USB LED Controller with Full Color Feature

Overview

The project is built around a Microchip PIC18F2550 as it produces an RGB LED controller that can change its color depending on screen, CPU load, or temperature.

Details

The device is using USB connection in order for the controller board to communicate with setup application which aids in the changing of LED colors. The connection of the LED is in common anode only which depends on the selected operation mode such as constant color 1-4, temperature base color with adjustable range, and fast & slow color range. The color of the LED changes automatically through all possible colors of the rainbow within a certain time in the color change modes.

The DS1821 temperature sensor is used in the temperature based mode where the color changes depending on the measured temperature. This can be used in lighting up a radiator at home depending on its temperature. Using a C# Windows application via USB, the constant LED color in the constant color modes is possible to be configured. Other features involve in lighting up the LED in a color including changing from blue to red and can be adjusted according to the screen content.