[sdiy] request for help re arduino module pcb

[Jason Proctor]

>>also i want to use a regular (or hardier) Arduino so that we don't 
>>build in tight limitations before the thing even ships. the current 
>>design maxes out the 168, though there's possible analogue out 
>>expansion possibilities using a different DAC.
>>
>How about using a small network of I2C DACs?

because the TLV5618 can be easily upgraded for more channels with 
minimal changes to my existing SPI code :-)

>Further, what makes an arduino an arduino is the boot-loader and 
>libraries.  It uses avr-gcc and avr-libc like anybody developing for 
>AVR with C does.  You can flash the bootloader on a suitable chip 
>easily, and the chip can then be dismounted from it's carrier board 
>as required.

the use case that makes this module appeal outside Ard gurus is that 
users can reasonably easily download a sketch and upload it. if users 
had to have another programmer and deal with uninstalling the chip 
etc, the vast majority wouldn't bother.

built-in USB is great, trust me.