Ive played with the Arduino before..
and IMHO.. while its can be FUN.. dont get set on some sort of retail 'product' ("I" feel it just wont happen that way)
bordering on if this should even be expanded on here on Tims forums.. I'll bring up many of the points that have been hashed out everytime this idea gets brought up by someone.
1.) taking a 'generic' platform like the Arduino/RFX..etc..etc will 'never' be as good as something designed for that specific purpose in mind.. (donest mean things cant be good..etc)
a bare bones 'arduino circuit' can be made for like $8 or something.... matter of fact here is one I made myself (etched the board,, designed the 'pcb'...etc) compared to a retail one I found on-line for around $10 or so..
also I think the board can only take up to 5v max..
Attachment 5861
**(mine has a vRegulator on it.. the retail version does not)
Arduino doesnt just give you sound.. you'll need to most likely use someone elses code/library to get .wav files playing.. as well as implement an SD card.. and an 'amp' of some kind...
I have no clue on your experience level.... but speaking for myself.. not something that comes easy.
at this point not only are you just 'testing' a circuit.... where are you on room?.. also you havent even attempted to add in any LED driver.. (much less a 3-4 die RGBX driver addition)
Arduino can adjust the PWM of the pins.. but it can not power high power LEDS.. (only accent leds).... directly
You also wouldnt want to use a 'real' Arduino board in a saber each time.. as they are more a of a development board...
if you go ball bearing / nail & spring route for sensors.. you'll need to spend time on your code.. and figure out your own routine/algo for defining/triggering clash & swings..
if you go accelerometer..same things.. some events are easier than others to track
Good thing about Arduino is there is tons of community support on the internet.
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