Important Links
- Main page of the Arduino platform
- All Arduino boards and products
- Comparison of board specifications
- Arduino boards comparison guide by Sparkfun
The LilyPad Arduino is a microcontroller board designed for wearables and e-textiles. It can be sewn to fabric and similarly mounted power supplies, sensors and actuators with conductive thread.
- LilyPad platform's main page
- LilyPad accessories by SparkFun
- Sew Electric book: Sew Electric is a set of LilyPad Arduino tutorials that brings together craft, electronics, and programming.
There are different board models:
In my opinion (Felipe), to make our choice of LilyPad board, we have first to decide if we want or not our t-shirt to be washable.
If we don't intend to make a washable t-shirt, then the LilyPad USB should be the better option, as we can sew it permanently to the t-shirt and because it: * is the newest model; * can be easily programmed as it has no need of external FTDI (that is, USB-to-Serial converter) as the other LilyPads do; * can easily be connected to a battery as it has on-board JST connector and LiPo battery charge circuit;
If we do intend to make a washable t-shirt, the LilyPad SimpleSnap could be a good idea, as it has snap fasteners; we could sew one of the halves of the snaps to the t-shirt and then we would be able to easily connect and unsnap (remove) the board from the t-shirt to wash it. Thhis board features a permanently attached battery, but it also has a charging circuit, so this shouldn't be a problem. To charge it, we need a FTDI board (and we could make a more user-friendly charger), but if we chose the SimpleSnap, we would already have one to program the microcontroller. * Snap fasteners sold at SparkFun * Intro to snap fasteners
We would also have to think about how would we deal with the other components attached to the t-shirt (for instance, sensors and actuators), as they wouldn't have snap fasteners and would be sewed to the t-shirt. An interesting possibility is using something like the Snap Bricks which used to be sold by SparkFun. Eahttp://en.wikipedia.org/wiki/Inertial_navigation_systemch component is connected to a small PCB, in which some snap fasteners halves are "encrusted"; the corresponding other halves are sewed to t-shirt and connected to the conductive threads which run across the shirt and connect all the components. When we snap the two halves together, we close the circuit, and the components are then connected to each other as they should. When we want to wash the t-shirt, we can easily unsnap all the components and the only remaining things in the t-shirt would be the conductive threads and the snap fastener halves, which are washable. If we don't find a commercial version of this PCB, we can easily make our own, like this guy did. With the tools and resources we have at the lab, we could make a smaller (and way better looking) version.
- Original snap bricks page with board layout files
- We could even use magnetic snap fasteners (like this one, but smaller - do not forget to check if it is conductive) so that the components are more strongly (and safely) connected to the t-shirt.
- Inertial navigation system on Wikipedia
- Dead reckoning on Wikipedia
- What is Degrees Of Freedom on Arduino website
- DOF modules on Arduino website: section for multiple sensors combined into a "Degrees Of Freedom" sensor or module
- Guide to gyro and accelerometer with Arduino including Kalman filtering
- MPU 6050 page on Arduino Playground
- http://www.varesano.net/projects/hardware/FreeIMU: an Open Hardware Framework for Orientation and Motion Sensing
- Sewing with Conductive Thread at SparkFun
- How To Get What You Want: Wearable Technology Documentation
- Conductive threads at How To Get What You Want
- Fabrics for conductivity, shielding, ESD protection
- Conductive materials
- 101 on electrotextiles
- connecting hardware & software on soft(er) circuits
- DIY Wearable Technology
- Bluetooth Basics tutorial at Sparkfun
- Bluetooth modules available at SparkFun
- Wireless Buying Guide by Sparkfun
- Sparkfun Bluetooth Mate Gold
- Red Bear BLE Mini
- Biometric sensors sold by SparkFun
- Pulse sensor
- Pulse Sensor Getting Started Guide
- Single Lead Heart Rate Monitor - AD8232
- Cable - Electrode Pads
- Sensor pads
- Polar heart rate monitor interface
- Heart rate transmitter
Le vêtement biométrique intelligent. Fonctionnalités:
- Moniteur de fréquence cardiaque
- Compteur de cqlories
- Podometre
- Moniteur du rythme respiratoire
- Historique de la condition physique
http://www.smartsensing.fr/technologie-smart-sensing/
Smart T-SHIRT has inbuilt GPS and sensors that monitor your heart rate and running speed.
- HEART RATE : Track your heart rate and view your real time ECG with great precision.
- HEART RATE VARIABILITY : HRV is an essential tool to measure stress and training fatigue to avoid overtraining.
- BREATHING RATE : Learn to control your breathing, increase your performance and reduce stress.
- BREATHING VOLUME: Learn what your lung capacity is for each of your activities. Avoid hyperventilation and apnea.
- ACTIVITY(STEPS, CADENCE & CALORIES) : Your intensity level, steps, and pace are recorded on your dashboard and visible IN REAL TIME on your device.
- SLEEP : Hexoskin is the ultimate sleep tracking device: measure your resting heart rate, breathing, and sleep positions.
http://www.cityzensciences.fr/cityzen-sciences-nos-missions/
Cityzen Sciences est une entreprise française créée en 2008, spécialisée dans la conception, création développement de textiles « connectés ».Un textile connecté est un textile doté de micro-capteurs intégrés capables d’effectuer le monitoring d’individus : température, fréquence cardiaque, vitesse et accélération, géolocalisation.
http://www.cmst.be/groups/StretchTeamPresentation.pdf
CMST develops technologies to make elastic electronic devices, mainly for integration into textiles. The principle behind an elastic microsystem is that an electronic circuit is divided into functional islands (containing the electronic components), which are interconnected by meander shaped, stretchable interconnects.The whole is encapsulated into an elastic polymer.