I'm trying to figure out what I need for this project. We're creating an artwork that requires 12 'lanterns', this project will be an artwork that has close relations to colour and music. As different signals are sent through a MIDI interface, the lanterns will light up, one lantern for each note. I can do all the midi stuff through the computer and just send what lantern needs to be light up and at what intensity via processing on the computer and send it across the serial to the Arduino, that's no problem, what is, is the lighting.
Our test lantern has about 5 white LED's in it, the plan is to die the thin paper different colours for each of our lanterns, the problem is cost (and I'm pretty bad at electronics). White LED's cost about $1.10 each so putting 5 white LED's in each lantern, and having 12 lanterns... it adds up pretty quickly.
I don't know how bright they'd be in comparison, but 2.5V Krypton Torch Globe is only $1.75 each, and I might be able to get away with just one in each lantern??.
My power supply is currently a 5V 2A regulated supply and I'm not sure this would be enough, I also have no idea how I'd use this +5V supply to power a 2.5V lamp?? let alone PWM them (would I need a series of MOSFETs?)
Any help would be much appreciated. Thanks,