OK, so here is the ESPresence config screen that someone else sent to me one time.
The “Factor used to account for…” thing is where you can make some adjustment to the distance calculation. You can look up in the ESPresence instructions how to adjust this number.
Basically, this is a constant that plugs into the formula used to calculate the distance from the beacon. The other main inputs into the formula are the actual live RSSI of the beacon and the measured (fixed) RSSI of the beacon.
The page also has an input for “RSSI expected from a 0dBm transmitter…” but as it also shows, you don’t need to enter anything here since you are using an iBeacon. iBeacons broadcast their fixed/calibrated RSSI as part of their regular broadcast, so you don’t need to specify this. Probably anything you enter here will be ignored if you are using an iBeacon.
