In these slides I give an introduction to LilyPad Arduino and go on to talk about the myraid selection of sensors and actuators that can be used in wearable technology, followed by some examples of current wearable technology projects. I sum up with some of my thoughts on the state of play in wearable technology and what could be improved. I gave this talk at the opening plenary of Quantified Self Europe Conference in 2011.
5. LilyPad Arduino Microcontroller
Fabulousness Could be improved!
It’s sewable! It’s not cheap!
It’s open source – you can find More modules please
the Eagle files & code libraries
online
Different sizes and shapes of
Good number of digital & board
analogue I/O
Different microcontrollers
Great vector for encouraging
girls/ boys /adults/ artists
/anyone / to experience An industrial version with
electronics possibility of using different
voltages
It’s round (dismisses the idea
that electronics are sharp grey More competitors, to increase
and cold)
innovation
Enthusiastic & helpful
community Different types of I/O
9. Components: Sensors vs. Actuators
A sensor is an input device / an actuator an output device
Sensors Actuators
Input: stimulus / A physical Input: electrical signal - current,
quantity, property, or condition voltage, phase, frequency, etc,
which is measured
Output: mechanical (force,
Output: electrical signal - pressure, displacement) or display
current, voltage, phase, frequency function (light, display, dial
indication, etc)
Variations: output can sometimes be
displacement:
thermometers, magnetostrictive and
piezoelectric sensors.
Some sensors combine sensing *and*
actuation.
14. Sports
McLaren Human Telemetry System
Originally developed for F1, also used in sports such as football, rugby, & cycling
Combines several sensors:
Heart
Blood Oxygen
Respiratory
Temperature
Future:
Looking into core temp via swallow-able
thermometer pill to combat heat exhaustion
Sensors woven into fabrics
Bespoke sensor shirts
15. Medical
University of Illinois: Epidermal Electronics
Less than the width of a human hair, adheres to the skin like a temporary tattoo
Currently in development to monitor:
Heart
Brain
Muscle activity
Could also be used for gaming
Powered from energy from:
Solar Cells
Electromagnetic Radiation
Features:
Stretchy – moves with skin
Less invasive than traditional sensors
No gels / sticky pads / wires
Adheres to the skin via water soluble plastic
16. Military / Extreme Environment
The Australian National University: SLIVER cells
Lightweight and tough bifacial solar panels
Features:
Lightweight – paper/ hair
thickness
Tough
Bifacial – absorbs light on
both sides
Flexible
Can be used in various
environmental conditions
18. Fashion / Performance
Rainbow Winters: Sensing Fashion
Uses sensing inks and components for fashion & performance garments
Garments include use of:
Thermochromatic ink
Hydrochromic ink
Sound sensing
Electroluminescents
Holographic fabrics
19. Art / Making
KOBAKANT: How To Get What You Want
Online database of range of wearable technology and soft circuit solutions
http://www.kobakant.at
Sensor making instructions inc:
Conductive PomPom
Crochet Button
Crochet Tilt Poteniometer
Fabric Stretch Sensors
Felted Crochet Pressure
Knit Contact Switch
Knit Accelerometer
20. Wearable Tech / E-Textiles
An emerging technology
Is at a stage similar to where personal computing was in the
80s, but it’s on the verge of an explosion of ideas & manufacture
Interest in sensing wearables is predominant in
entertainment, sport, medical, extreme envirnoments, military
and lifestyle areas and is where the funding opportunities are
Obviously lots of opportunity al for innovation and room for more
start-ups/creators – but artists and makers need more industry
support working as sole traders with expensive components &
flaky business arrangements
Exciting advancements in research for creators – such as embeded
micro components, MEMS, inks and fabric pick & place sewing
machines
Conductive embroidery / weave which has embeded
LEDs, electroluminescents, sensors & acutators will change the
aesthetics of designing circuitry
21. Wearable Tech / E-Textiles
will be improved by…
Emerging tech could thrive faster with more open source collaboration and sharing of
ideas
Smart fabrics & wearable technology is still looking for a killer app to bring it closer to
mainstream acceptability / integration
Necessity for more standards and classifications
Sustainability – recycling, reusing, repurposing - supply chain isn’t yet set up for
wearable tech
A lot of focus on the technology, but not enough on what the consumer wants:
design, uses, size
Marketing focus – sales, dissemination, tech know how - how do we help the public
understand and use?
