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RACELOGIC Support Centre

Brake Temperature Monitoring App

VBOX Touch TTMS App Image.png
This App can be used within the Brake Temperature Monitoring System (BTMS) to provide drivers with a real-time display of the temperature of each brake disc. This provides drivers with an immediate insight into what is happening to their brakes on track; invaluable information for chassis tuning and driver development.

The responsive, colour display offers a visual representation via 64 individual heat maps, as well as live and maximum temperature values.

The app is available to download here, instructions on how to install can be found here.

In order to use this app, you must also purchase the Racelogic Brake Temperature Sensor kit (RLACS272-BRK).

Main Screen

VBOX Touch BTMS Display.png

Sensor Display

The sensor display is split in to four areas representing each brake disc; front left brake disc (top left), front right brake disc (top right), rear left brake disc (bottom left) and rear right brake disc (bottom right). For each brake disc, available information includes a visual concentric heat map temperature representation, live temperature and maximum temperature achieved.

VBOX Touch BTMS Sensor Display.png

Heat Maps

Each sensor measures 16 temperature spots across a brake disc surface. These 16 temperature channels are visually represented by concentric heat maps on the main screen. The colours of the heat maps will blend between Blue, Green, Yellow and Red, with Blue being the minimum temperature and Red being the maximum temperature.

Live Temperature

A live temperature value is displayed on the screen in numerical form for each sensor. Each temperature value displayed on the screen is an average of the 4 most central temperature channels for that particular sensor. If a temperature reading is not being received, '--' will be displayed.

Max Temperature

The BTMS app will store the highest measured temperature from each sensor and display these on the main screen. '--' will be displayed until a temperature reading has been received.

Note: These max temperature values appear greyed out to prevent driver confusion.

The max temperature values are saved after a power cycle and can be reset using the reset button on the main screen footer.


The 4 LEDs at the top of the unit provide visual feedback dependent on what process is being performed:

  • Overheat Temperature: If the Overheat Temperature is met, the LED's, which represent the RL, FL, RR and FR brake discs, will illuminate Red and stay on until the temperature drops below the overheat temperature for 1 second.
  • Screenshot: If a screenshot has been saved successfully, the LEDs will illuminate yellow in sequence from left to right to display the progress of writing to the SD card.

Sats Status

The Satellite Icon displays the current GNSS status. More information on the different GNSS states can be found here.

VBOX Touch No Sats.png Flashing Red - No satellite lock VBOX Touch Sats Lock.png Solid Green - Standalone positional accuracy; Code Diff/SBAS positional accuracy
VBOX Touch Sats Lock RTK Float.png Solid Orange - RTK Float VBOX Touch Sats Lock RTK Fix.png Solid Purple - RTK Fixed

CAN Data

The CAN Data Icon displays the status of the CAN connection between the brake temperature sensors and the brake temperature display. When CAN data is detected, it will display as green VBOX Touch TTMS CAN Good.png. When no CAN data detected, the icon will display as red VBOX Touch TTMS CAN Bad.png.

SD Status

The SD Card Icon displays the status of the recording media. When an SD card has been inserted and has free space, it will display as green VBOX Touch SD OK.png. When no SD card is detected or the media is full, the icon will display as red VBOX Touch SD Not OK.png.

Tapping on the icon when green will manually start or stop logging data, overriding the Configured Logging Strategy.

Logging Status

The Record Icon VBOX Touch Recording Button.png will show when the unit is logging data to the SD card.

IMPORTANT – The SD card shouldn't be removed when the Record Icon is on as you may lose data.


Selecting the Reset Button Reset.png on the bottom of the screen will reset all maximum values.


Selecting the Screenshot Button Screenshot.png will save a full image of what is shown on screen to the inserted SD card. If the screenshot has been saved successfully, the LEDs will illuminate yellow in sequence from left to right to display the progress of writing to the SD card. When screen capture is complete, VBOX Touch will emit an audible confirmation notification. If the screenshot has been saved unsuccessfully, for example no SD card is inserted or the card is full, the SD Card Icon at the top of the screen will flash 3 times and VBOX Touch will emit an audible error notification.

