hey peter --> that's what I was thinking... the FTDI chip consumes real-estate that's not necessary for the project... I know there's small arduino's with that 9mmx9mm chip, 1 on either side of the board and then stuck in a 3d-printed case could do, I can quickly prototype this and secure funding to get a good run. It doesn't actually have to be a dime, could be a nickel, but something on that scale I am trying to avoid the finished item being clunky.
I was thinking a 2 chip solution would do.... that FTDI chip is great if you are always popping a usb interface on to fiddle with it, but for set it and forget it tasks I was thinking save a little bit and just use pin holes and a seperate board with the FTDI on it for programming (one time) purposes.
The thing that worried me is the 24 pwm... I don't want four of these things w/ ftdi chips (that'd be a waste of battery).....
Anyways I noticed the following:
Yes, this page: http://www.arduino.cc/playground/Main/GeneralCodeLibrary
has links to "SoftPWM" and "PWMAllPins" which are solutions for that. I haven't used either one myself, so I can't give any idea of what to expect with them, that means I could make 2 of these chips on a single board work right?
So one chip one either side of the board works... or perhaps this (although I'd need two of them):http://doc.byvac.com/index.php5?title=Product_BV4237