I am currently working from the library and sketches provided at http://code.google.com/p/fastspi/
This is an Arduino sketch that uses the fastspi library to drive the TM1809 chip and LEDs with an ultrasonic sensor
Currently I have the Fastspi library working to drive a strip of LEDs out or one arduino pin at a time. I have been able to modify the sketch to alternate the drive between two pins with the use of a trigger switch
I am trying to find the right ultra sonic sensor that will rech 25 feet, then incorporate that sensor as a trigger for my LED strand.
Eventually I would like to create a class from this library with instances for each pin, then call that up within my sketch.