Louviva Bella Protocol

Introduction

The Louviva Bella is a BLE vibrator with 9 modes (0–8 patterns) and a manual control mode. A handshake of some kind is required before commands will work — the official app must connect first; direct connection without it may not work.

BLE Profile

ble_names:
  - "Bella"
services:
  - uuid: "0000aa70-0000-1000-8000-00805f9b34fb"
    characteristics:
      - uuid: "0000aa71-0000-1000-8000-00805f9b34fb"
        properties: [write]
        role: tx
        description: "Mode command"
      - uuid: "0000aa72-0000-1000-8000-00805f9b34fb"
        properties: [write]
        role: tx
        description: "Speed control (manual mode only)"
  - uuid: "0000aa10-0000-1000-8000-00805f9b34fb"
    characteristics:
      - uuid: "0000aa11-0000-1000-8000-00805f9b34fb"
        properties: [read, notify]
        role: rx
        description: "Status read"

Commands

Mode Command (characteristic 0xaa71)

XX B7

XX	Effect
0x00	Off
0x01–0x08	Pattern modes 1–8
0x09	Manual speed control mode

Speed Control (characteristic 0xaa72, manual mode only)

Single byte: 0x00–0xFF

• 0x00 = off
• 0xFF = maximum speed

Notes

• A handshake is required before commands work. If the app connects first, subsequent direct connections may function.
• The nature of the handshake is unknown.

Sources

• GitHub Issue (stpihkal#47)