Developments in battery / power supply tech: less bulky, better
longevity, lighter, comfortable
Washable circuits, sensors and microcontrollers – to gain acceptability they need
robustness and logivity
22. Many thanks!
@Rainycat
http://rainycatz.wordpress.com
Rain Ashford 2011
Notes de l'éditeur
Hello, I’m Rain, work with electronics, code, artistic ideas and fabrics to create wearable technology and electronic artworks. My work background is in websites and interactive games and learning tools, I was a senior producer and technologist at the BBC. I have studied fine art, multimedia and electronics engineering, so it’s not surprising my passion is fusing art, code and electronics together.in my work I use many different types of microcontroller boards and electronic components. Arduinos are possibly the best known family of microcontroller – they were first invented in Italy by Massimo Banzi and his team to address the need for a way to combine electronics and product design for rapid prototyping. A microcontroller is a small computer on a single integrated circuit containing a processor core, memory, and programmable input and output peripherals. There are many other flavours, most are open source and run on code commands written in C programming language.
For wearable and fabric based artworks I use the LilyPad Arduino – it’s a sewable microcontroller, which means I sew the circuitry to and from the microcontroller with conductive thread. I use this microcontroller with all sorts of kit from standard components, to bespoke ones I put together, sensors, actuators hacked electronics, e-textiles and other conductive items. I use the Arduino IDE - integrated development environment to programme my work in C-ish programming language.My work is also interactive, often has music, includes a game, something to play with or has a practical and useful idea behind it.
Here is a list of my thoughts on the LilyPad Arduino, what’s fabulous about it and a few things I think could be improved.
My personal work uses lots of different components, I use various microcontrollers, but often use the LilyPad Arduino sewable microcontroller board with various, e-textiles, sewable components such as conductive threads and conductive velcro, buzzers, integrated circuits and sensors, plus electroluminescents. My work is also interactive, for example: user playable musical shirt, temperature sensing wear, musical games, proximity sensing and heart rate monitoring wearables.
I’m part of many communities around Maker and Hacker culture, that’s Hacker in it’s proper positive sense – defined as a person who hacks code or hardware for good! In the here’s a great community for coders, hardware engineers, enthusiasts and makers of all flavours - there’s lots of blending within groups of people and I see many friends who attend these meets at London Quantified Self meetings too. I also exhibit my work at Maker Faires and other tech and art events – I’m especially keen to try to encourage people to think about training and careers in technology.The top RH photo is Makers & Hackers, in February 2009, a one-day hack-a-thon where I first saw a sewing machine, soldering iron & Arduino side-by-side. The other’s are Maker Faires in Brighton and Newcastle, Chi-TEK hacked teapots show at the V&A and Culture Hack weekend.
What follows is an introduction to wearable sensors and acutators, plus some examples.
This brings me to components, focusing on sensors. I thought I should show you what actuators areas well. A sensor is defined as an input device and an actuator as an output device. A sensor takes input – that can be a stimulus, a physical quantity, property or condition which can be measured. The sensor then outputs an electrical signal – which can be current, voltage, phase or frequency and also can be via displacement for example thermometers, magnostrictive and piezoelectric sensors.Some sensors combine sensing and actuation.BTW incase you’re wondereing,magnetostriction(cf. electrostriction) is a property of ferromagnetic materials that causes them to change their shape or dimensions during the process of magnetizationActuators take an electrical signal – such as current, voltage, phase, frequency, etc, and outputs can be mechanical (force, pressure, displacement) or display function (light, display, dial, etc).
Here are some examples of wearable actuators - they produce an outputMotors are different to servos as the inside of a motor will just spin or work – whereas a servo contains gears and a potentiometer as well – so you can control speed and direction.Obviously you can use any actuator if you can attach it to a microcontroller or battery and the size is right!LEDs, LCD, OLEDs & electroluminescents can be seen as actuators too as they give an output.
