TELEMETRY

BYB Telemetry is a complete, ready-to-use data acquisition system for high-performance applications. Every kit is built from the same parts: the same acquisition unit, the same sensor bodies, the same software. What changes from one kit to the next is how many and which sensors it carries — set out in Kit configurations.

Both units record suspension movement and vehicle dynamics with a built-in IMU (3-axis accelerometer and 3-axis gyroscope), store runs on internal memory and transfer them over Wi-Fi. The V3 Pro adds more connectors, configurable channels and the features that depend on them.

Which configuration you need depends on how many suspensions the vehicle has. Two suspensions — one front, one rear — is the base configuration; each additional suspension adds one sensor and one mounting kit. Everything else in the kit stays the same.

The V3 has two sensor connectors and therefore covers the base configuration only. Three or four suspension sensors, or any extra sensor — brakes, speed, remote accelerometers — require a V3 Pro.

Choose the sensor stroke from the travel of the suspension it measures, not from the vehicle it is fitted to. Four standard strokes cover almost every vehicle; anything else is made to order.

What a sensor has to match is the suspension it measures — its travel, and the space around it. The only difference from one sensor to the next is stroke and body diameter; the strokes and the kits built from them are in Kit configurations.

The GPS antenna records position, speed over ground and the shape of the track, and is the same part in every configuration. It is what places your data on the map, so a channel trace can be read against the section of track that produced it.

Brake and speed data unlock features in the software and app — you can see how the rider brakes, and find the exact sections of track where time is won or lost. Both sensors read a magnet, so nothing hydraulic is opened and nothing is spliced.

The acquisition unit ships with a set of plastic mountings for a frame or chassis tube. It can also be mounted anywhere on the vehicle through the four M3 threaded holes underneath the unit. Custom mountings can be 3D printed on request.

The GPS antenna mounts with a single cable tie. Install it where it has a clear view of the sky.

The suspension sensors install with a complete set of steel and plastic mountings, compatible with every suspension type: double crown, single crown, air or spring. Two of the available sets are shown below.

If the supplied mountings do not suit your vehicle or suspension, check the 3D printable mounts catalogue for a compatible sensor bracket or acquisition unit holder. Download the free STL files with a BYB Tech account, check the model’s stated compatibility before printing, then verify clearance through the full suspension travel — Suspension sensors. If no suitable model is listed, contact BYB Tech before fitting the sensor.

Each suspension sensor spans the moving and the fixed part of one suspension, held by a bracket at each end. Fit one sensor at a time.

1. 01
   Check the sensor stroke covers the full travel of the suspension it will measure.A sensor shorter than the travel is destroyed by the first hard hit — see Kit configurations.
2. 02
   Choose a position where the sensor runs clear of the tyre, the linkage and anything that could strike it.
3. 03
   Fit one bracket to the moving part and one to the fixed part, using the mounting kit for that suspension.
4. 04
   Attach the sensor to both brackets through the self-aligning joints.In tight spaces, remove the upper rod-end joint and its grub screw to get the sensor in.
5. 05
   Set the sensor slightly retracted — 2 to 3 mm from fully extended — before you tighten anything.Never fit a sensor fully extended.
6. 06
   Cycle the suspension by hand through its full travel.The shaft must slide freely, without force and without twisting.The sensor must not reach the end of its own stroke before the suspension reaches the end of its travel.The carbon cover must not touch the frame, the chassis or the mountings.
7. 07
   Refit the carbon cover if it was removed.

The sensor reads a magnet on the brake lever. The sensing element sits at the end of the sensor opposite the cable, so that end is what the magnet must face.

1. 01
   Fit the sensor beside the brake lever with a thin cable tie, where it cannot interfere with the rider.Do not overtighten the cable tie — it may damage the sensor.
2. 02
   Fit the magnet to the lever with its south pole toward the sensor, so that it meets the end of the sensor face-on, sharing one axis with it.Never the cable end, never the flank of the body.The magnet carries no pole marking: with the unit on and the sensor connected, the correct side is the one that lights the sensor LED. If it stays off, turn the magnet 180° and refit.
3. 03
   Set the gap as small as the lever travel allows, without the magnet touching the sensor.With the lever released the LED is off; pulling the lever turns it on.

