Appdaemon app that attempts to solve indoor position (x,y,z) with multiple ESPresense stations using multilateralization.
This uses numpy/scipy with a "Nelder-Mead" minimize of total error. Error is the amount of difference a guessed position has between the calced distance to a base station and the actual measured distance to the base station (via ESPresense rssi). Various x,y,z are tried and the position with the least error is where we guess it is.
This requires at least 3 ESPresense nodes that can get a "fix" on the particular device. The more devices the better. To get a decently accurate position you need at least 5 or 6. But this can find the location of something even if the particular room doesn't have a base station (You can put nodes on the perimeter of your house instead of the "center" of rooms). To actually determine if an item is in a particular room, you have to write down two opposite coordinates of a room to check if the items coordinates are within these boundaries.
For this to work you need to add this to your appdaemon Add-On config:
init_commands:
- apk add --update python3 python3-dev py3-numpy py3-scipy
python_packages: []
system_packages: []You need to have both MQTT and HASS added to appdaemon.yaml:
appdaemon:
time_zone: America/New_York
latitude: 40.234223
longitude: -75.23456
elevation: 146
plugins:
HASS:
type: hass
ha_url: "http://192.168.128.8:8123"
token: "xxxx"
namespace: default
app_init_delay: 30
appdaemon_startup_conditions:
delay: 30
MQTT:
type: mqtt
client_host: 192.168.128.9
namespace: mqtt
birth_topic: appdaemon
will_topic: appdaemonFinally you need something like this in your app.yaml:
ESPresenseIps:
module: espresense-ips
class: ESPresenseIps
pluggins:
- HASS
- MQTT
rooms:
garage: [0, 8, 0.4]
office: [5, 1.5, 0.5]
family: [0, 0, 0]
kitchen: [8, 6, 0.5]
dining: [16, 0, 0.5]
devices:
- id: tile:xxx
name: AirPods
timeout: 30
away_timeout: 120
- id: tile:xxx
name: Wallet
timeout: 30
away_timeout: 120
- id: apple:1005:9-26
name: Watch
timeout: 30
away_timeout: 120
roomplans:
- name: living
y1: 0.0
x1: 0.0
y2: 7.0
x2: 6.0
- name: entrance
y1: 7.0
x1: 0.0
y2: 10.0
x2: 2.0
- name: bath
y1: 7.0
x1: 2.0
y2: 10.0
x2: 6.0
- name: kitchen
y1: 10.0
x1: 0.0
y2: 13.5
x2: 5.0