> ## Documentation Index
> Fetch the complete documentation index at: https://docs.efference.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# System Overview

> Understand the M1 sensing, storage, and connection model

The Efference M1 combines synchronized sensors, onboard compute, persistent
storage, and wired and wireless connections.

## Device components

* Onboard compute running the device services, capture, and encoding
* Camera and inertial sensors on a shared timebase
* Persistent storage for configuration and device-local recording
* USB, Bluetooth LE (BLE), and WiFi interfaces

## Hardware-synchronized data

Video frames and IMU samples share a device timebase. The Efference SDK
preserves those timestamps in live streams and MCAP recordings, so the same
capture API can process live and recorded data.

## Two operating models

<CardGroup cols={2}>
  <Card title="Standalone recording" icon="hard-drive">
    Start a device-local recording, disconnect the host, and retrieve the MCAP
    file later.
  </Card>

  <Card title="Host-connected capture" icon="computer">
    Stream synchronized video and IMU to a Linux host over USB or WiFi/UDP.
  </Card>
</CardGroup>

## Control and data planes

The device separates low-bandwidth control from high-bandwidth sensor data:

| Plane   | Carries                                                        | Available over            |
| ------- | -------------------------------------------------------------- | ------------------------- |
| Control | Identity, configuration, health, WiFi, recordings, and updates | USB or Bluetooth LE (BLE) |
| Data    | Live video and IMU                                             | USB or WiFi/UDP           |