Amazing stuff!
Am I right in understanding that only a single ESP32 device is needed (plus a router)?
replies(1):
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.
Is the author reads this, how does the system cope with multiple rooms in the same house, maybe a two or three storeys house?
You need one sensor for each area you want to monitor independently. With devices more capable than the ESP32‑S3, the coverage would likely be greater.
The ESP32‑C6, in particular, offers significantly better performance. Check out this comparison video from Espressif: https://www.youtube.com/watch?v=JjdpzM6zVJ8
That said, ESP32 boards are very inexpensive, you can find them online for around €1 or even less.
Regarding the chip recommendation, it’s a classic trade-off:
ESP32-S3: This is what I mainly recommend today. It gives you more raw processing power (dual-core), which is great for managing the OS, MQTT, and the CSI analysis without hiccups.
ESP32-C6: I just ordered a C6 myself to run extensive tests! The C6 might have a superior quality Wi-Fi module and better internal CSI extraction capabilities due to hardware improvements.