I am an Arduino newbie, and have ordered both nano and mega boards for playing around with for various projects
- Very excited!
Anyway I am wanting to control the Arduino over USB (which I believe I can do by loading Firmata onto the Arduino), which in turn I wish to output a 0-10V control signal. I aim to output this through the use of basic RC smoothing circuit and a rail-rail OPAMP.
My question is, how much resolution can I achieve?
If the PWM frequency is increased, I presume I can modify the circuit to get a smoother output?
Can anyone advise? I would be most grateful.