can't make my servo controlled camera arm move correctly

slipstick:
You mean there are people who rely on finding documentation and don't look at the code? It never occurs to me to do that for things at this open-source non-professional level.

But really you only have to go as far as the header file to find

    void write(int value);             // if value is < 200 its treated as an angle, otherwise as pulse width in microseconds

I don't even trust the comments, and very rarely even read them.