I need to create a cable that has 4 LEDs attached every 3m. The cable will be 40m long and will have some control electronics at the beginning. The purpose of the cable will be a LED chaser.
I've read whatever I could find here and elsewhere about LED chaser and they all focus on CD4017 and 555's. My requirement is anything that is efficient.
I was thinking of some cheap MCU and 15 miniature PCB's connected with SPI, but at best that would give me about 20 wires in the cable to create a LED chaser.
Is there a better way with less wires?? I don't need the complete solution I just need someone to point me to a better solution.
Anything is acceptable, LED driver chips, I2C, SPI, CAN, whatever can get me to as few wires as possible.