sensor value conversion

common/base.yaml

@@ -4,7 +4,7 @@ esphome:
   board: lolin_d32_pro
   project:
     name: "xd0.esp32weatherstation2"
-    version: "0.0.6"
+    version: "0.0.7"
   includes:
     - fonts/weather_icon_map.h
     - custom/veml6075_custom_sensor.h

common/battery.yaml

@@ -7,3 +7,7 @@ sensor:
 #    filters:
 #      - lambda: return ( x/4096.0 ) * 2 * 3.42;
     update_interval: 60s
+
+#deep_sleep:
+#  run_duration: 30s
+#  sleep_duration: 10min

common/bme280.yaml

@@ -12,3 +12,34 @@ sensor:
       id: humidity
     address: 0x77
     update_interval: 60s
+  - platform: template
+    name: "${node_name} Equivalent sea level pressure"
+    id: pressure_sealevel
+    lambda: |-
+      const float STANDARD_ALTITUDE = ${altitude}; // in meters, see note
+      return id(pressure).state / powf(1 - ((0.0065 * STANDARD_ALTITUDE) /
+        (id(temperature).state + (0.0065 * STANDARD_ALTITUDE) + 273.15)), 5.257); // in hPa
+    update_interval: 60s
+    unit_of_measurement: 'hPa'
+  - platform: template
+    name: "${node_name} Absolute Humidity"
+    lambda: |-
+      const float mw = 18.01534;    // molar mass of water g/mol
+      const float r = 8.31447215;   // Universal gas constant J/mol/K
+      return (6.112 * powf(2.718281828, (17.67 * id(temperature).state) /
+        (id(temperature).state + 243.5)) * id(humidity).state * mw) /
+        ((273.15 + id(temperature).state) * r); // in grams/m^3
+    accuracy_decimals: 2
+    update_interval: 60s
+    icon: 'mdi:water'
+    unit_of_measurement: 'g/m³'
+  - platform: template
+    name: "${node_name} Dew Point"
+    lambda: |-
+      return (243.5*(log(id(humidity).state/100)+((17.67*id(temperature).state)/
+      (243.5+id(temperature).state)))/(17.67-log(id(humidity).state/100)-
+      ((17.67*id(temperature).state)/(243.5+id(temperature).state))));
+    accuracy_decimals: 1
+    update_interval: 60s
+    unit_of_measurement: °C
+    icon: 'mdi:thermometer-alert'

common/bme680.yaml

@@ -53,6 +53,37 @@ sensor:
         - median:
             window_size: 12
             send_every: 12
+  - platform: template
+    name: "${node_name} Equivalent sea level pressure"
+    id: pressure_sealevel
+    lambda: |-
+      const float STANDARD_ALTITUDE = ${altitude}; // in meters, see note
+      return id(pressure).state / powf(1 - ((0.0065 * STANDARD_ALTITUDE) /
+        (id(temperature).state + (0.0065 * STANDARD_ALTITUDE) + 273.15)), 5.257); // in hPa
+    update_interval: 60s
+    unit_of_measurement: 'hPa'
+  - platform: template
+    name: "${node_name} Absolute Humidity"
+    lambda: |-
+      const float mw = 18.01534;    // molar mass of water g/mol
+      const float r = 8.31447215;   // Universal gas constant J/mol/K
+      return (6.112 * powf(2.718281828, (17.67 * id(temperature).state) /
+        (id(temperature).state + 243.5)) * id(humidity).state * mw) /
+        ((273.15 + id(temperature).state) * r); // in grams/m^3
+    accuracy_decimals: 2
+    update_interval: 60s
+    icon: 'mdi:water'
+    unit_of_measurement: 'g/m³'
+  - platform: template
+    name: "${node_name} Dew Point"
+    lambda: |-
+      return (243.5*(log(id(humidity).state/100)+((17.67*id(temperature).state)/
+      (243.5+id(temperature).state)))/(17.67-log(id(humidity).state/100)-
+      ((17.67*id(temperature).state)/(243.5+id(temperature).state))));
+    accuracy_decimals: 1
+    update_interval: 60s
+    unit_of_measurement: °C
+    icon: 'mdi:thermometer-alert'
 
 text_sensor:
   - platform: bme680_bsec

common/display.yaml

@@ -70,7 +70,7 @@ display:
           if (id(temperature).state) {
             it.printf(2, 21+4, id(font2), COLOR_OFF, "%.1f", id(temperature).state); it.printf(55, 21+4, id(font1), COLOR_OFF, "°C");
             it.printf(2, 57+4, id(font2), COLOR_OFF, "%.1f", id(humidity).state);  it.printf(55, 57+4, id(font1), COLOR_OFF, "%%");
-            it.printf(2, 93+4, id(font2), COLOR_OFF, "%.0f", id(pressure).state); it.printf(55, 93+4, id(font1), COLOR_OFF, "hPa");
+            it.printf(2, 93+4, id(font2), COLOR_OFF, "%.0f", id(pressure_sealevel).state); it.printf(55, 93+4, id(font1), COLOR_OFF, "hPa");
             it.graph(70, 21, id(temperature_graph));
             it.graph(70, 57, id(humidity_graph));
             it.graph(70, 93, id(pressure_graph));

hendrik-test.yaml

@@ -1,5 +1,6 @@
 substitutions:
   node_name: hendrik-test
+  altitude: "111"
 
 packages:
   base: !include common/base.yaml

sensor-outdoor.yaml

@@ -1,5 +1,6 @@
 substitutions:
   node_name: sensor-outdoor
+  altitude: "30"
 
 packages:
   base: !include common/base.yaml

sensor-springer.yaml

@@ -1,5 +1,6 @@
 substitutions:
   node_name: sensor-springer
+  altitude: "30"
 
 packages:
   base: !include common/base.yaml

sensor-sz.yaml

@@ -1,5 +1,6 @@
 substitutions:
   node_name: sensor-sz
+  altitude: "30"
 
 packages:
   base: !include common/base.yaml

sensor-wz.yaml

@@ -1,5 +1,6 @@
 substitutions:
   node_name: sensor-wz
+  altitude: "30"
 
 packages:
   base: !include common/base.yaml