A captured image is saved as a 1.5 MB bitmap image, orientated at 90° to the original screen image, with the prefix 'screenshot'.

IMPORTANT – NEVER remove the SD card when a screenshot is being taken, it could cause the unit to crash!


The Brake Temperature Monitoring System App Settings menu is available by selecting the Settings Button Settings.png on the bottom left of the screen.

There are 2 main App Settings menus available which can be accessed by selecting the Forward Forward Arrow.png and Back Backwards arrow.png arrows on the bottom right of the screen or by swiping the screen left or right. General Settings and Diagnostics Settings menus are also available.

VBOX Touch BTMS Temp Settings.png
Temperature Settings Screen

VBOX Touch BTMS Sensor Settings.png
Sensor Settings Screen

To save the settings and return to the main screen, select the Exit Button Exit Screen.png on the bottom left. All settings are saved after a power cycle.


Temperature Settings

This menu contains minimum, maximum and overheat temperature options.

VBOX Touch BTMS Temp Settings.png

Values are changed by simply pressing the Blue Circle VBOX Touch TTMS Slider Button.png  and sliding it up or down. The Plus VBOX Touch TTMS Plus Button.png and Minus VBOX Touch TTMS Minus Button.png buttons can be used for more accurate temperature value selection.

Min Temp

Allows you to define the minimum temperature value for the heat maps. For example, if a minimum temperature value of 50°C is defined, then any temperature reading of <50°C will appear Blue.

Max Temp

Allows you to define the maximum temperature value for the heat maps. For example, if a maximum temperature value of 500°C is defined, then any temperature >500°C will appear Red.

Overheat Temperature

The Overheat Temperature slider allows you to define the temperature value at which the overheat LEDs are activated. Once activated, they will appear Red and stay on until the temperature drops below the overheat temperature for 1 second. Each LED represents a brake disc as defined below.

VBOX Touch BTMS Overheat LEDs.png

Temperature Units

The temperature units can be changed between Celsius and Fahrenheit. This option will auto scale the numerical temperature values on the temperature settings screen and the main screen.

To change the units, simply press the button next to Temperature Units. The button will display the current selected units.


Sensor Settings

This menu contains sensor number and orientation options.

VBOX Touch BTMS Sensor Settings.png

Settings can be changed by pressing on the corresponding button next to an option. The button will display the currently selected option.

Sensor Number

The user can change which set of heat maps a sensor is assigned to. This is required if the sensors have been installed at the incorrect corner, preventing the need to manually swap the sensors around on the vehicle.

To change which sensor is assigned to which set of heat maps (FL, FR, RL, RR) simply press the small number button to scroll between sensor 1, 2, 3 and 4.


The temperature sensors are mounted on the struts or the hub facing towards the brake disk and can be set as ‘Normal’ or ‘Flipped’ orientations depending on which way round they are positioned

This setting must be configured correctly to ensure the heat maps are in the correct order on the main screen.

To change the orientation setting, simply press the orientation button. The sensor image on the screen will change accordingly and the button will display the current orientation setting.

General Settings

This menu contains units, logging mode and brightness options.

VBOX Touch BTM General Settings.png

  • Speed: Allows you to change the speed units between km/h (default) and mph. Changing the speed units will affect all visual speed parameters on all screens, unit labels will change and all speed values will be automatically recalculated. Tap the button to change the units.
  • Distance: Allows you to change the distance units between metres (default) and feet. Changing the distance units will affect all visual distance parameters on all screens, unit labels will change and all distance values and results will be automatically be recalculated accordingly. Tap the button to change the units.
  • Logging: Allows you to toggle between 2 logging modes, tap the button to change the mode:
    • Continuous: The VBOX Touch will start logging as soon as an SD card is inserted and initialised.
    • Moving (default): The VBOX Touch will start logging as soon as an SD card is inserted and a speed over 0.5 km/h is detected. Logging will pause when speed is less than 0.5 km/h for 3 seconds, and will then recommence recording once speed is greater than 0.5 km/h, appending the same file.

