
chrisb66
USA
Asked
— Edited

I purchased a MP3 Trigger for my Wall-e project. After building the trigger, I have connected a speaker, supplied power and it works. But when I connect it to the EZ-B board the trigger does not work. I have played around with the settings but with no luck. Do I need to use some particular naming convention for the MP3 files? This is the last piece to my Wall-e project and everything except this is working. Thanks in advance for your help!
Yes the files do need to be a certain format.
Can you manually cycle through your sounds with the on-board switch?
Are you sending serial commands via the EZ-B or using EZ-Script commands
-> MP3TriggerPlayTrack(D7, 38400, 164) ?
Do you have a pic of your connection to the MP3Trigger from the EZ-B?
Have you configured the init file for the MP3Trigger?
I use one of these boards on my big R2-D2. Once setup they work great.
I can help you through, just need more info.
Kris
When the MP3 trigger is not connected to the EZ-B and I supply power to the device, I am able to cycle through the sounds stored on the trigger. But when I connect it to the EZ-B, I can not get any of the recorded sounds to play. Either by cycling through them with the switch or with through the EZ-B software. I have set up the software to look for the D4 port that I plugged the trigger into and have tried various other settings with no luck. I have tried to plug the trigger into other ports, also with no luck.
Do I have to save the sound files using a specific type of name? Examples of names that I used: beep.mp3, hello.mp3. Is this okay?
Thanks for your help!
Port: D4
Baud Rate: 38400
Thanks for the help!
First take a read through the MP3 Trigger manual. It outlines the basics,
such as what your files need to be named ect.
Linky -> MP3 Trigger Manual
Next, we need to know what your connection from the EZ-B to the MP3 Trigger is.
Can you tell me the exact pin to pin connections you are using?
Have you configured the MP3TRIGR.Ini file to match your baud rate and such?
Are you running the latest firmware on the MP3 Trigger? 2.53?
Also when you connect the EZ-B to the MP3 Trigger, are you powering it from
the EZ-B or External power?
If I remember correctly there is a switch on the MP3 Trigger. Toggle that switch to the other position and try it again.
Here's a 38 watt amp from sparkfun if you want to keep with the same store.
https://www.sparkfun.com/products/9612.
This should be enough power for any speaker you use. 38 watts is 4 ohm so at 8ohm it's 18 watt output.
If you are connecting an external amp please take a look here
http://www.ez-robot.com/Community/Forum/posts.aspx?threadId=1189
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