We love some good LED blinking as much as the next person but after years of LED-soldering we need something cooler to get us excited. Sure there are RGB LEDs and those are fun too but what comes after that? Well, we have the answer: Digital LED Strips! These are flexible circuit boards with full color LEDs soldered on. They take a lot of LED-wiring-drudgery out of decorating a room, car, bicycle, costume, etc. The ones we carry come with a removable waterproof casing.
Digital RGB LED Strip tutorial - [Link]
Fabien Royer writes:
As part of a netduino hacking tutorial that I’m authoring with my friend Bertrand, I wrote a set of classes designed to drive an 8×8 LED matrix relying on persistence of vision.
Driving an 8×8 LED matrix with a netduino using persistence of vision – [Link]
This project shows how to build a 5×8 LED matrix controlled by Arduino and placed on a Jacket. View details on the link below.
Arduino Lilypad – 5×8 LED Jacket – [Link]
This project is a four in a row game using a PIC microchip 18F252 controller. You can play against one of your friends, while the PIC keeps track of games won and who’s turn it is. The device uses 43 two color 10 mm leds.
Four in a row game – [Link]
This project is a LED mood lamp controlled by a PIC microchip 16F628 microcontroller. The device can be controlled by Sony IR remote control signal. The remote control codes are stored in the PIC’s eeprom.
3 Watt LED mood lamp IR remote controlled – [Link]
hwydd is a small object (actually half a ping pong ball), interacting with its owner and environment. The object permanently aggregates light samples (i.e. it measures the every second and stores the average every some seconds). If you take it into your hand it notices the raise in temperature and tells you how it experienced the day (i.e. playing back the light levels of the day in time lapse). Check the video to better understand how it works.
hwydd: How was you day, darling? – [Link]
GuGaplexing is a new LED display multiplexing technique. Compared to Charlieplexing, GuGaplexing allows you to control twice as many LEDs, with just a few additional components.
GuGaplexed Valentine LED Heart project has 40 LEDs arranged in an ‘Arrow Piercing a Heart” arrangement using only 5 pins of a microcontroller. The project uses an AVR ATTiny13V Microcontroller. All the 6 I/O pins of Tiny13 are used in this project; 5 for controlling 40 LEDs and the 6th pin to read a switch. Pressing the switch changes the display animation on the pierced heart.
GuGaplexed Valentine LED Heart – [Link]
Using the fact that many microcontroller pins have three states (+V, GND, or “high impedence”, you can drive N*(N-1) LEDs from N pins. So the little 8 pin microcontroller like a PIC12Fxxx or an ATtiny11 can drive 20 LEDs on its five available output pins, and still have one pin left for some kind of input.
How to drive a lot of LEDs from a few microcontroller pins - [Link]