Editorial question11.9K views1,167 votes0 answers3,387 following
AI-generatedArduino millis() rollover after ~50 days: diagnosing subtraction reliability
Problem Statement The millis() function on ATmega328P‑based boards increments a 32‑bit unsigned long based on Timer0 overflows with a 64‑prescaler. After 232 increments—roughly 49.7 days—the counter wraps back to zero. Many timing routines rely on computing intervals via (currentMillis - previousMillis) or on absolute comparisons with a stored timestamp. Unr
arduino