The analog sensors mount exactly like the digital ones. They report lever movement rather than only whether the lever is pulled.

1. 01
   Fit sensor and magnet as for the digital sensors: beside the lever with a thin cable tie, the magnet south pole toward the sensor, facing the end opposite the cable and sharing one axis with it.Do not overtighten the cable tie — it may damage the sensor.The magnet carries no pole marking: with the unit on and the sensor connected, the correct side is the one that lights the sensor LED. If it stays dark through the whole lever travel, turn the magnet 180° and refit.
2. 02
   Set the gap as small as the lever travel allows, without the magnet touching the sensor.Correct installation: with the lever fully extended the LED is off, and it brightens gradually through the travel to full brightness with the lever fully pulled.

The speed sensor reads a magnet fitted to the wheel, once per revolution.

1. 01
   Fit the sensor with a cable tie to a fixed part of the suspension or chassis, close to the wheel.Do not overtighten the cable tie.
2. 02
   Fit the magnet to the wheel — spokes or disc carrier — with the south pole facing the sensor head.
3. 03
   Set both sensor and magnet as close to the hub as the parts allow, and the gap between them as small as possible.
4. 04
   Check detection before riding: with the unit powered on, turn the wheel.The sensor LED must light up each time the magnet passes. If it does not, close the gap or turn the magnet over.

Install the GPS antenna with the dedicated mount and a couple of cable ties, as high on the vehicle as you can and clear of obstructions — a top tube, a tank bracket or a roof surface all work.

Install the acquisition unit on the frame or chassis with the supplied plastic mountings, or design your own around the four M3 threaded holes on the bottom of the unit.

The acquisition unit has one GPS connector and either 2 or 5 sensor connectors. BYB Telemetry follows a fixed colour scheme, used on the connectors and inside the software and app alike. The channel colours can be changed in the software settings if you prefer another scheme. Connect the sensors according to the selected mode. Each connector has a colour and an assigned position — the layout for both units is in Using the unit.

The unit has two buttons — power and run — and everything is done with a press or a hold. Both buttons and all three LEDs are on the side face, in the same places on either unit.

Either button wakes a switched-off unit; use Power for normal startup.

The V3 has two sensor connectors and the GPS connector, so it carries two suspension sensors and the antenna. The mapping is fixed: connector 1 on the left, connector 2 on the right, GPS SMA in the middle.

The V3 Pro has five sensor connectors and the GPS connector. The five are a shared pool, mapped as you need them: any combination of suspension, speed, brake and custom sensors, up to five in all. Each connector is numbered and dynamically mapped, so the unit follows your setup rather than the other way round.

Standard configuration:

To change it, connect to the unit from the app or the PC software, open the device configuration and assign each connector to the sensor you have installed.

Auto pause stops sampling when the vehicle is not moving, so a run does not fill up with the time spent standing between runs.

Network name

BYB-Telemetry

Password

bybtelemetry

1. 01
   Power on the unit and stop any acquisition in progress.
2. 02
   Hold Run until the run LED starts blinking blue rapidly, then release — Buttons and LEDs.
3. 03
   On your phone or computer, look for the Wi-Fi network BYB-Telemetry in the list.
4. 04
   Connect using the password above (bybtelemetry) — all lower case, one word, no spaces.
5. 05
   Your device may report "Connected" or "Connected without internet" — both are normal.
6. 06
   When configuration or downloading is complete, press and release Run to disconnect. Leaving connection mode switches the unit off; power it on again before recording — Buttons and LEDs.

The mode tells the software and app which data to expect and which charts to build. Select it before you start an acquisition, and connect the sensors to match it.

Speed and brake channels are recorded alongside the suspension channels in every mode except OPEN, where you assign all five channels yourself.

