I would probably add macros called writeAngle()  and readAngle() that looked like methods and explicitly did the conversions to and from millisconds using the existing methods. Would that work for you?

That would work for me.

I'd be willing to give it a try.  My plan is to use servos for robots that could have 3-4 servos (or more.)  I would like to avoid using extra hardware if possible.

I'd have to look over the code but couldn't you add a SetAngle method instead of looking at values less than 200?

Thanks both of you for the information.  I wondered about an internal "limitation" since so many libraries use pin 9 and 10.

I probably will try out the other library to see how it works, too.  It is nice to have options.

I like that it is using the hardware PWM.  Is there a limit on being able to use the other PWM outputs for servo control?

I really like the Servo library included with 0012 but wonder how hard it would be to have a library for more than 2 servos?  I looked at the code in playground and I think it is possible, but then again, I'm a software guy by day.  

Some servos don't like being at the extreme limits (0 or 180 degrees), either.  I have a Futaba that works from 5 to 180 degrees.  Anything less than 5 and I get similar behavior to what you are describing.

I'm all for it.  I like the idea of taking the arduino "experience" and making it available for attiny.  If you only need a couple of pins, why use a mega?  It does seem like a waste.

Plus a little pager motor to make the thing vibrate, too.

From where?

Can I take a 328 and put it in the socket on my Duemilanove in place of the 168 that is currently there?

I just did that with my 168 based boards.  You'll either need to buy the chip with a bootloader already on it or read about the many ways you can get a bootloader onto the chip.

Check out this site http://www.glacialwanderer.com/hobbyrobotics/?p=11 for some examples of using the Arduino to trigger a Cannon 30D and flash.

You can submit errata for the book at:

http://oreilly.com/catalog/9780596510510/errata/

I have some analog sensors that do not return more than 3.3V so I want to improve accuracy by using a 3.3V AREF voltage.  

I want to hook the AREF pin up to the 3.3V supply pin.  The documentation at http://arduino.cc/en/Reference/AnalogReference says to hook up external sources with a 5K resistor.  

Is it really that easy?

In your last set of double for loops, you are setting both servos to the value of "pos".

I've seen XBee circuits connected directly to the 5V logic lines and some that have the 5V to 3.3V level shifting.  Will it work connecting the XBee's pins directly to the Arduino or is that just asking for a fried XBee?