Hey people please be kind as I am guessing this has been covered but can't find the answers I am looking for.
I see projects like reprap and think that would be awesome if faster. After a quick look at the motors used I doubt its that so have to assume its the micro used.
the only question here is why can't I use the pi instead of the arduino (off course a new shield will have to be made)?
I have seen things like real time etc but need this explained to me. could I hook up a RTC to make the timing better?
If there aren't enouh pins can't I use a shift register? what am I missin that makes the Pi not a very awesome replacement (other than I can't find a complete guide on how to do it) for the arduino in this case?