The design of the dress followed the fiber optics that it needed to support. As there is one central light source, I designed the back to include a pouch for the handle, and the straps of the dress to bring the fiber optics from the center back to the front, and back around the body to an even distribution at the hips. A big design challenge was how to give the filaments enough lift at the skirt, as I wanted the skirt to push them out at as near to a 90 degree angle as possible. I was considering things like a fully boned structure or 3D printing small pieces for each group of filaments to angle them out at a perfect right angle. However in the end I just went low tech and stuffed the skirt with tutus :) I'd still like to explore these other two options eventually. Be warned that this Instructable includes a major fail at one point, so read the whole thing first if you intend to make this.
Related: Sewing Electronic Textiles
Electromagnet Superhero GloveFor a class assignment, I needed to make something fabric-based which took an Arduino, some programming, and at least two inputs and outputs. After sketching a few different ideas, I hit on this one: an electromagnetic glove for MagnetoGirl. It sprang to life for me, because magnetism is an invisible force which can seem magical. Also, a superhero can be given life, character, and (the best part) a cool costume. I decided to make an opera glove with some embedded circuitry. MagnetoGirl's powers are a bit weak right now, though- her glove still has to be plugged in to the laptop for power!Home Alert: Arduino + Cloud Messaging On A Large DisplayIn the age of mobile phones, you would expect that people would be responsive to your call 24/7. Or… not. Once my wife gets home, the phone stays buried in her hand bag, or its battery is flat. We don’t have a land line. Calling or SMSing to ask for a lift home from the train station on a rainy night or calling to ask if my keys are still on my desk is literally wishful thinking. I have this problem often enough to warrant a solution. Home Alert is made of these parts: A Freetronics Dot Matrix Display, which is an array of 16x32 LEDs. Home Alert is controlled via a web page that is hosted on Heroku, a cloud-based application host. Have a look at the home page (show in the first attached image in this step), where the form awaits a new message from the user. The first field accepts a numerical hardware code. The message you want to display goes to the second field. If you want to make some noise, check the Yes! Let’s get started!
How to make a Heating and Cooling Jacket : Writing the CodeOnce you have all your sensors in the jacket you must write the code to get the LEDs to fade according to the temperature of the body. 1. Download the Lilypad program from Then you will be able to program your Lilypad. 2. 3. 4. *This may take a few tries: it is quite touchy. 5.Setting up Processing for Android development environmenteTextile Lounge — everything electronic and textilesLilyPad Arduino – sensing ambient temperature | Alyson FieldingThis project uses a temperature sensor and five LEDs sewn into a wrist warmer to respond to ambient temperature. If the temperature drops below 12°C, the lights start fading in and out. If the temperature is 1°C or below, the lights twinkle. This guide is written for Mac OS X. (tl;dr: Wrist warmers are practical warming devices, they can also tell you when it’s cold enough to wear them, through the application of pretty twinkling lights.) What you’ll need The following LilyPad Arduino components. These LilyPad components come bundled in the LilyPad e-textile Beginner’s Kit. A LilyPad Simple boardTemperature Sensor5 white LEDs110mAh Lithium Polymer BatteryLilyPad FTDI Basic (for connecting to computer using a USB cable – the rectangular component in the first picture above)Conductive threadSewing needle Additional components I used Maplin and my existing sewing / electronics kit stashes for these. Crocodile clipsMini B USB LeadMultimeter (I used a digital multimeter)Scissors 1. 2. 3. 4. 1. 2. 3.
Phatch – Editar imágenes por lote en Ubuntu | El blog de alejandrocq – Videojuegos, Tecnología, ActualidadPhatch es una aplicación que nos permite editar varias imágenes fácilmente. Podemos redimensionarlas, añadir transparencias o sombras, bordes… entre otras cosas. Para instalarlo en Ubuntu, abrimos un terminal y ejecutamos: sudo aptitude install phatch Una vez instalado, lo ejecutamos en Aplicaciones->Gráficos->Phatch procesador de fotografías por lotes. Seleccionamos el boton + de la barra de herramientas, y nos aparecerá una lista de acciones que podemos realizar. Debemos añadir la acción guardar, que nos permitirá elegir el formato de salida, el directorio donde se guardará… etc. Os explico que significa cada opción: Escalar Ancho del lienzo: Ancho de la imagen en píxeles, centímetros… y otras unidades.Alto del lienzo: Alto de la imagen en píxeles.Resolución: La resolución de la imagen en ppp. Guardar Una vez tengamos todo listo, podemos guardar esta lista de acciones para utilizarla en otra ocasión, seleccionando lista de acciones->guardar, o simplemente ejecutar las acciones. Me gusta:
Leah BuechleyLED Current Limiting ResistorsLED Current Limiting Resistors Skill Level: Beginner by a1ronzo | December 02, 2010 | 36 comments Limiting current into an LED is very important. An LED behaves very differently to a resistor in circuit. Resistors behave linearly according to Ohm's law: V = IR. For example, there is a specification for diodes called the characteristic (or recommended) forward voltage (usually between 1.5-4V for LEDs). Using the circuit above, you will need to know three values in order to determine the current limiting resistor value. i = LED forward current in Amps (found in the LED datasheet) Vf = LED forward voltage drop in Volts (found in the LED datasheet) Vs = supply voltage Once you have obtained these three values, plug them into this equation to determine the current limiting resistor: Also, keep in mind these two concepts when referring to the circuit above. The current, i, coming out of the power source, through the resistor and LED, and back to ground is the same. Example 1 Example 2