Looking for feedback on this project approach.
Goal: Linear strand of overhead string lights (like these), that fade on (in front of) and off (behind) to light the path of the user.
- Wire WEMOS D1 Mini boards every 9 feet, with PIR sensor on each board.
- Each board pings a centralized Raspberry Pi server every (X)ms with sensor state, and checks for brightness settings.
- Server calculates the user's location based on received sensor states and responds with the appropriate brightness levels of the 2 lights that the board controls.
- The board then runs a ramp script to adjust the 2 LEDs to those brightness settings using the PWM output from 2 of the digital pins.
I want to do this over 200-300 feet of trail, so I am thinking to avoid voltage drop issues, I might provide 12V of power and put a voltage converter leading to each board so there's reliable 5V for the circuits.
I am curious if people have any thoughts on whether this will work, or suggestions for better chance of success before I order 20 boards and sensors, haha.