Smart WLED Clock with RTC, PIR, Audio feedback and Environmental Monitoring

The Smart WLED Clock is built around an ESP32 Wroom-32 microcontroller running WLED firmware, which coordinates all system operations and connects to Wi-Fi for advanced control. Timekeeping is managed by the DS3231 Real-Time Clock module, ensuring accurate time is maintained even if the ESP32 restarts, with backup power provided by a CR2032 coin cell battery. Visual output is driven by 73 WS2812B addressable RGB LEDs, allowing for dynamic clock displays, lighting patterns, and custom animations. Environmental data is captured by the DHT11 sensor to track room temperature and humidity. For security and interaction, a PIR motion sensor (such as the MH-SR602 or HC-SR501) detects local movement, while an IR receiver (TSOP1838) allows infrared remote control input, and a JQ6500 or DF Player sound module provides audio feedback and alarms. Power management is handled by an IP5306 IC paired with an 18650 lithium-ion battery in a dedicated holder, supplying a stable power source alongside an AMS1117 3.3V LDO regulator to step down voltages where necessary for sensitive logic components. A CH340C USB-to-TTL converter facilitates programming and serial communication with the ESP32, all housed inside a custom 3D printed enclosure with a matching printed circuit board.