# francescopace/espectre

ESPectre - Motion detection system based on Wi-Fi spectre analysis (CSI), with Home Assistant integration.

Repository: https://github.com/francescopace/espectre
Canonical: https://ross.abutalabs.com/products/espectre
Homepage: https://espectre.dev
Language: Python
License: GPL-3.0
License Family: copyleft
Topics: csi, home-assistant, wifi, wifi-sensing, esp-32, espectre, diy, motion-detection
Last push: 2026-08-26T14:37:37+00:00

## Health v2 (maintenance only)
Score: 78/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 99, release rhythm 84, longevity 22
- inputs: {"age_days": 311, "days_push": 7, "days_rel": 104, "gap_med": 8, "n_releases_24m": 14}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 9151, forks 685 (observed 2026-08-28T04:10:28.596791+00:00)

## What it is
ESPectre is an open-source motion detection system that analyzes Wi-Fi Channel State Information (CSI) on ESP32 devices to detect movement without cameras or microphones. It ships as an ESPHome component with native Home Assistant integration, plus a Python/MicroPython research platform for algorithm development.

## Use cases
- detect motion at home using Wi-Fi signals instead of cameras
- build a privacy-friendly presence sensor with an ESP32 and Home Assistant
- detect movement through walls without PIR sensors
- automate lights or alarms when someone enters a room
- experiment with Wi-Fi CSI sensing and signal processing algorithms
- replace camera-based security sensors for GDPR-friendly monitoring

## When to choose
- you want camera-free, microphone-free motion detection that works through walls
- you already run Home Assistant with ESPHome and have a 2.4GHz Wi-Fi router
- you want a cheap (~€10 ESP32) DIY presence sensor with strong privacy guarantees
- you are a researcher prototyping Wi-Fi CSI sensing algorithms in Python

## When to avoid
- you need a plug-and-play commercial product with no YAML configuration
- your router or ESP32 variant does not support CSI extraction
- you require precise location tracking rather than binary motion/presence detection
- you need a battery-powered sensor, since CSI analysis favors mains-powered devices

## Facets
- artifact type: application
- maturity: active
- function: monitoring, machine-learning, embedded, sdk
- domain: iot, privacy, hardware
- platform: iot, python
- tags: wifi-sensing, csi, motion-detection, presence-detection, diy, smart-home, privacy-first, through-wall-detection, automation, esphome, micropython

## Member repositories
- francescopace/espectre (main) score 78

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:10:28.596791+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T17:23:24.157039+00:00, confidence not recorded.
  - readme: https://github.com/francescopace/espectre (fetched 2026-08-28T04:10:28.596791+00:00, sha aefde6ff3bf4)
  - homepage: https://espectre.dev (fetched 2026-08-29T08:23:30.996322+00:00, sha f5435477cee2)
- Data as of 2026-08-30T08:39:29.467469+00:00.