add display usuage to show hydration for each bed;

esphome_b4_controller.yaml

@@ -49,6 +49,15 @@ ads1115:
     i2c_id: bus_ads
     address: 0x48
 
+font:
+  - file: "gfonts://Roboto"
+    id: font_small
+    size: 10
+
+  - file: "gfonts://Roboto"
+    id: font_medium
+    size: 14
+
 globals:
   - id: hb1_wet_voltage
     type: float
@@ -309,6 +318,35 @@ sensor:
       if (p > 100) p = 100;
       return p;
 
+display:
+  - platform: ssd1306_i2c
+    id: b4_display
+    i2c_id: bus_relay
+    model: "SSD1306 128x64"
+    address: 0x3C
+    update_interval: 2s
+    lambda: |-
+      it.printf(0, 0, id(font_small), "Hochbeete");
+      if (!isnan(id(b4_moisture_1).state))
+        it.printf(0, 16, id(font_medium), "1:%3.0f%%", id(b4_moisture_1).state);
+      else
+        it.printf(0, 16, id(font_medium), "1:---");
+
+      if (!isnan(id(b4_moisture_2).state))
+        it.printf(64, 16, id(font_medium), "2:%3.0f%%", id(b4_moisture_2).state);
+      else
+        it.printf(64, 16, id(font_medium), "2:---");
+
+      if (!isnan(id(b4_moisture_3).state))
+        it.printf(0, 40, id(font_medium), "3:%3.0f%%", id(b4_moisture_3).state);
+      else
+        it.printf(0, 40, id(font_medium), "3:---");
+
+      if (!isnan(id(b4_moisture_4).state))
+        it.printf(64, 40, id(font_medium), "4:%3.0f%%", id(b4_moisture_4).state);
+      else
+        it.printf(64, 40, id(font_medium), "4:---");
+
 uart:
   - id: uart_rs485
     tx_pin: GPIO38