There’s a huge amount and variety of sensors available, some come on PCBs and are ready to fit into bespoke housing, some are sewable, some come stand alone and some are surface mount. For wearables there’s a large variety, but we’re still at the R&D stage in many ways so some you can buy ready to sew into your work and some sensors you need and hack them together or you design your own PCB sensors and have them made up for your specific needs. Here’s a few examples, which is no way extends to everything out there and new versions of sensors are being developed for wearables all the time.
I’ve taken those lists of sensors and actuators and fitted them into categories of what I feel are the most important areas of wearable technology. This list isn’t exhaustive and there’s definitely a certain amount of blurring between the categories – I hope for the viewer it starts to give a bit of insight and an some idea of where the technology is lending itself in these areas. Please forgive my wibblyphotoshop skills!It’s very interesting to compare the categories. As you can see the biggest range of sensors and actuators are concentrated in military, extreme environment, self monitoring, lifestyle, are and maker’s categories. This is interesting to me for many reasons, it gives me an idea of whom is pushing the technology forward, who has the most funding and who is the most experimental and also the category with probably the least money and not much funding is equally as interested in a plethora of technologies and potential outcomes as the richest.
Formula 1 racing is tough on the body with forces of up to 4.5G pulling on the body as well as the driver loosing several litres of water in sweat, heightened heart rate, blood pressure, respiration and race stress.The McLaren Human Telemetry System was developed a few years ago to wirelessly monitor the vital signs of Formula 1 drivers and included sensors such as heart rate, blood oxygen levels, respiration and temperature. It came from an idea that humans could be monitored in a similar way to car telemetry data logging during races, testing and training.
Less than the width of a human hair, the ‘electronic tattoo’ adheres to the skin like a temporary tattoo! It is currently in development to monitor electrical activity in the heart and brain, it’s developers also feel it has potential for gamers as they managed to use it to control a simple computer game. When applied to the throat it was also able to detect differences in words such as up, down, left, right, go and stop. There’s no gels, wires or sticky pads, which often make the patient feel more uncomfortable and stressed – it sticks to the skin via water soluble plastic which makes it a bit like a temporary tattoo. It’s powered by solar cells that can generate energy or could get power from electromagnetic radiation.
SLIVER cells are touted to revolutionise wearable solar cells, especially for use in military and extreme environments where carrying heavy kit is sub-optimal and battery management can be difficult. Developed by the Australian National University Centre for Sustainable Energy Systems. They are the thickness of paper or human hair which makes them very light, they are also tough, flexible and bifacial, meaning they can absorb light from both sides. They can convert light into energy in various environmental conditions.
For me the most exciting prospect in sensor development is in micro components, for example miniature sensors and actuators in yarns and textiles. It would be so handy to have the ability to have our components already situated in the substrate of our garments. It would be fantastic to chose a fabric or a yarn that already encapsulated a sensor or actuator that I wanted to use in my work. I was very interested then, at Smart Fabrics 2011 conference to hear about the work of Nottingham Trent University, from Professor Tilak Dias. Their Centre for Research in Advanced Textiles are looking at a variety of methods for doing this. One example being micro-device encapsulation technology, in which devices are encapsulated with a flexible, hermatic seal for mechanical, thermal and electrical protection. Uses for these yarns could be in creating garments for self monitoring, medical, fashion as well as for industrial sensing purposes. I’m also hoping that this research will improve the longivity of sensors by making them washable and more sustainable.
Rainbow Winters is a designer who uses reactive inks, such as thermochromatic and hydrochromic as an intrinsic part of her garment design for fashion and performance. For example her Rainforest Dress changes colour when exposed to water and / or sun. In her collection she also uses sensors for her sound reactive dresses which light up electroluminescent panels.
If you fancy making your own wearable sensors then the KOBAKANT website is the place to go. It is full of really clever ideas for making a whole host of electronic components from sensors and actuators, plus other components. It also lists materials, tools, techniques and code for making things. KOBAKANT is an open source collaboration between Mika Satomi andHannerPerner-Wilson.
So to sum up, here are some of my thoughts on wearable technology & e-textiles as an emerging technology.
Finally, some thoughts from me on how wearable technology and e-textiles might be improved.