Request Assistance

[DOUG888]

Hi...not sure if you are still active with this project, but here goes....
I am using the Sketch in a pot only application and have successfully removed all but the necessary script.
I have included a second sound file for Steam, all this works well as long as i make the selection at the beginning of the sketch.

that all works, the challenge i have is i wish to add a Hiss.h file that is called for when the loco is stationary, ie: currentThrottle<20;
when the throttle is below this mark all i get is static, when i get the throttle above 20 the normal sound returns, there must be a variable i have missed resetting, i have tried all i can see,

would you please have a look at the files attached and point me in the right direction.
thanks
Doug
Files.zip

[X3msnake]

Skimming trough your code I see you are using 1024 values, the pwm only accepts 255
Maybe it is that you can use the MAP command to map the 16bit value to a 8bit one
https://www.arduino.cc/en/Reference/Map