      • Manually pressing the SD Card Icon will manually start and stop recording, irregardless of which logging mode is set.
      • A new data file is created every time the VBOX Touch starts/stops logging, data is not appended to an existing data file.
  • Screen Brightness: You can manually adjust the screen brightness between 5 levels, with 1 being the dimmest and 5 being the brightest setting. An 'Auto' setting is also available which uses the internal ambient light sensor to automatically adjust the screen brightness. In dark conditions, the screen brightness will dim, and in light conditions the screen will brighten. Tap the button to cycle through the available options.
  • LED Brightness: You can manually adjust the LED brightness between 5 levels, with 1 being the dimmest and 5 being the brightest setting (this is extremely bright!) or turn off the LEDs. Tap the button to cycle through the available options, the LEDs will preview the brightness level.
  • System Time/ Date: This displays the current time and date being used by the system.
  • Sync to GPS: This feature will synchronise the internal real time clock (RTC) to GPS time as long as the unit has obtained GPS time (no GPS time is indicated by a red satellite icon), isn't moving and isn't logging. When pressed, a synchronisation progress screen is presented.


The Diagnostics menu is the final screen within the Settings menu, it displays basic GPS receiver and VBOX information.

VBOX Touch TTMS Diagnostics Settings.png

The satellite icon at the top of the screen is the quickest way to determine if the unit has a valid satellite lock. When lock is acquired, it will display as solid green VBOX Touch Sats Lock.png.  When there is no satellite lock, the icon will flash red VBOX Touch No Sats.png.

GPS Information

  • Cold Start: Press this button to perform a cold start on the VBOX Touch. This means the receiver will clear any data currently stored within its internal memory. It may be required to do this when the GPS engine has locked up or the VBOX Touch is struggling to acquire satellite lock.

    When the button has been pressed, the unit will make an audible sound and a ‘PLEASE WAIT’ message will be displayed on the screen which will count down from 3. The number of satellites will then be displayed as '00' and GPS status will show ‘SEARCHING FOR SATELLITES’ until satellite lock has been acquired. It will take approximately 25 – 30 seconds for the unit to reacquire satellite lock.
  • Satellites: Displays how many satellites the receiver is currently using.
    • VBOX Touch RTK units: If using an RTK variant VBOX Touch, there is also a separate satellite constellation count to the right of the satellites number. GPS, GLONASS (GLO), Galileo (GAL) and Beidou (BDS) constellations are displayed. The constellation not selected within the GNSS Selection area within the General Settings menu will be greyed out.
  • GPS Status: This indicates the current GPS lock/RTK status of the unit:  When the unit is searching for a valid satellite lock, ‘SEARCHING FOR SATELLITES’ is displayed. When the GPS receiver has acquired satellite lock, one of the following will be displayed:
    • STANDALONE: Position computed from GNSS only.
    • CODE DIFF: Position computed from assisted SBAS corrections.
    • RTK FLOAT (VBOX Touch RTK only): Position computed from GNSS corrected by RTK. Float means the GNSS receiver is still calculating the integer ambiguity, a small error will be present on the position computation at this time.
    • RTK FIXED (VBOX Touch RTK only): Position computed from GNSS corrected by RTK. Fixed means the integer ambiguity is established and the optimum position correction is applied resulting sub 2 cm relative accuracy in good conditions.

VBOX Information

This section displays the device serial number, firmware version number and hardware version number. This information is useful in the event of troubleshooting a potential issue with the VBOX Touch device.


Depending on the Configured Logging Strategy, the BTMS App will log a standard .vbo data file containing all standard GPS parameters plus all 16 CAN parameters from each sensor, 64 in total.

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