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  • Using the HLK-LD2420 Sensor with an ESP32-C3 Supermini in ESPHome

    Using the HLK-LD2420 Sensor with an ESP32-C3 Supermini in ESPHome

    If you’re trying to integrate the HLK-LD2420 24 GHz radar module into ESPHome on an ESP32-C3 board (specifically a “C3 Supermini” style dev board) and finding that ESPHome reports a firmware version of v0.0.0—or simply marks the component as “FAILED”—this guide should help you get it up and running. Common Symptoms of the Problem Root Causes…

  • ESP32-C3 Supermini-Based Smoke Detector with Environmental Monitoring

    ESP32-C3 Supermini-Based Smoke Detector with Environmental Monitoring

    Introduction The ESP32-C3 Supermini offers a compact yet powerful platform for building smart devices. This project demonstrates a smoke detector with environmental monitoring capabilities using the BME280, MQ2, and CSS811 sensors. The device is not designed to replace conventional smoke detectors but aims to provide an early warning system for smoke and poor air quality…

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