RGB System

Goal

Provide clear visual feedback without blocking motor control.

How it works

The RGB subsystem uses: - rgbActive: whether a blink pattern is running - rgbIntervalMs: time between toggles - rgbBlinksLeft: number of remaining ON pulses - rgbOn: current on/off state

startRGBBlink()

Prepares a pattern: - saves target color - sets blink count and interval - resets timing state

updateRGB()

Runs every loop: - checks if interval elapsed - toggles LED on/off - decrements blink count only after completing an ON→OFF cycle