A fully local smart thermostat from an ESP32, BME280 sensor, and relay, run by ESPHome and Home Assistant. No cloud, no subscription, under $30.
Smart Home
Real-world smart home builds with Home Assistant, sensors, and integrations that survive past the honeymoon period.
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ESP32 boards for ESPHome: radio-first picks, deep-sleep tested
ESP32 boards for ESPHome compared by deep-sleep current and radio fit: pick C6 for Thread/Matter, H2 for Zigbee, S3 for BLE proxies in 2026.
Sub-$20 Zigbee sensors that stay on the Home Assistant mesh
Best Zigbee sensors under $20 for Home Assistant: real 2-year battery life, Zigbee2MQTT and ZHA pairing, and which secretly need the vendor hub.
Zigbee vs Z-Wave vs Matter vs Thread: what Reddit says in 2026
Zigbee, Z-Wave, Matter, and Thread compared in 2026 through aggregated Reddit sentiment: real upvotes, hands-on verdicts, and who each one wins.
Multi-sensor weather station with ESP32 under $100
Build a sub-$100 ESP32 weather station with wind, rain, UV, and pressure sensors sending live environmental data to Home Assistant over ESPHome.
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