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Esp32.co.uk
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  • Home Assistant Integration
  • Getting Started
    • ESP32 Boards & Modules
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Esp32.co.uk
  • Home Assistant Integration

ESP32 Water Leak Sensor with Home Assistant (ESPHome & MQTT) – Complete 2026 Guide

Water leak sensors can prevent serious damage from leaking pipes, washing machines, dishwashers, boilers, and under-sink plumbing.With an ESP32 and a simple water leak probe, it is easy to build a low-cost, fast, and fully local leak detection system that…

  • panakos
  • 28 November 2025
  • Home Assistant Integration

ESP32 Motion + Light Sensor (PIR + LDR) with Home Assistant – ESPHome & MQTT Guide

A motion sensor that only turns lights on when it’s dark is one of the most useful smart home automations.By combining a PIR motion sensor with a simple LDR (light-dependent resistor) and an ESP32, it’s easy to build a local,…

  • panakos
  • 27 November 2025
  • Home Assistant Integration

ESP32 + SGP40 VOC Sensor with Home Assistant (ESPHome & MQTT) – Complete 2026 Guide

Indoor air quality is not just about CO₂. Volatile organic compounds (VOCs) from cleaning products, furniture, paints, cooking, and people can significantly affect comfort and health. The SGP40 is a modern VOC sensor designed specifically for indoor air quality applications,…

  • panakos
  • 27 November 2025
  • Home Assistant Integration

ESP32 HC-SR501 / AM312 PIR + LDR Light Sensor (ESPHome) for Home Assistant – Complete 2026 Guide

Combining a PIR motion sensor with an LDR light sensor is one of the most flexible ways to create intelligent room automation.With this setup, lights can automatically turn on only when the room is dark and motion is detected —…

  • panakos
  • 26 November 2025
  • Home Assistant Integration

ESP32 SGP40 VOC Sensor with Home Assistant (ESPHome + MQTT) – Complete 2026 Guide

Indoor air quality (IAQ) is influenced not only by CO₂ and humidity, but also by volatile organic compounds (VOCs) such as cooking fumes, cleaning chemicals, paints, perfumes, and off-gassing from furniture.The SGP40 is a high-quality VOC sensor from Sensirion that…

  • panakos
  • 26 November 2025
  • Home Assistant Integration

ESP32 PWM Fan Speed Control (5–12V DC) with Home Assistant – Complete 2026 Guide

Controlling a DC fan using PWM (Pulse Width Modulation) is an easy and cost-effective way to cool network cabinets, 3D printer enclosures, AV racks, routers, amplifiers, or any electronics that require temperature-activated airflow. This guide explains how to use an…

  • panakos
  • 24 November 2025
  • Home Assistant Integration

ESP32 Reed Switch Door/Window Sensor for Home Assistant (ESPHome & MQTT) – Complete 2026 Guide

A reed switch is one of the simplest and most reliable ways to detect when a door or window opens. When combined with an ESP32, it becomes a fast, local, battery-free, and cloud-free door sensor that integrates perfectly with Home…

  • panakos
  • 24 November 2025
  • Home Assistant Integration

ESP32 CO₂ Monitoring with SCD30 & SCD41 (ESPHome & MQTT) – Complete 2026 Guide

Monitoring indoor CO₂ levels is one of the most effective ways to track air quality, improve ventilation, and maintain a healthy indoor environment.The SCD30 and SCD41 are two of the best consumer-grade CO₂ sensors, offering accurate measurements and excellent long-term…

  • panakos
  • 24 November 2025
  • Home Assistant Integration

ESP32 Bluetooth Proxy Home Assistant – 2026 Guide

The ESP32 Bluetooth Proxy solves this problem by extending Home Assistant’s Bluetooth range using inexpensive ESP32 boards placed around the home. Bluetooth Low Energy (BLE) sensors such as the Xiaomi Mi Temperature, Inkbird, Switchbot, and many others are extremely popular…

  • panakos
  • 24 November 2025
  • Home Assistant Integration

ESP32 PIR Motion Sensor with Home Assistant (ESPHome & MQTT) – Complete 2026 Guide

Passive Infrared (PIR) motion sensors are one of the simplest and most effective ways to detect motion in a room. Combined with an ESP32, they provide extremely fast, local, cloud-free motion detection that integrates perfectly with Home Assistant. This guide…

  • panakos
  • 20 November 2025
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