I think this is a great idea. I doubt it would ever take the place of existing comercial boards made by erv and such but for the more daring hobbyist this would be fun.
OK to start we need Power Regulation to control current and voltage. I suggest the LA3405A IC. Here is the Datasheet.
Check out Figure 14 on page 13. Example of using it to power Lux K2 white.
For Sensors we can use the ADXL202E IC. The Datasheet is here. It is a dual-axis accelerometer which can detect motion, tilt and impact.
I am working on finding an IC for sound but I am thinking maybe an MP3 chip....
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