Attached is a photo of a device used in a toy. When you move the toy at all, a spring wiggles inside of its metal sheath and a sound plays.
Anyone know what kind of IC might be used to store the audio & handle the playback? It must be similar to the kind used in greeting cards. How would one flash the audio file onto it (any special equipment necessary)?
I ask because I keep coming up with ideas that could really benefit from knowing how to do this. For example, I’d like to make 100 of them and put them in a tree so they play a sound when the wind blows. I want each device to be small, low-power, and cheap. If not greeting card components, what other route would work well?
thanks for your advice,