Lap Timer

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OpenTX Lua Telemetry Script



  • Displays elapsed time, lap number and lap time.
  • Plays a beep each time a lap is recorded.
  • Speaks the lap number 1st, 2nd and so on till the 16th lap.
  • Speaks the lap time in minutes and seconds. The seconds are rounded to the nearest integer.
  • Beyond 16 laps the beep and speaking of the lap time continues as before however the lap number is no longer spoken.


File Locations

  • Place the script file of the Tx SD Card
  • Place the accompanying sound files in


  • If you have no experience using Telemetry scripts please read Getting Started.
  • Open the .lua file in a plain text editor to review and change the default settings.

Comments, Questions & Help