ESPectre – Motion detection based on Wi-Fi spectre analysis
Hi everyone, I'm the author of ESPectre. This is an open-source (GPLv3) project that uses Wi-Fi signal analysis to detect motion using CSI data, and it has already garnered almost 2,000 stars in two weeks. Key technical details: - The system does NOT use Machine Learning, it relies purely on Math. — Runs in real-time on a super affordable chip like the ESP32. - It integrates seamlessly with Home Assistant via MQTT.
ESPectre – Motion detection based on Wi-Fi spectre analysis launched on November 17, 2025 with 215 votes, #123 of 9,796 launches that month and more than 95% of that year's launches.
In plain words
ESPectre is an open-source motion detection system that analyzes Wi-Fi signals using CSI data to identify movement without machine learning, relying instead on mathematical analysis. It runs in real-time on affordable microcontrollers like the ESP32 and integrates with Home Assistant via MQTT. The project is designed for users seeking a cost-effective, privacy-conscious alternative to traditional motion sensors for home automation.
written from the facts on this page · September 2026
From the sources
Wi-Fi CSI motion sensing for ESP32. C++ SDK, ESPHome, Native, and Matter frontends, browser tools, and a CLI for the full device lifecycle. GPLv3 and commercial licensing. - francescopace/espectre
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