I started testing some alternative MP3 Sound Modules, my goal to get similar functions but at 50% less than the cost of MP3 Trigger ($50 + s/h). This could help people with low budget that want to get into robotics or just wanted to build a low cost robot. I choose these two modules in theory from reading their data sheet should work with EZ-B thru very simple sendserial command already built into EZ-Builder:
This MP3 module im testing and is working very well with EZ-B, it supports 40 MP3 files, 6 outputs:
This MP3 module supports 199 MP3 files and 8 outputs but I can't get it to work because it required baud rate of 4800 which ARC doesn't support but i would like to have it working because it supports 199 MP3 files and have better features than the above module:
However both modules needs an audio amplifier but for the price you can't beat for small to large robot projects that don't need a lot of sound files.
I have already got it working well with my Wall-E project, there is just one problem because the volume reset once power is disconnected so i found a way around that by using a init script at connection to change to max volume and a start up sound. All costs less than half price of MP3 Trigger :).
Here is a rough wired pic using Wall-E own speaker, MP3 module, and a dual 3W amplifier. I will post more details soon but still i would like to be able to use the 199 mp3 module, nice thing is both module output stereo sound and you are not limited to small speakers, just use bigger amp for bigger speakers and blue color matching EZ-B board
More details on wiring and custom scripting coming soon...might make a demo video if i have some free time.
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Just doing a little snooping on Ebay and seen this.
Less then 6 bucks ... WOOT WOOT ... will it work?
Heres more info if needed:
Please send a link if possible to the one you are all talking about.
Best robot building!
and took the R Out from the MP3Trigger into this and the output from this to my LED's. This way I can adjust the power to the LEDs via the op-amp and they light up with the output from the MP3. It works really well.
op amp kit
Seems I'm going backwards, rather than forwards : (
Just installed the AU5032 TF CARD MP3 PLAYER MODULE. Linky
The data sheet says it needs a Logic level TTL voltage converter: Linky
However, this converter seems to be just that, the logic signal and voltage. The "power" to activate the MP3 card requires that you feed another 3.3v source into the line:
So I wired it all up, and it works fine (although you will still need an amp.)
Any ideas on how to power this thing without an external supply?
do you think it will work with ez-b ?
any idea how to hook it up ?