well here's my predicament...
For my leds in the roof of my car, I'm planning on having all of the current driver circuitry in the trunk using shift registers and darylington arrays. I then want to add a microcontroller to this so that I can controll different display patterns, and be able to make adjustments with my keypad and LCD, which I need to mount up front.
This gives me a 15 ft span (after I route the wires under the trim and such) between the keypad/lcd and the microcontroller. I dont know how the microcontroller will handle this large length of wire, not to mention the elecronic noise it will be subjected to.
Another thought is since I'm going to be needing quite a few I/O pins to drive my leds, I could add another micro up front for the Keypad/LCD. So then I would have a 15 ft span between 2 micros.
Any suggestions?