A lot of old-school timer setups are too predictable. The same lamp comes on at the same time, stays on for the same length, and switches off the same way every night. That is fine if your goal is only…
Gas is one of the cleanest Home Assistant utility projects because it gives you something genuinely useful without needing cloud services or a paid device ecosystem. Home Assistant supports gas tracking directly in its energy tools, and ESPHome’s pulse_meter component…
Read your home electricity meter’s pulse LED with an ESP32 and ESPHome, then send real-time power and total kWh to Home Assistant. This guide covers optical sensor setup, pulse_meter configuration, conversion from imp/kWh to watts and kWh, Energy dashboard integration,…
Turn a basic pulse-output water meter into a fully local Home Assistant sensor using an ESP32 and ESPHome. This guide shows wiring, pulse_meter setup, live flow rate, total consumption, Energy dashboard integration, daily and monthly usage tracking, and simple leak-detection…
This guide shows how to build a safe ESP32 smart relay (Shelly-style) for Home Assistant using ESPHome (optional MQTT). Includes correct wiring (low-voltage vs mains), relay module selection, GPIO “safe pins”, EMI/noise tips, and example ESPHome YAML for a reliable…
This guide shows how to connect a PMS5003 (PM2.5/PM10) particulate sensor to an ESP32 using UART, configure it in ESPHome, and display air-quality values in Home Assistant (optional MQTT). Includes wiring, safe GPIO choices, recommended update intervals, warm-up/duty cycling tips,…
Quick SummaryThis guide shows how to connect an INA219 or INA226 current/voltage sensor to an ESP32 over I²C, configure it in ESPHome, and monitor battery/solar voltage, current, power and energy in Home Assistant (optional MQTT). Includes wiring, address scanning, calibration…
This guide shows how to wire a DHT22/AM2302 to an ESP32, set it up in ESPHome, and get temperature + humidity into Home Assistant (with optional MQTT). It includes the correct pull-up resistor, safe GPIO choices, recommended update intervals, and…
If you’re reading esp32.co.uk, you probably already have Home Assistant packed with ESPHome sensors, smart relays, and automations that look like a small engineering project. But let’s be totally candid: a smart home is useless if it takes 15 seconds…
If you’re reading esp32.co.uk, you probably already have Home Assistant stuffed with ESPHome sensors, smart relays, and automations that look like a small PhD thesis. But none of that matters if turning a light on takes 10–15 seconds of app-fumbling.…