SparkFun Forums

[NickColonello]

Hi,

I've updated to firmware 2.4.5. I have one line in my MP3TRIGR.INI:
#TRIG 3, 2, 1

I have about 20 MP3 files named 001.MP3 through 020.MP3.

Every time I closed Trig 3 it plays a ramdom file, but it plays the same files in the same sequence every time it powers up. It is as though the same random seed is chosen every time at boot time.

How do I fix this.

[robertsonics]

Yup. As the manual says, it pseudo random - starts with the same seed after a power cycle. You could implement your own random function in another micro, like an Arduino, and play tracks using the serial control protocol.

[NickColonello]

Hi,

I appreciate the quick response. That's what I had guessed. But now I am really stuck. Any chance you can "fix" this e.g. cause the amount of time before the first button press to seed the random generator or something? That would make the random much more useful.

Thanks

[NickColonello]

Hi,

Is the Random function on the WAV trigger the same, or would it generate a different sequence after each restart?

Thanks

[robertsonics]

Unlike the MP3 Trigger's processor, the WAV Trigger's STM32 has a hardware random number generator, so it's different after each power cycle. I just tested it to be sure.