rgb_led UNLISTED

Not provided.

This circuit is supposed to implement the following: - Adding two stereo channels from an iPad headphone jack into a mono signal - Split this signal into four channels: * one channel for low-pass filter * one channel for band-pass filter * one channel for high-pass filter * one channel for speaker - bias the outputs of the filters with +2.5V for Arduino analog input

Not shown, and already implemented, are the following: - Arduino samples the three signals and calculates signal strength - Arduino controls RGB channels of a LED strip with brightness in each color proportional to signal strength in low/mid/treble. LED strip is controlled indirectly via logic-level MOSFETs.