I have asked quite a few questions to get my ShowStopper LED lighting controller going, and it's finished. However, through all 5 PCB revisions so far, When the bluetooth module is connected to an Android phone (http://dx.com/p/jy-mcu-arduino-bluetooth-wireless-serial-port-module-104299
), everything is beautiful, as soon as the bluetooth link is disconnected, the LED strips flicker with pulsing of the status LED on the bluetooth module. I have tried moving the bluetooth module away from and next to the ATMEGA, placing it under the board or on top, connecting the module with a cable even. The flickering also feeds back into the MSGEQ7 readings from User audio, even into the vehicles audio system as a popping sound. But again, simply opening the Android app to establish a connection, gets rid of the popping, the flickering, and the bad readings... I am adding a decoupling capacitor to the power lines of the module in the next revision (.1uf), but is there something I can do to the serial lines?