LEDs 101

Image result for led diagram

LED = Light Emitting Diode

advantages over incandescent light sources = lower energy consumption, longer lifetime,  smaller size, and faster switching, variety of color and controlling capabilities!

RGB LED  = LED containing one red, one green and one blue LED

PWM = post width modulation is a technique used (in/with Arduino) for controlling the brightness of the LEDs, allows you to fade the LEDs, Arduino only has 6 pWN pins so you can only hook up 2 rgb LEDs at a time =[

-also PWM is what is called with AnalogueWrite() commands

-also PWM is used for driving a motor at various speeds

-has to do with frequency

RGB basic hookup +code

so many color possibilities!

fade 1 RGB LED

 

 


My experience

Hooking up one LED and experimenting with it’s color were fairly easy and satisfying.

Next getting the fade working was easy, hwoever understanding the fade code is much more difficult.

Next I want to control more than 1 LED, which I found to be more difficult than expected.

Other things you need to control LEDs

*resistors

*transistors

Using technology and sculpture for performance of Social Concept

“This project,  HUSH. It’s a helmet with a panel in the front that people can tweet at to make close at any time. It’s a comment on how we talk to people online as opposed to face-to-face, and how easy is is to shut people off with even a small gesture.” Made using an Arduino and a stepper motor

 

I see this as a really important concept and I love how they brought it to life with this beautiful yet unsettling design.  I’ve never seen a motor incorporated into wearable electronics and i love it! I want to build a wearable wing with motors, sensors and LED lights.

Internet of Things

Of all the technology trends that are taking place right now, perhaps the biggest one is the Internet of Things; it’s the one that’s going to give us the most disruption as well as the most opportunity over the next five years.

~Wired Magazine

IoT is about “the interconnection via the Internet of computing devices embedded in everyday objects, enabling them to send and receive data.”

connected devices

smart devices

A Strong Friend with a history

Micro-controller History

Intel and Texas Instruments were the first companies to develop micro-controllers in the 1970s.  Gary Boone of Texas Instruments designed a single integrated circuit chip that could be programmed to perform a range of functions, the TMS 100. TI offered this micro-controller for sale to the electronics industry in 1974.  By 1983, nearly 100 million ‘TMS 1000s’ had already been sold.
The TMS 1000 was the brains of the Speak & Spell speech synthesizes with electronics, software a keyboard, display and slot for TOM-based library modules.
By the 1990’s erasable and programmable memory was added to the micro-controller.
Now I’d say we are in a the golden age of micro-controllers.  There are hundreds of types many of which are small and affordable.
Perhaps most revolutionary of them all and the one I will be working with is the Arduino. Arduino is a development board so YOU can create your own unique microcontroller projects!
arduino_uno_test
Arduino is an Italian first name meaning “strong friend”

 

“Arduino is common term for a software company, project, and user community, that designs and manufactures computer open-source hardware, open-source software, and microcontroller-based kits for building digital devices and interactive objects that can sense and control physical devices.”