Posted on 07 May 2008
The circuit is very simple. The RGB LED is hooked up to the PWM outputs on PORTB1 , PORTB2 and PORTB3 of the ATMega8. There is also a resistor between the LED and the ATM8 to limit the current to 20mA. There is also a link to the datasheet of the RGB LED that is used in this project. The code for the fading LED is written in assembler with the AVR Studio 4. In this example the LEDs will fade in and out one by one. The PWM timers of the ATMega8 are used to let the LED’s fade in and out.[more]
Posted on 07 May 2008
Alex writes:BlinkM is a smart LED, developed by Tod E. Kurt from ThingM. In a way it is a cousin of the Programmable LED. It is a microcontroller with an attached RGB LED. The idea is to implement PWM to control the color and brightness of the LED and put it in the controller. That means you have an abstraction level to make your programming easier. You can simply order “fade to red” or “fade to blue”.[more]
Posted on 23 Apr 2008
This is a small project to provide email notification via an RGB LED hooked up to the USB port.Uses a 4d-micro-USB module to provide power and RS232 to a Picaxe 08M controlling an RGB LED. Can control colour (seven colours: work email in red, newsletters in green, other in blue) and brightness by sending characters to the COM port, this is done by a Python script run every 10 minutes by Task Scheduler with an accompanying system tray icon to allow LED to be turned off again.[more]
Posted on 12 Feb 2008
The Fnordlicht is a lamp that enables endless color combinations through additive color mixing. The circuit uses an Atmega8 (same as Arduino) processor and a matrix of 9 RGB LEDs and can be controlled via RS232 or 12C.[more]
Posted on 09 Feb 2008
The circuit is simple and there are no push buttons as control is done entirely through the remote control. He use this circuit to light a flower vase. The flat case of the box that he chose does a good job at balancing the vase. The pictures provide some ideas. [more]
