Im designing a audio board for a slot machine that can play two samples at once! (so its gonna need 2xmp3 decoders and ill merge the audio output)
I started drawing up a schematic for a design i thought of. which was
1xAtmel Atmega328 Micro controller (takes serial commands then transfers bytes from the spi ram to each decoder)
1xSPI dataflash (all mp3 data stored here)
my design has a single usb that i would program the micro controller and download the mp3 data onto the spi dataflash
BUT i came across the VS1000D the other day and this seams to save me ALOT of work as i would not need the micro controller any more + all the firm ware is already written! (i just buy a nandflash + vs1000)
so my second idea is
and merge the audio output like i was going to on my original design
only downside i guess is i would have 2 usb sockets? does it really matter?
im gonna build the thing from scratch and get a board made up so i dont want to just buy 2 pre made mp3 players as that is boring! i want to design an build my own custom 2 channel player for my slot machine
heres a link to my original schematic (its not finished yet, its missing the audio ouput mixing amp n stuff)http://russdx.frankster200.com/slot/Job1.PDF
which route do you guys think i should go down?
any ideas or help much appreciated