setting up esphome

systems/brain/services/home_assistant.nix

@@ -28,6 +28,7 @@
           temperature_unit = "F";
           packages = {
             victron_modbuss = "!include ${./home_assistant/victron_modbuss.yaml}";
+            battery_sensors = "!include ${./home_assistant/battery_sensors.yaml}";
           };
         };
         recorder = {
@@ -67,6 +68,8 @@
           forecast-solar # for solar forecast
           aioesphomeapi # for esphome
           esphome-dashboard-api # for esphome
+          py-improv-ble-client # for esphome
+          bleak-esphome # for esphome
         ];
       extraComponents = [ "isal" ];
     };

systems/brain/services/home_assistant/battery_sensors.yaml

@@ -0,0 +1,99 @@
+template:
+  - sensor:
+      # Battery 0
+      - name: "JK0 charge power W"
+        unique_id: jk0_charge_power_w
+        unit_of_measurement: W
+        device_class: power
+        state_class: measurement
+        state: >
+          {% set p = states('sensor.batteries_jk0_power')|float(0) %}
+          {{ max(0, p) }}
+      - name: "JK0 discharge power W"
+        unique_id: jk0_discharge_power_w
+        unit_of_measurement: W
+        device_class: power
+        state_class: measurement
+        state: >
+          {% set p = states('sensor.batteries_jk0_power')|float(0) %}
+          {{ max(0, -p) }}
+
+      # Battery 1
+      - name: "JK1 charge power W"
+        unique_id: jk1_charge_power_w
+        unit_of_measurement: W
+        device_class: power
+        state_class: measurement
+        state: >
+          {% set p = states('sensor.batteries_jk1_power')|float(0) %}
+          {{ max(0, p) }}
+      - name: "JK1 discharge power W"
+        unique_id: jk1_discharge_power_w
+        unit_of_measurement: W
+        device_class: power
+        state_class: measurement
+        state: >
+          {% set p = states('sensor.batteries_jk1_power')|float(0) %}
+          {{ max(0, -p) }}
+
+sensor:
+  # Battery 0
+  - platform: integration
+    source: sensor.jk0_charge_power_w
+    name: "JK0 energy in"
+    unique_id: jk0_energy_in_kwh
+    unit_prefix: k
+    method: trapezoidal
+    round: 3
+    max_sub_interval:
+      minutes: 5
+  - platform: integration
+    source: sensor.jk0_discharge_power_w
+    name: "JK0 energy out"
+    unique_id: jk0_energy_out_kwh
+    unit_prefix: k
+    method: trapezoidal
+    round: 3
+    max_sub_interval:
+      minutes: 5
+
+  # Battery 1
+  - platform: integration
+    source: sensor.jk1_charge_power_w
+    name: "JK1 energy in"
+    unique_id: jk1_energy_in_kwh
+    unit_prefix: k
+    method: trapezoidal
+    round: 3
+    max_sub_interval:
+      minutes: 5
+  - platform: integration
+    source: sensor.jk1_discharge_power_w
+    name: "JK1 energy out"
+    unique_id: jk1_energy_out_kwh
+    unit_prefix: k
+    method: trapezoidal
+    round: 3
+    max_sub_interval:
+      minutes: 5
+
+utility_meter:
+  # Battery 0
+  jk0_energy_in_daily:
+    source: sensor.jk0_energy_in
+    name: "JK0 Energy In Daily"
+    cycle: daily
+  jk0_energy_out_daily:
+    source: sensor.jk0_energy_out
+    name: "JK0 Energy Out Daily"
+    cycle: daily
+
+  # Battery 1
+  jk1_energy_in_daily:
+    source: sensor.jk1_energy_in
+    name: "JK1 Energy In Daily"
+    cycle: daily
+  jk1_energy_out_daily:
+    source: sensor.jk1_energy_out
+    name: "JK1 Energy Out Daily"
+    cycle: daily