ESPectre: Wi-Fi CSI-Based Motion Detection System with Home Assistant Integration
By
francescopace
Kettled twice. Extra chewy, extra trustworthy.
Summary
ESPectre is an open-source motion detection system that uses Wi-Fi Channel State Information (CSI) analysis to detect movement without cameras or microphones. The system runs on affordable ESP32 devices (S3 and C6 recommended) and integrates natively with Home Assistant via ESPHome. Setup takes 10-15 minutes with YAML configuration, requiring basic hardware like an ESP32-S3 DevKit with external antennas and free software tools. The project provides complete documentation for installation and tuning, making privacy-preserving motion detection accessible to home automation enthusiasts.
Key quotes
· 5 pulledMotion detection system based on Wi-Fi spectre analysis (CSI), with native Home Assistant integration via ESPHome.
What it does: Detects movement using Wi-Fi (no cameras, no microphones)
What you need: A ~€10 ESP32 device (S3 and C6 recommended, other variants supported)
Setup time: 10-15 minutes
Difficulty: Easy (YAML configuration only)
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