Hi, I have a duemilanove with a shifty VU shield and a kind of urgent problem:
I need somecode which gets sound of a certain frequnzy on the audio input (german 5tonfolge). each frequenzy should then be translated in a single numbre as output on the serial port fo the arduino.
I have just done a bit code for LEDs so far (by modified a bit of the macetech example code) so any help will be greatly appreciated.
EDIT: First essential hint needed: How to solder a serial cable for ttyS0 and get some numbres sent to it? Don't I just have to connect Rx an Tx between arduino and the serial cable?