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Small Musical Components

I've got an idea in my head, but there's one part that may unravel the whole thing so I thought there would be no better place to ask than here! I'm wondering if there are any tiny devices that will play a given song (on repeat likely) when power is supplied to the device? If you've ever seen one of those birthday cards that plays music when they open then you have a pretty good idea of what I mean. I'm looking for something that would fit inside of an area about half an inch deep by an inch across. Something like you'd see inside of a music box (except scaled down) - does this sort of thing exist? Much thanks! - JM

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gmjhowe8 years ago
You can get versions of these cards that you record yourseld also.
jkiesel (author) 8 years ago
Oh, wow. That's pretty spot on, whatsisface - many thanks, (especially for the googlin')! The only sort of electronics familiar with are BEAM robotics, so I really like the idea of using the melody chip. But... I need to program a specific song into it so I suppose the PICAXE is probably the most viable alternative. I know absolutely nothing about microcontrollers, though. Would I basically just be "uploading" the song onto the controller?
Rockerx8 years ago
Like with whatsisface's idea of the melody chip could you take one out of a musical card and reprogram it by chance. I have kno idea how you would if the cards even used that type.
whatsisface8 years ago
I've heard of something called a "Melody chip". They look like transistors, and as far as I can tell they're designed with this exact purpose. I don't know much more, google might.
Right, I've researched it a negligable amount, and found this:

http://www.maplin.co.uk/Module.aspx?ModuleNo=2462&doy=13m10&C=SO&U=strat15

You can get them to play lots of preset tunes with only a 1.5v battery and a speaker. If you want to use a custom tune, you probably are best off looking at using a small microcontroller, such as a PICAXE 08M, which even has a "Tune" pin.