The Hidden Hardware Conflict Between WiFi and Addressable LEDs

Makers combining WiFi connectivity with addressable LED strips on ESP8266 face a fundamental hardware conflict—radio interrupts disrupt the timing-critical WS2812B protocol, causing flickering and unreliable behavior. This is not a software bug but a hardware limitation that forces developers to choose between disabling WiFi, accepting occasional glitches, or switching to ESP32 with dedicated RMT circuitry. Understanding these architectural tradeoffs upfront helps makers avoid wasted debugging hours and make smarter platform decisions.