Increase sensor value limit precision

[ReinvdZee]

Currently, sensor value limits can be specified with 1 digit of precision:

This should be increased to at least 2 digits or maybe even 3 digits.
The smallest step the analog inputs can take is 0.005V.

I tested with a power supply and multimeter, the reported value of the ADC can be off by a few mV (e.g., multimeter reports 724 mV, GX reports 0.72V).

I think 2 digits for setting the sensor limits is sufficient. @mpvader?

[mpvader]

Lets change it to two digits

[mpvader]

From the user:

Safiery Ultrasonics attached to a GX tank.
0 - 4v at maximum tank height (1 metre) but on a smaller tank it’s less. On my tank the range is 0.6v
The GX Tank reads in .005 volt steps. It would be nice to be able to configure in those steps, or simply a button that says “set min” or “set max” which reads the current value to 3 decimal places and sets the min/max.
I’ve had to use dbus-spy to get mine configured correctly.

so, on a second thought, why not simply allow setting it in steps of 0.005V?

Its a bit extreme, but as long as the UI is smart enough wrt accelerating when keeping the button pressed, or add those set min and set max options, then I don’t see why not.

https://community.victronenergy.com/t/bug-sensor-value-a-writeable-field-in-v3-50-24/5179