751/752 Bardotka – 8bit MTB TT Plux16

Project version 201.5.10
751/752 Bardotka – 8bit MTB TT Plux16
8bit

Project Information

  • Sound project optimized for MTB TT models with Plux16 connector.
  • The sound project is designed for MX series 8-bit sound decoders.
  • Recommended minimum decoder software version is 40.22.
  • The decoder has a default address of 3.
  • Reset can be performed by setting CV8 = 8.

Function Assignment

Function mapping and CV settings can be modified.

  • F0 Position white lights
    Affected function output: FA0v, FA0r
    Direction dependent
  • F1 Red lights
    Affected function output: FA1, FA2
  • F2 Headlight
    Affected function output: FA3
    Direction dependent, requires F0 to be enabled
  • F3 Shunting mode
    Affected function output: FA0v, FA0r
    • speed range reduced to ½
    • reduces acceleration / braking times to ¼ of CV3 and CV4
    • turns off red lights if enabled
    • turns off headlight if enabled
    • triggers short horn at start
  • F4 Short horn
  • F5 Coasting
    Idle running sound regardless of set speed
  • F6 Engine acceleration to max RPM
    Independent of set speed, even when stationary
  • F7 Long horn
  • F8 Sound on/off
    Engine on/off
  • F9 Cabin lighting
    Affected function output: FA4, FA5
    Direction dependent, turns off when the model starts moving
  • F10 Short whistle
  • F11 Long whistle
  • F12 Uncoupling screw
  • F13 Coupling screw
  • F14 Sanding
  • F15 Dispatcher whistle - new
    Call to readiness
  • F16 Dispatcher whistle - old
    Call to readiness, departure
  • F17 Compressor
  • F18 Sound set switching
    Loaded / unloaded locomotive, when stationary
  • F19 Wheel squealing in curves
  • F20 Station announcement
    R 653
  • F21 Station announcement
    Gemeran Express
  • F22 Station announcement
    REX 1724
  • F23 Station announcement
    REX 17225
  • F24 Station announcement
    Os 5016
  • F25 Station announcement
    Os 5028
  • F26 Sound muting
  • F27 Volume decrease
  • F28 Volume increase

Setting Maximum Speed

We recommend setting the maximum speed using CV57, not CV5. Setting the maximum speed using CV5 may cause changes in the sound range. Acceleration time CV3 and deceleration time CV4 settings are not affected by setting the maximum speed via CV57.

Shunting Mode

In shunting mode all four marker lights are turned on. If you do not need this behaviour, disable it by setting CV37 = 0; enable it again with CV37 = 3. Enabling the mode also turns off the red lights and headlight if they are on. If you do not want this functionality, disable it by setting CV430 = 0 and enable it again with CV430 = 3.

The mode reduces acceleration and braking times to ¼ of the CV3 and CV4 settings. If this behaviour is not desired, disable it by setting CV124 = 144. Full deactivation of acceleration and braking times is possible by setting CV124 = 147.

If the shunting mode functionality itself is not desired, disable it by setting CV124 = 128.

The standard shunting mode value in the project is CV124 = 146.

In shunting mode a short horn sounds at each start. This functionality is handled by a script.

Three conditions must be met for the short horn to sound:

  1. The function itself must be enabled via F3.
  2. The engine sound must be enabled via F8.
  3. The model must start from zero speed.

Setting CV837 = 8 disables this functionality; standard value is CV837 = 0.

F5 Coasting vs F6 Engine to Maximum RPM

If both functions are enabled, coasting takes precedence.

Cabin Lighting

When the driver’s cab lighting is enabled via F9, it automatically turns off as soon as the model starts moving and turns back on when the model stops. For technical reasons1) this behaviour is handled by a script. If you do not need this automation, disable it by setting CV837 = 8; the default value is CV837 = 0.

If you prefer cab lighting that does not switch off when the model moves, set CV43 = 96 and CV837 = 8. To disable this special mode, set CV43 = 0 and CV837 = 0.

1) The default firmware allows either gradual fade-in/out of the function output or turning it off while the model is moving, but not both behaviours at the same time.

Compressor

The project implements two versions of compressor activation, both handled by script:

  1. Random compressor activation, conditional on engine sound being enabled via F8. This is disabled when the compressor is turned on via F17.
  2. Compressor activation via F17. This requires F8 to be enabled and zero speed.

Setting CV837 = 1 disables compressor activation via F17.

Setting CV837 = 2 disables random compressor activation.

Setting CV837 = 3 disables both options; standard setting is CV837 = 0.

Curve Squeal

Curve squeal is handled by script and several conditions must be met for activation:

  1. The function itself must be enabled via F19, and engine sound must be enabled via F8.
  2. The sound will not play at very low speeds; the commanded speed must be above 14 (within range 0–126).
  3. The sound will not play at high speeds; the commanded speed must be below 100 (within range 0–126).

Setting CV837 = 4 disables curve squeal; standard value is CV837 = 0.

Custom Function Mapping

Custom function mapping is available via CV400 – CV428. The project itself does not use it.

Decoder Reset

If you make a mistake while configuring the decoder or get lost in the settings, we recommend performing a decoder reset. Program CV8 = 8 to reset the decoder back to the project defaults.

Basic CV Settings in Project

  • CV3 = 16
  • CV4 = 14
  • CV5 = 1
  • CV6 = 1
  • CV33 = 1
  • CV34 = 2
  • CV35 = 12
  • CV36 = 16
  • CV37 = 3
  • CV38 = 0
  • CV39 = 0
  • CV40 = 0
  • CV41 = 0
  • CV42 = 0
  • CV43 = 0
  • CV44 = 0
  • CV45 = 0
  • CV46 = 0
  • CV57 = 125
  • CV105 = 145
  • CV106 = 5
  • CV124 = 146
  • CV125 = 88
  • CV126 = 88
  • CV127 = 89
  • CV128 = 90
  • CV190 = 3
  • CV191 = 2
  • CV254 = 201
  • CV255 = 5
  • CV256 = 10
  • CV266 = 100
  • CV374 = 5
  • CV339 = 6
  • CV340 = 6
  • CV395 = 130
  • CV396 = 27
  • CV397 = 28
  • CV836 = 0
  • CV837 = 0

Sound Sample Numbers

F4 CV522 23 Short Horn
F7 CV531 22 Long Horn
F10 CV540 42 Short Whistle
F11 CV543 43 Long Whistle
F12 CV546 44 Screw Coupler Down
F13 CV549 45 Screw Coupler Up
F14 CV552 46 Sanding
F15 CV555 47 New Dispatcher Whistle
F16 CV558 48 Old Dispatcher Whistle
F20 CV673 49 Express 653 Announcement
F21 CV676 50 Express Gemeran Announcement
F22 CV679 51 REX1724 Announcement
F23 CV682 52 REX1725 Announcement
F24 CV685 53 Os5016 Announcement
F25 CV688 54 Os5028 Announcement
script 57 Compressor
script 58 Wheel Squealing in Curves

"Script" means that the corresponding sound is used in the script, outside of normal use within CV. The sound number is listed here for possible standalone use of the sound when the script is disabled.