Remove humidity, wifi from dashboard, add last sync time to dashboard

hardware/esphome/plant_dashboard/plant_dashboard.yaml

@@ -120,6 +120,11 @@ globals:
     type: "MAX1704xSensor*"
     restore_value: no
 
+time:
+  - platform: sntp
+    id: sntp_time
+    servers: 10.5.5.2
+
 binary_sensor:
   - platform: status
     name: "Status"
@@ -131,6 +136,7 @@ sensor:
     update_interval: 3min
     unit_of_measurement: "dB"
     accuracy_decimals: 1
+    expire_after: 4h
   - platform: custom
     lambda: |-
       SHT1xSensor* sht1x = new SHT1xSensor();
@@ -142,14 +148,17 @@ sensor:
         id: Temperature_C
         unit_of_measurement: "°C"
         accuracy_decimals: 1
+        expire_after: 4h
       - name: "Temperature_F"
         id: Temperature_F
         unit_of_measurement: "°F"
         accuracy_decimals: 1
+        expire_after: 4h
       - name: "Humidity"
         id: Humidity
         unit_of_measurement: "%"
         accuracy_decimals: 1
+        expire_after: 4h
   - platform: custom
     lambda: |-
       MAX1704xSensor* max1704x = new MAX1704xSensor();
@@ -161,17 +170,22 @@ sensor:
         id: Battery_Voltage
         unit_of_measurement: "V"
         accuracy_decimals: 2
+        expire_after: 4h
       - name: "Battery_Level"
         id: Battery_Level
         unit_of_measurement: "%"
         accuracy_decimals: 1
+        expire_after: 4h
       - name: "Battery_Sleeping"
         id: Battery_Sleeping
+        expire_after: 4h
       - name: "Battery_Alert"
         id: Battery_Alert
+        expire_after: 4h
       - name: "Battery_Threshold"
         id: Battery_Threshold
         accuracy_decimals: 0
+        expire_after: 4h
 
 # 2.9" Waveshare e-ink setup
 # BUSY -> 21, RST -> 14, DC -> 15, CS -> 27, CLK -> SCK(5), DIN -> MOSI(18), GND -> GND, 3.3V -> 3.3V
@@ -211,15 +225,12 @@ display:
       else {
         it.printf(32, 16, id(deja_vu_mono), "%.1f%%", id(Battery_Level).state);
       }
-      // WiFi
-      it.image(148, 0, id(wifi_icon));
-      it.printf(185, 16, id(deja_vu_mono), "%.1fdB", id(sensor_wifi_signal).state);
       // Temperature
-      it.image(0, 32, id(thermometer));
+      it.image(116, 0, id(thermometer)); // 148, 0
-      it.printf(32, 48, id(deja_vu_mono), "%.1f°F", id(Temperature_F).state);
+      it.printf(153, 16, id(deja_vu_mono), "%.1f°F", id(Temperature_F).state);
-      // Humidity
+      // Last update
-      it.image(148, 32, id(humidity));
+      it.image(0, 32, id(last_sync_icon));
-      it.printf(185, 48, id(deja_vu_mono), "%.1f%%", id(Humidity).state);
+      it.strftime(32, 39, id(deja_vu_mono), "%Y-%m-%d %H:%M", id(sntp_time).now());
       // Plants
       it.image(0, 64, id(inverted_cat_nip));
       it.image(37, 64, id(inverted_christmas_cactus));
@@ -276,9 +287,6 @@ image:
   - file: graphics/noun_humidity_1762738.png # temp + humidity
     id: temp_humidity
     resize: 32x32
-  - file: graphics/noun_humidity_2280622.png # humidity
-    id: humidity
-    resize: 32x32
   - file: graphics/noun_leaf_1153077.png # catnip
     id: cat_nip
     resize: 32x32
@@ -288,8 +296,8 @@ image:
   - file: graphics/noun_Thermometer_217722.png # thermometer
     id: thermometer
     resize: 32x32
-  - file: graphics/noun_wifi_2201334.png # wifi
+  - file: graphics/noun_update_2346502.png # last sync
-    id: wifi_icon
+    id: last_sync_icon
     resize: 32x32
   - file: graphics/inverted_noun_Tarragon_499800.png # inverted tarragon
     id: inverted_tarragon