Is the author reads this, how does the system cope with multiple rooms in the same house, maybe a two or three storeys house?

1. Instead of STA/AP mode on a single ESP32, ESPectre uses the natural traffic between your existing router and an ESP32-S3 in station mode. To ensure a stable, continuous CSI packet rate, I implemented a traffic generator that sends ICMP pings to the gateway at a configurable rate (default: 20 pps). This provides bidirectional traffic (request + reply) that reliably triggers CSI generation, giving you predictable packet timing without relying on ambient network traffic or special sniffing modes.

2. Rather than applying filters directly to raw CSI, ESPectre uses Moving Variance Segmentation (MVS) on unfiltered spatial turbulence (std dev of subcarrier amplitudes).

3. The filters are applied to features, not to the segmentation signal itself. This preserves motion sensitivity while cleaning up the feature data

I found that having a stable transmitter (the router) combined with controlled traffic generation provides more consistent multipath patterns and predictable CSI timing, which makes the segmentation more reliable.

Tommysense creates a sensing mesh between devices, while ESPectre uses your existing Wi-Fi router as the transmitter. As a result, ESPectre needs only one device per area but requires a compatible router with solid 2.4 GHz coverage. The overall goal is similar, but ESPectre is open-source!

- It monitors CSI from that specific node (the one it's associated with)

- If the ESP32 roams to a different mesh node, it will start monitoring CSI from the new node

The system doesn't care about the router's internal mesh topology, it just needs a stable connection to receive CSI data from the associated access point.