Wi-Fi firmware for classic Pro-Lite LED marquee signs. A small Wi-Fi MCU + MAX3232 bridges the sign's native <ID01> RS-232 protocol to MQTT, an HTTP API, and a phone-friendly web UI with presets and OTA. Turns a 20-year-old scrolling sign into a networked marquee — no vendor software, no IR remote.
mqtt iot esp8266 home-assistant marquee rs232 wemos-d1-mini max3232 led-marquee arduino-esp8266 led-sign pro-lite
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Updated
Jul 2, 2026 - C++