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1 year, 10 months ago via answers.hackaday.com

Toy with selectable sounds

I have an idea that I would like to put into play, and I need some ideas.

I have the idea of making a toy with selectable sounds (for example, press the hands noise "1" is made, press the feet noise "2" is made. You get the idea).

I had the idea of doing one of two things.

Either using a USB memory stick for play back, or using a cheap nasty MP3 player.

Either which way, I know I need to do a mod.

I need to know if there is a way to select individual memory address's from these devices to play each sound on it's own button (rather than one by one, like the forward button on a CD/MP3 player).

I think the MP3 player is a good idea for 2 reasons. One, it's a memory stick anyway, making it easy to store the pre-recorded voices and sounds, and two, it has an analog to digital decoder already build in, meaning I don't need another circuit to convert the MP3 player to audio.

I already have the amplifier circuit figured out, so I don't need that.

I would like to do it using some kind of basic Logic circuit, but I have feeling that it may not be an option. PIC is not an option as I don't have a programmer.

If anyone else has a better idea, I would welcome ideas!
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zzzomb | 1 year, 10 months ago
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I agree with adamj, in that reverse engineering is going to be more trouble than it's worth. There are a variety of premade modules you can purchase to play sounds off memory cards.
Using Arduino:
http://www.ladyada.net/make/waveshield/

Able to play specific tracks without a microcontroller:
http://www.sparkfun.com/commerce/product_info.php?products_id=9715
http://www.scary-terry.com/dsr/dsr2.htm

There are plenty of other modules around, but there are none that are cheap. Personally I would go with a small handful of these:
http://www.dealextreme.com/details.dx/sku.30741

Wire one up directly to each button. No further circuit required.

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adamj | 1 year, 10 months ago
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If by "basic Logic circuit" you mean something like the 74xx series, that's really not feasible. A microcontroller is the best route, and you can find decent, cheap programmers. You'd end up doing a lot more work trying to reverse engineer the MP3 player than if you just created/bought an existing reference design and modified that to your needs.

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soundhound | 1 year, 10 months ago Report

What would you suggest?

I only need about 4 to 5 audio triggers.

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