individually considered," i.e. it's complicated. It seems like it is easier to create recycled material that is degradable, while creating non–degradable recycled products is trickier.
This seems like a big disadvantage, but according to the EIA only 5% of plastics produced in America are recycled (I am sure that figure is much lower for South Africa). That means that up to 95% of the plastic produced ends up in land fills, water ways and generally strewn around the country side. At least using degradable plastics means that they will have a smaller, and shorter impact on our environment.
I am sure that a lot of people would rather argue the case for bioplastics. Personally I have always been sceptical of the benefits of bioplastics (and biofuels), mainly due to the pressure they place on food prices. More recently there have been some studies revealing that biofuels may damage the environment more [1][2] than emissions due to conventional fuels (bioplastics come from the same process, and therefore have a similar impact). So bioplastics may not currently have all the benefits that they claim.
Degradable plastic is a great product due to its reduced impact on the environment, but we do need to examine how we use and dispose of plastics. The reality is that plastic feedstock (oil) is a limited resource [3] and we need to use it wisely. Biofuels and bioplastics may not be the panacea that many people have hoped for. Only a small percentage of plastics are recycled. Plastics that are recycled are typically used to make other products rather than replace the recycled product, which means virgin feedstock is constantly required.
The real long terms solution is to reduce the amount of plastic we use, as well as reuse it as much as possible, and to continue recycling when a product reaches the end of its lifetime. So, in my mind, the question is this: how do we create plastic products with longer lifetimes? That is what really needs to change.
References:
[1] "Use of U.S. Croplands for Biofuels Increases Greenhouse Gases Through Emissions from Land Use Change" by Timothy Searchinger, et al.
[2] More on the negative impacts of biofuels.
[3] According to Waste Watch,
"It is estimated that 4% of the world's annual oil production is used as a feedstock for plastics production and an additional 3-4% during manufacture."
Posted by Duncan Drennan at 13:19 3 comments Links to this post
Tags: environment, plastic, recycling, solutions, waste
Tuesday, January 23, 2007
Modifying controls for a BMW R1200GS motorcycle
I would like to share a bit about a small project that I did back in September. Stephan Thiel from Hex Microsystems contacted me about a friend of his who he does off road biking with. His friend, Kobus Raath, has had a below elbow amputation - that is, he has no left hand. Obviously this poses challenges when riding a motor bike, especially an off-road one!
![]() |
| The BMW R1200GS motorcycle |
Kobus has been creative enough to overcome all the obstacles to riding so that he can really enjoy his passion. He has modified the left handle bar so that a prosthesis (which he makes himself) can attach to it, and moved the clutch to the right handle bar.
![]() | ![]() |
| Modified left handle bar | Modified right handle bar |
So the next problem he needed to address was the riders controls, such as the indicators and horn. Here are some stock photos of the right and left handle bar controls for the R1200GS from BMW (the bike Kobus rides).
![]() | ![]() |
| Left hand controls | Right hand controls |
As you can see the left indictor, horn, brights/dim, ABS and Trip function buttons are all situated on the left handle bar, making them difficult for Kobus to access while riding (and slightly dangerous too!) - and that is where I come into the picture.
The first thing that I needed to do was analyse what the constraints of the motor bike were so that that I could decide on a plan of attack.
Kobus did his research when he went about choosing which motor bike to buy. The electrical system R1200GS runs on a CAN bus and there is a controller that performs all the functions. This means that it is relatively easy to achieve the required actions by stimulating the inputs of the controller, or in other words, we can trick the controller into thinking that one of the rider controls has been pushed.
The next step was to decide on how Kobus interfaced with the system - in the end we decided to do it like this,
| Sequence | Action |
| Right indicator: single click | Right indicator |
| Right indicator: double click | Left indicator |
| Right indicator: push and hold | Horn (until released) |
| Indicator cancel: single click | Brights/dim toggle |
In retrospect we made a mistake by not keeping the indicator cancel as its normal function and then using a double click for the brights/dim toggle. The indicator cancel has an auto cancellation, but it only occurs after a certain distance which can sometimes cause confusion when driving in urban areas. Other than that small oversight the controls turned out to work quite well with this method.
From there on it was all implementation, construction, and debugging.
I managed to find the wiring diagrams r1200gs.info. The switch configuration is relatively simple as each switch simply pulls one of the controller inputs down to ground to activate its function. The final solution was a simple microcontroller to time the inputs from the right hand controls and to switch the controller outputs based on the depression sequence of the controls. I had some trouble with the microcontroller acting a bit erratically when the motor bike was on, but that was solved by making the code more robust to erroneous inputs.
Kobus had this to say about the final system,
"Hi Duncan,
Just a word of thanks for the construction and programming of the control unit for my bike. It makes a world of difference being able to control my electrical systems by one hand. The upgrade made all the difference and the feel of the controls is excellent.
Again, thanks for some fantastic service.
- Kobus"
![]() |
| Kobus taking a ride |
I hope that this brief description of a simple project will give you some more insight into what I do (and can do), and how I go about approaching it. I really want the things that I create to serve their user, not the other way around.
Creating simple interfaces and building a better life for my users is the most important aspect of my designs. I hope that I'll be able to do that for you some time soon.
Thanks to Kobus for the photos of his bike, H Marc Lewis for providing the great website r1200gs.info and Hex Microsystems (check out their GS-911 diagnostic tool for BMW motorcycles)
Posted by Duncan Drennan at 15:00 0 comments Links to this post
Tags: case studies, design, engineer simplicity, solutions
Friday, August 11, 2006
You do what?
Currently the main work that I do is as a consulting and design engineer and I've been trying to beef up my marketing. I've realised that marketing engineering design and consulting can be a bit difficult for a couple of reasons.
The first reason?
Very few people actually understand what engineers do....and most of those that do, are engineers.
At first this caught me a little bit by surprise until I spent a little time thinking about it. I actually thought that more people would have an idea what engineers do (or can do, at least). I suppose that I shouldn't have been surprised - there are lots of reasons why people would have little or no knowledge of engineering. I would say that there are two main reasons, (1) engineers, and (2) the word engineer.
Firstly engineers....well what can I say? Ever been at a party or dinner with an engineer and someone has asked what they do? As soon as the words, "I'm an electronic engineer," roll off their tongue you can feel the fear as people wait in trepidation for some arcane explanation designed to impress a magna cum laude Ph.D graduate. During the explanation everyone's eyes roll back as they wait for the first chance to change the topic.
Put another way - we fail to explain ourselves well
The other problem is the word engineer and its multiplicity of meanings and interpretations. If you go look up the word engineer in the dictionary you'll find a number of meanings from,
engineer: "a person who runs or supervises an engine or an apparatus"
to something that I feel is closer to my definition,
engineer: "a person who uses scientific knowledge to solve practical problems"
As engineers we have not managed to create a clear definition of who we are and what we can do. And what is that really?
Well, one thing - engineers solve problems.
I'll be touching on some solutions to these issues in the future, along with my other marketing struggles - for now, send me some thoughts on this (and other reasons why engineering is not understood) - I'd love to hear them.
Technorati tags : engineers, marketing
Posted by Duncan Drennan at 16:47 1 comments Links to this post
Tags: engineering, problems, solutions






