The module consists of a Atmega8 microcontroller. It uses PWM to control 3 different LED’s found in a RGB Led. Because it uses PWM to control the 3 colours we can also control the brightness of the colours. This allows us to create various colours using the three original colors (Red,Green and Blue).
Tom’s RGB mood lamp - [Link]
This circular board has 12 LEDs animated by a microcontroller. Assembly and HEX code and EAGLE files are provided on the web page.
This project uses the Simple LED Animation Kit (SLAK post or page) with the LEDs arranged in a circle around the PIC16F628A. I decided to do this project after picking up some red SMD LEDs at HSC in Santa Clara, CA, last week. Although the only difference from the basic SLAK is the board design, I find that this layout to be have the potential to be more useful. It could easily be a medallion on a necklace. If I had blue LEDs this would go well in an IronMan Reactor Core package.
This board only needs 4.5V and in the video is running on only 3 AA batteries. You can see that the PIC is still in a socket.
If anyone is interested, I can easily change the SMD parts to thru-hole parts and post an updated board. [via]
Circle LED animation - [Link]
Jon Bennett writes:As a personal project in grade 12, I decided to build an LED Matrix and write the software to control it. I was able to submit the software for my grade 12 computer science final project, so that worked out well. When I first started looking into how to do this, I wanted to control every light individually. Since the parallel port has less than 12 outputs, additional electronics would be required to control more than 12 LEDs (light emitting diodes, tiny light bulbs). [via]
LED Matrix Computer Controlled - [Link]
The goal of this project was to develop 3D spinning mechanism capable of displaying smooth video or static images. The device uses a spinning ring with tri-color LEDs inside, and relies on precise angular sensing and persistance-of-vision and to create the effect of a spherical display surface. Although the system consists of only a single ring of LEDs, the high rotational speed makes it possible to display any combination of red, green, or blue pixels along the surface of the resulting sphere. (3-bit color depth!). [via]
Persistance-of-vision LED Sphere - [Link]
This project, called “Mini-Flash”, is a programmable LED Sequencer/Flasher that is based around the PICAXE 08M microcontroller. It is basically a spin-off of the Pro-Flash Programmable LED Flasher/Sequencer which is based around the larger Picaxe 18X microcontroller. The Mini-Flash sports the same features as the larger Pro-Flash controller, with the only difference being it can only control 4 LED channels instead of 8. This neat controller is programmable in a BASIC-like language very similar to the “Basic Stamp” manufactured by Parallax Inc. This project also includes the ability to reprogram the LED sequencer using a PC-based (i.e. Windows) program that includes a unique and intuitive Graphical User Interface. [via]
Mini-Flash - [Link]
For most of my LED applications a very special circuit was designed to run the LEDs at a “constant current”. This provides a constant amount of power to the LEDs and also provides a constant amount of light for a longer period of time. This circuit also allows the LEDs to run on almost any normal voltage above 4 volts. This means you can use multiple sources of power for the same light, a few AAA batteries, or even a car battery . [via]
Constant Current Bright LEDs - [Link]
If you want to learn how to control RGBLED this is the right website that you should to visit.Here is the sumary about this website “The RGBLED and mRGBLED controllers allow you to control the color of RGBLEDs. This might sound trivial, but it actually takes a lot of resources to let you be able to set an RGBLED to any color you’d like. In addition to just lighting an LED up with a given color, these boards also let you install a color or setup transition/animations effects. They are easily controller via an RS232 connection (serial port) or an SPI connection (logic level).The boards can be built reasonably inexpensively and there are PC boards available for either model. All source code for the onboard PIC processor as well as the software for configuring and using the controllers is available. The protocol is a simple protocol well documented.” [via]
RGBLED Controller Project - [Link]
Miniature fires that flicker create the sense that someone is nearby in a model scene. They can add a moving effect to a dolls’ house, model railroad or Christmas Village scene.This fire will be created using a set of LED’s especially for the purpose of fire from Evans Design. As this fire is going to be part of a portable table display, a 9 volt battery will be used to power the LED’s which in this case are designed for DC (direct current) use. [via]
Make a Miniature Fire – [Link]
This project requires a basic IC operates as a linear voltmeter with a 1.2v range. The LM3914N to be used for this project.It is a chip specially designed to drive a bargraph display,using 10 leds as the scale. This project needs is to get full power showing all 10 leds lit, with just the bottom led lit when the fan controller is turned right down to around 6v. [via]
A bargraph display - [Link]