OPEN mode is for custom sensors. All analog channels CH1 to CH5 are available and you do not declare what is connected — keeping track of that is your responsibility. Runs recorded in OPEN mode are saved as .bybOpen and can only be opened, and converted to .csv, with the BYB Telemetry software.

Read and change the unit's settings while connected over Wi-Fi. Changes in Config and Sensors reach the unit when you press "Apply". Rider and vehicle configuration uses "Send to device" instead — Send the rider and vehicle to the unit.

The hardware channel and IMU calibration buttons capture their references immediately — Hardware channel calibration and IMU calibration.

Device name

The name assigned to the device. In connection mode it becomes the Wi-Fi network name, e.g. BYB-DeviceName.

BYB mode

Selects the vehicle mode. Connect the sensors according to the mode you select — the modes are listed in BYB modes.

Auto pause

Stops data sampling when the vehicle is not moving. Conditions are in Auto pause.

AP password

The password of the device Wi-Fi network. Default: bybtelemetry.

Sampling rateV3 Pro

The acquisition rate of each channel.

Channel mappingV3 Pro

The assignment between each connector and its sensor. Fully customisable.

Sensor calibrationV3 Pro

Captures the channel zero references on the unit — Hardware channel calibration.

IMU calibrationV3 Pro

Calibrates the built-in IMU — see IMU calibration.

Lap typeV3 Pro

Closed circuit (a loop with a shared start/finish) or open circuit (separate start and finish).

External triggerV3 Pro

Enables trigger reception and declares how many triggers are in use.

External trigger IDV3 Pro

The name of the trigger. It must match the ID of the trigger you are using.

Heart rate sensorV3 Pro

Enables the BLE heart rate sensor.

Power meter sensorV3 Pro

Enables the BLE cycling power meter.

Heart rate / power meter pairingV3 Pro

Starts the pairing procedure for a specific BLE sensor.

Custom codeV3 Pro

A code we assign to a customer for a dedicated feature. Leave it as it is unless we have given you one.

Wipe memory

Wipes every run stored in memory.

Factory reset

Returns the whole device to its factory configuration.

Before recording, check the sensor mounting through the full suspension movement — Installation. Complete the vehicle's sensor stroke, suspension travel, wheel travel and wheel size, then send its configuration to the unit — Send the rider and vehicle to the unit.

To capture channel zeros on the acquisition unit, use Hardware channel calibration. Repeat hardware calibration when a sensor or its mounting moves.

A manual zero on a recorded run is a software correction, not a calibration sent to the acquisition unit. Correcting an existing recording belongs to Calibration of recorded runs.

Hardware channel calibration stores the current analog sensor readings as their zero references on the unit. "Calibrate (zero)" captures every channel at once, so prepare every connected sensor before pressing it. Later recordings carry the stored references; this does not calibrate the IMU.

"Reset calibration" in the "Hardware calibration" card clears the stored channel zeros on the unit. It does not clear the separate IMU reference.

For a custom analog sensor, establish its physical zero before using this command; a stationary reading is not necessarily zero. Ask info@bybtech.it if the reference is unknown.

Correcting a zero on a recorded run does not update the unit. Manual corrections and calibration-source selection belong to Calibration of recorded runs.

The acquisition unit contains a 3-axis accelerometer and a 3-axis gyroscope. All acceleration and gyroscope channels appear in the software and follow the orientation shown below.

The axes belong to the unit, not to the vehicle. Set the mounting directions and capture the stationary IMU reference — IMU calibration. The software uses both to express X as lateral, Y as forward and Z as vertical.

Take IMU calibration with the unit fixed in its final position and the vehicle still on level ground. The unit stores 3 accelerometer and 3 gyroscope reference readings. The software uses them with the mounting directions to align the motion axes and remove the stationary gyro bias.

A tilted mounting is allowed. Gravity identifies vertical, but cannot identify which direction is forward: the mounting directions must also be correct.

