I got some Zigbees S2C and trying to do some distance measurements with it.
I have tried the RSSI option, and got some decent results (± 2-5m) but not where i am aiming for (± 0.5-1m).
Second option is Time of Flight. But i got variations within the request and receive time.
Examples of measured times:
11.15mS
10.91mS
10.79mS
10.29mS
10.50mS
10.79mS
10.15mS
So is varies with like 1mS. Any idea where this difference come from and if this can be reduced?