Greetings

(Is this OT - - - - dunno - - - that's why the goofy label!)

I am in the beginning throes of an embedded system (SoC, and/or
microcontroller) design.

Have been reading somewhat on the use of RTOS vs and OS (thinking
perhaps FreeRTOS and Devuan). My initial problem is a weighing 'cell'
where I'm weighing liquids being deposited in a 'jar'.
(A second would be items deposited (and then removed in stages) from a
4 wheel cart.)

How does one decide when a RTOS is more appropriate than an OS?

(I've been reading what I can find on the intersweb and I'm not sure
I'm understanding the decision logic accurately! (sorry - - - - zero
formal training in either of computing science nor in mechatronics nor
in electronic engineering).)

Both of above systems will be connected to databases for information
storage or is that just a data logger with subsequent not only storage
but analysis.

Also could possibly be seen as part of a commercial IOT system on my
little farm.

Guidance would be greatly appreciated.

TIA