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TryFun Yaun Series Protocol

Introduction​

The TryFun Yaun series uses a structured 5-byte BLE command with a checksum. Supported modes include pause, heat, thrust, spin, and pattern playback.

BLE Profile​

ble_names:
  - "TRYFUN-ONE"
services:
  - uuid: "0000ff10-0000-1000-8000-00805f9b34fb"
    characteristics:
      - uuid: "0000fff1-0000-1000-8000-00805f9b34fb"
        properties: [write, notify]
        role: tx/rx
        description: "Command and response endpoint"

Commands​

Command Structure​

AA NN MM VV ZZ

Where:

  • AA = header byte, always 0xAA
  • NN = number of data bytes (0x01 or 0x02)
  • MM = mode byte (see table below)
  • VV = value byte
  • ZZ = checksum: 0xFF - (NN + MM + VV)

Mode Table​

ModeMMVV rangeNotes
Pause0x030x00 restart, 0x01 pause
Heat0x060x01 on, 0x02 off
Thrust0x070x00–0x09 speed
Spin0x080x00–0x09 speed
Pattern0x090x01–0x05

Example Commands​

# Heat on
aa 02 06 01 f9

# Heat off
aa 02 06 00 fa

# Thrust speed 1
aa 02 07 01 f8

# Thrust speed 9
aa 02 07 09 f0

# Spin speed 0 (stop)
aa 02 08 00 f8

# Spin speed 9
aa 02 08 09 ef

# Pause
aa 02 03 00 fd

# Restart
aa 02 03 01 fc

# Pattern 1
aa 02 09 01 f6

# Pattern 5
aa 02 09 05 f2

Notes​

  • Two unknown commands observed from app traffic: aa 01 02 fe and aa 01 04 fc — purpose unknown.
  • No Buttplug Rust implementation found at time of writing.

Sources​