"Reset calibration" in this card clears the stored IMU reference on the unit. Take a new reference before recording again. The hardware channel calibration has its own separate setting — Hardware channel calibration.

Calibrating the unit now does not change a run already recorded. Corrections to an existing run belong to Calibration of recorded runs; display references belong to Display units and references.

The Live page streams the sensor readings from the unit while it is connected: the analog channels with their voltage, the accelerometer and gyroscope, and the GPS fix. Use it before a run to check that every sensor is wired and responding — move a suspension, pull a brake lever, turn a wheel, and watch the value follow.

Live also shows SAG: how far the suspension compresses under the rider's weight. "Measure at" offers "Suspension" or "Wheel", with SAG in millimetres and percent.

Wheel SAG uses the leverage curve from the selected vehicle's current setup sheet, or its assigned vehicle curve — Setup sheet. Without a curve, the view uses the stroke-to-wheel-travel ratio; the vehicle data must match the installed suspension.

The V3 Pro connects to commercial BLE heart rate monitors and cycling power meters. Each sensor is paired once; its unique ID is then stored in the device for future sessions.

1. 01
   Activate the sensor — wear the heart rate strap, or move the power meter.
2. 02
   Enable Wi-Fi mode on the BYB Telemetry.
3. 03
   Open the app or software and go to the device configuration menu.
4. 04
   Tap Scan heart rate sensor or Scan cycling power meter.
5. 05
   Wait for pairing to finish — the unique code of the paired sensor is displayed.
6. 06
   Set Heart rate sensor or Power meter sensor to YES before starting a run.

The V3 Pro records lap times from BYB Chrono external triggers placed along the track. Placement, pairing and the trigger’s own settings are in the BYB Chrono manual.

Open lap

The track has a distinct start and finish; entry and exit points are separate.

Closed lap

The track is a loop with a shared start/finish line. The entry and exit laps are automatically excluded from calculations.

External trigger

Pairs Chrono with a trigger for accurate timing independent of GPS reception. Enable reception and declare the number of triggers used.

External trigger ID

The trigger name. Every trigger in use must carry the same ID — four triggers on one track all share it, for example "Trigger-TeamX". Choose a name of your own so it is not shared with another team on the same track. Default: Chrono.

Trigger role

Each trigger can be assigned "Start", "Finish", "Start/Finish" or a numbered split — "Split 1", "Split 2" and so on. Use separate Start and Finish gates for an open lap, Start/Finish for a closed lap, and numbered splits between them. "Automatic" leaves the roles to the order in which the triggers are crossed.

The trigger's button commands and reset procedure belong to the BYB Chrono manual. They are separate from the acquisition unit's controls in Buttons and LEDs.

Where the triggers sit decides whether the lap times are usable. A trigger too close to the start or the stop point fires while the vehicle is still stationary; two triggers too close together interfere with each other. Set the lap type first, then place the triggers to match it.

Open lap

At least two triggers: one about 50 m after the start point, one about 50 m before the stop point. Splits go in between — four triggers give start, two splits and finish.

Closed lap

One trigger at the start/finish line is enough — place it on a clear stretch, as far as possible from intersections, so a pass on another part of the loop cannot cross it. Add splits around the loop to break the lap down.

Intermediate splits

Extra triggers between the first and the last one, more than 100 m from each other. Declare the total number in use in the device configuration.

Order

Place each trigger at the gate matching its assigned role. With "Automatic" roles, gates are worked out from the crossing order — keep the same layout and sequence between runs to compare splits.

Select the rider profile in the software or app before adding a vehicle. Each profile has its own Garage and runs.

Rider profile

The person riding and the profile that should receive the runs.

Vehicle

The vehicle in that rider’s Garage, with its geometry and setup history.

Rider and vehicle on the device

The rider and vehicle sent through Device > Profiles. The unit stores them in each run so downloads go to the right profile and vehicle.

Profile management is covered in the software and app manual. Send the selected rider and vehicle to the unit before recording — Send the rider and vehicle to the unit.

