nodes/d1-mini-scd40-fee158: Set custom CO2 sensor calibration normal

nodes/d1-mini-scd40-fee158/firmware.yaml

@@ -227,11 +227,24 @@ button:
     on_press:
       then:
         - scd4x.perform_forced_calibration:
-            # Average outdoor value for March 2023
-            # https://www.co2.earth/daily-co2
-            value: 421
+            value: !lambda |-
+              return id(co2_sensor_calibration_normal).state;
             id: scd40
 
+number:
+  - platform: template
+    id: co2_sensor_calibration_normal
+    name: "${macsuffix} C02 Sensor Calibration Normal"
+    mode: "box"
+    optimistic: true
+    unit_of_measurement: "ppm"
+    # Average outdoor value for March 2023
+    # https://www.co2.earth/daily-co2
+    initial_value: 421
+    min_value: 0
+    max_value: 1000000
+    step: 1
+
 light:
   - platform: neopixelbus
     id: indicator