usb controlled rgb led

Posted on Feb 4, 2014

The article on my RGB LED fader has been one of the most-visited articles on this blog. Since posting it, I`ve designed and built another microcontroller-based RGB LED project, this time controlling the colors from the computer over USB. The AVR needs to be overclocked to run the USB code without a separate oscillator. The osccal. c source file wat

Click here to download the full size of the above Circuit.

ches the USB frame clock and calibrates the AVR internal RC oscillator with the OSCCAL register. This technique was adapted from the V-USB wiki. The host sources are in the host/ directory. A 32bit Linux binary is included, or it can be built from source with the included Makefile. Libusb is required.

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