bug: speed_print is 10times the real value

[hamboy75]

I have been testing this field and it names it as 800 instead of 80 (80mm/s is what I have).

Good job btw.

[fieldOfView]

What's happening is that the plugin gets the value 80.0 and it removes the .. That makes some sense for values like 0.4 (which becomes 04), but less so for bigger numbers.

Not all applications/firmwares handle multiple points in a filename. But I guess I should make things like that configurable.