The default voice countdown caller of OpenTX 2.1 works quite well for FxJ thermal duration training and competition sessions. However, sometimes more frequent calling towards the end of the working time might be desired. This Lua script helps you to add calls wherever you want.
The default Jeti timer config announces only 10 sec intervals between 1 min and 10 seconds remaining. Replace the /Config/TimerV.jsn file in your transmitter with the one attached in the zip-file, and also copy the .wav -files to /Audio/en/ and restart the transmitter. Now the timer announces also 55, 45, 35, 25 and 15 seconds.
You can copy the files needed here (mouse button 2 –> save as…)