Add the vehicle to the selected rider’s Garage and enter its actual geometry. Sensor stroke, suspension travel, wheel travel and wheel size are needed to interpret the recorded measurements.

Enter geometry for every fitted suspension sensor. Update these Garage values when a part changes the vehicle’s geometry.

Use the vehicle’s "Setup sheet" timeline to log its fitted settings and leverage curve (if any). Date the setup before the run it applies to. Keep using that entry until the settings change.

Creating curves, editing setup history and correcting an earlier run are covered in Leverage, Setup sheets and Calibration of recorded runs in the software and app manual.

The unit needs the correct rider and vehicle before recording. "Load from Garage…" selects what to send; "Send to device" sends it. The unit holds 1 active rider and vehicle configuration.

The unit receives the rider, vehicle and recording geometry. The setup sheet and leverage stay in the software or app — Setup sheet.

Device settings use "Apply" in Config — Device configuration.

Sensor assignments use "Apply" in Sensors. Hardware channel and IMU calibration take effect immediately — Hardware channel calibration and IMU calibration.

Downloaded runs go to the rider profile and vehicle sent to the unit before recording. The software assigns the latest setup dated at or before the run’s start time, including its leverage curve (if any).

Check the rider, vehicle and setup after download. Matching details and corrections are covered in the software and app manual.

If the unit or a sensor moved, repeat its hardware calibration before the next run — IMU calibration and Hardware channel calibration.

Correct an existing run in the software or app — Run assignments. Sending a new configuration or taking a new hardware calibration only affects later recordings.

Before the next run, check the rider and vehicle on the unit and send again if needed — Send the rider and vehicle to the unit.

The app and the PC software show the same Device panel and do the same job: they list what is stored on the unit and pull it onto your phone or computer.

1. 01
   Connect to the unit over Wi-Fi — Connect to your BYB Telemetry.
2. 02
   Open the app or the software.
3. 03
   Open the Device panel — the app opens on it, in the software it is the Device button in the top bar.
4. 04
   Check the header: it names the unit, its firmware and its battery level.
5. 05
   Download the runs.In the app, tap Download files.In the software, tick the runs you want and press Download selected. The "Download into" setting decides the folder — leave it on Auto and runs are filed by rider.
6. 06
   Check the rider, vehicle and setup assigned after the download — Where downloaded runs go.

This manual covers capturing the data and filing it under the right vehicle. Continue with Understanding run data, Comparing runs and Trends in the software and app manual. Interpreting the data for a setup is covered by the online training course at bybtech.it.

1. 01
   Connect to the unit over Wi-Fi — Connect to your BYB Telemetry.
2. 02
   Open the app.
3. 03
   If an update is available, a pop-up appears.
4. 04
   Follow the on-screen instructions to complete the update.

1. 01
   Remove the micro USB protective cap.
2. 02
   Connect the micro USB cable to the port on the unit.
3. 03
   Use only a PC USB port or a phone charger rated 5 V, 1 A.
4. 04
   The charging LED is on while charging and off when the battery is full.
5. 05
   Refit the protective cap before the next ride.

Clean BYB Telemetry gently, with water and a soft cloth.

Switch the unit on a few minutes before the first run and leave it still, with the antenna in the open and a clear view of the sky. A fix normally takes about 5 minutes from cold. The run LED turns solid green when a reliable 3D fix is acquired.

Data logging started before a fix was acquired, so the run holds sensor data but no position. Always wait for the run LED to turn solid green before you press run — red means the GPS is still searching.

Keep Power pressed until the unit reboots, then release — Buttons and LEDs. This force restart only reboots the unit; its settings stay unchanged.

A trace that never reaches full travel, or that flattens at the top or bottom, is nearly always calibration or fitment rather than a fault.

Downloaded runs may be under a different rider profile if another profile is selected or the correct rider and vehicle were not sent to the acquisition unit before the session. Check Home's profile switcher and look in the other profiles, including Guest. Select the correct rider and vehicle, then send them to the unit before the next session — Send the rider and vehicle to the unit.