specialized-turbo 0.6.1

Python library for communicating with Specialized Turbo e-bikes over Bluetooth Low Energy

specialized-turbo

Python library for talking to Specialized Turbo e-bikes (Vado, Levo, Creo) over Bluetooth Low Energy. Reads speed, power, cadence, battery, motor temp, odometer, assist level, range. Can also write settings like assist level and acceleration.

Async, built on bleak. Includes a CLI. Protocol docs in docs/protocol.md.

Installation

pip install specialized-turbo

Quick start

Stream telemetry

import asyncio
from specialized_turbo import SpecializedConnection, TelemetryMonitor

async def main():
    async with SpecializedConnection("DC:DD:BB:4A:D6:55", pin="946166") as conn:
        monitor = TelemetryMonitor(conn)
        await monitor.start()

        async for msg in monitor.stream():
            print(f"{msg.field_name} = {msg.converted_value} {msg.unit}")

asyncio.run(main())

Read the snapshot

async with SpecializedConnection("DC:DD:BB:4A:D6:55", pin="946166") as conn:
    monitor = TelemetryMonitor(conn)
    await monitor.start()
    await asyncio.sleep(5)

    snap = monitor.snapshot
    print(f"Speed: {snap.motor.speed_kmh} km/h")
    print(f"Battery: {snap.battery.charge_pct}%")
    print(f"Power: {snap.motor.rider_power_w} W (rider) + {snap.motor.motor_power_w} W (motor)")
    print(f"Cadence: {snap.motor.cadence_rpm} RPM")
    print(f"Assist: {snap.motor.assist_level}")

Query a single value

from specialized_turbo import SpecializedConnection, Sender, BatteryChannel

async with SpecializedConnection("DC:DD:BB:4A:D6:55", pin="946166") as conn:
    msg = await conn.request_value(Sender.BATTERY, BatteryChannel.CHARGE_PERCENT)
    print(f"Battery: {msg.converted_value}%")

Write commands

async with SpecializedConnection("DC:DD:BB:4A:D6:55", pin="946166") as conn:
    await conn.set_assist_level(2)          # TRAIL
    await conn.set_acceleration(50.0)       # 50%
    await conn.set_shuttle(25)
    await conn.set_assist_percentage(0, 35) # ECO = 35%

CLI

Scan for bikes:

specialized-turbo scan
specialized-turbo scan --timeout 15

Stream telemetry:

specialized-turbo telemetry DC:DD:BB:4A:D6:55 --pin 946166
specialized-turbo telemetry DC:DD:BB:4A:D6:55 --pin 946166 --format json
specialized-turbo telemetry DC:DD:BB:4A:D6:55 --pin 946166 --duration 30

Read a single value:

specialized-turbo read list                                             # show available fields
specialized-turbo read battery_charge_percent DC:DD:BB:4A:D6:55 --pin 946166
specialized-turbo read speed DC:DD:BB:4A:D6:55 --pin 946166 --format json

Write a value:

specialized-turbo write list                                            # show writable fields
specialized-turbo write assist_level 2 DC:DD:BB:4A:D6:55 --pin 946166  # set to TRAIL
specialized-turbo write acceleration 50 DC:DD:BB:4A:D6:55 --pin 946166 # 50% sensitivity

Dump GATT services (debugging):

specialized-turbo services DC:DD:BB:4A:D6:55 --pin 946166

Capture complete TCX writes and notifications for protocol debugging:

specialized-turbo capture DC:DD:BB:4A:D6:55 --duration 60 > tcx-capture.tsv

Available fields

Field	Unit	Writable	Description
battery_capacity_wh	Wh		Total battery capacity
battery_remaining_wh	Wh		Remaining energy
battery_health	%		Battery health
battery_temp	°C		Battery temperature
battery_charge_cycles	cycles		Number of charge cycles
battery_voltage	V		Battery voltage
battery_current	A		Battery current draw
battery_charge_percent	%		State of charge
rider_power	W		Rider pedal power
cadence	RPM		Pedaling cadence
speed	km/h		Current speed
odometer	km		Total distance
assist_level	--	yes	OFF / ECO / TRAIL / TURBO
motor_temp	°C		Motor temperature
motor_power	W		Electric motor power
peak_assist	%		ECO / TRAIL / TURBO percentages
shuttle	--	yes	Shuttle mode value (0-100)
wheel_circumference	mm	yes	Wheel circumference setting
assist_lev1_pct	%	yes	ECO assist percentage
assist_lev2_pct	%	yes	TRAIL assist percentage
assist_lev3_pct	%	yes	TURBO assist percentage
fake_channel	--		Bit-coded internal channel
acceleration	%	yes	Acceleration sensitivity

TCX2+ bikes have additional fields (range, altitude, gradient, calories, system temperature, and more). See docs/protocol.md for the full list.

Protocol support

Four protocol generations exist:

Protocol	Message format	Encryption
TCU1	[sender][channel][data]	None
TCX2	2-byte parameter ID + CRC-16	Optional AES-128-CTR
TCX3	Same as TCX2	Optional AES-128-CTR
TCX4	Same as TCX2	Optional AES-128-CTR

TCX2/3/4 share one wire format and differ only in which parameters the bike supports. The BLEProfile enum (TCU1 / TCX) controls which GATT UUIDs to use.

See docs/protocol.md for the full spec.

Pairing

The bike needs a 6-digit PIN for BLE pairing, shown on its TCU screen. Pass it via --pin (CLI) or pin= (Python).

On Windows, bleak's WinRT backend can handle passkey pairing programmatically. If that doesn't work, pair through Windows Bluetooth Settings first, then connect without --pin.

Some newer bikes use numeric comparison instead of passkey entry. On those, pair through your OS Bluetooth settings first.

Development

uv sync --extra dev
uv run pytest

License

MIT