Auto shuffle on boot (robertsonics v24)

Other
1

Hello all,

spent countless hours trying to figure this out to no avail.
Praying someone here can help…

I have 60 mp3 files on my SD card.
they’re named:
001.mp3
002.mp3
003.mp3
…and so on….

If i connect TRIG1 to GND and power it up, it plays 001.mp3 upon booting. works fine. no problems.

However, I want to auto shuffle my tracks so upon booting, a random mp3 out of my 60 mp3 files plays. I have asked AI (chatgpt, gemini, etc) and they say put a MP3TRIGR.INI file in there with the following in the file:

#VOLM 20
#RAND 0
#TRIG 18, 2, 0

And connect TRIG18 to GND and boot up.
But this just plays track 18 every time upon booting.

AI also said create MP3TRIG.TXT and put the following in the file:

/A 1
/R

And not to connect anything.
But this doesnt play anything upon booting.

Every time i tell AI that they’re solution doesnt work, it offers a variation of what ive mentioned above. I’ve tried about 50 variations of different config file names, config/text file content, mp3 name formats. Nothing works.

Is what I want even possible?
If yes, please tell me how.

Thank you

2

AI sucks and will lead you astray 90% of the time.

Your answers are in the document linked below.

3

Hi YellowDog.

Thank you for taking the time to respond.

I think I’ve followed the instructions correctly but its still playing the same song upon boot up (so not random).

My MP3TRIGR.INI file has:

#TRIG 18, 2, 0

And I’ve connected TRIG18 to GND prior to giving the board power.
Is this correct?

4

It’s been a while since I played with the MP3 trigger but I think the way the random function works you will always get the same first track but everything after that should be random.

The WAV trigger is totally random if I recall correctly. If you ever need a new sound player I recommend it over the MP3 trigger as it is way more configurable and flexible than the MP3 trigger.

5

Ah man :weary_face:

Spent over a $100 to buy the mp3 trigger and have it FedEx’ed half way around the world and pay import tax under the pretence that it could boot random.

Is there a workaround somehow?

6

All good. Was able to accomplish it by connecting an ESP32.

ChatGPT actually came in clutch.
Would never have been able to figure out what sketch to upload without AI

7

Glad you got it figured out! If you need to make another in the future, go with the WAV trigger, it’s way more configurable and a lot more capable.

2 Likes
8

I see you found another solution. However, you could have made that first audio file a very short, silent one. Then the first file that you actually hear would be a random one.

1 Like
9

Oh my gosh!!!
Love it when people think outside the box.

Think I’m going to do this. No need for the ESP32.
Just make track one a 1-second track of silence.

THANK YOU

1 Like