Connect an MH-RD rain sensor to ESP32 with safe 3.3 V wiring, current ESPHome YAML, calibration and Home Assistant dashboard cards.

Connect one or more DS18B20 sensors to an ESP8266 with the current 1-Wire bus, a 4.7 kΩ resistor, ESPHome and Home Assistant.

Measure distance with an HC-SR04 and ESP8266 using a safe Echo divider, current ESPHome YAML and native Home Assistant integration.

Configure a four-channel ESPHome relay module with suitable ESP32 GPIOs, low-voltage wiring, current YAML, Home Assistant, and safe startup tests.

Build an educational MQ-3 alcohol-vapor detector with safe ESP8266 wiring, current ESPHome code and Home Assistant history. It is not a certified breathalyzer.

This smart ventilation assistant compares indoor and outdoor temperature and humidity, then recommends when to open, close, wait, or use a fan. Download the complete package and adapt it with ChatGPT or Codex.

Learn how to watch live TV on your Fire TV without an antenna in 2026. Discover the best free apps, step-by-step installation guides, and top streaming methods.