Add fan per thermostat functionlity.

rack_3.yaml

@@ -1,7 +1,12 @@
 substitutions:
   duct_fan_pin: GPIO13
+  duct_fan_name: Rack 3 Duct Fan Speed
+  duct_fan_spd_target_in_name: Rack 3 Duct Fan Target Speed In
+  duct_fan_spd_target_out_name: Rack 3 Duct Fan Target Speed Out
   duct_fan_pwmfreq: 5000Hz
-  duct_fan_spd_name: rack_3_duct_fan_spd
+  duct_fan_off_spd: "0.0"
+  duct_fan_lo_spd: "10.0"
+  duct_fan_hi_spd: "100.0"
   amppwr_pin: GPIO19
   amppwr_name: "Denon Pwr"
   dallas_pin: GPIO32
@@ -9,6 +14,18 @@ substitutions:
   dallas_in_name: Rack 3 Temp In
   dallas_out_addr: "0xB801143296ED7B28"
   dallas_out_name: Rack 3 Temp Out
+  dallas_update_interval: 30s
+
+globals:
+  - id: duct_fan_off_spd
+    type: float
+    initial_value: ${duct_fan_off_spd}
+  - id: duct_fan_lo_spd
+    type: float
+    initial_value: ${duct_fan_lo_spd}
+  - id: duct_fan_hi_spd
+    type: float
+    initial_value: ${duct_fan_hi_spd}
 
 esphome:
   name: rack_3
@@ -31,6 +48,20 @@ wifi:
 
 captive_portal:
 
+# Enable logging
+logger:
+
+# Enable Home Assistant API
+api:
+
+ota:
+
+switch:
+  - platform: template
+    name: Thermostat On
+    id: thermostat_on_id
+    optimistic: true
+
 output:
   - platform: ledc
     pin: ${duct_fan_pin}
@@ -41,13 +72,13 @@ fan:
   - platform: speed
     id: duct_fan_spd_id
     output: duct_fan_output_id
-    name: ${duct_fan_spd_name}
+    name: ${duct_fan_name}
 
 dallas:
   - pin:
       number: ${dallas_pin}
       mode: INPUT_PULLUP
-    update_interval: 10s
+    update_interval: ${dallas_update_interval}
 
 sensor:
   - platform: dallas
@@ -57,49 +88,51 @@ sensor:
     address: ${dallas_out_addr}
     name: ${dallas_out_name}
     id: dallas_out_id
-    on_value:
-      then:
-        number.set:
-          id: fan_speed_target_out
-          value: !lambda |-
-            float lo;
-            float hi;
-            lo = id(thermostat_rack3_out).target_temperature_low;
-            hi = id(thermostat_rack3_out).target_temperature_high;
-            if (x < lo) {
-              return 0.0;
-            }
-            if (x > hi) {
-              return 100.0;
-            }
-            return 100 * (x - lo) / (hi - lo);
+
 number:
   - platform: template
-    id: fan_speed_target_in
-    name: Fan Speed Target In
+    id: duct_fan_spd_target_in_id
+    name: ${duct_fan_spd_target_in_name}
     optimistic: true
-    min_value: 0
-    max_value: 100
+    min_value: ${duct_fan_lo_spd}
+    max_value: ${duct_fan_hi_spd}
     step: 1
   - platform: template
-    id: fan_speed_target_out
-    name: Fan Speed Target Out
-    optimistic: true
-    min_value: 0
-    max_value: 100
+    id: duct_fan_spd_target_out_id
+    name: ${duct_fan_spd_target_out_name}
+    min_value: ${duct_fan_lo_spd}
+    max_value: ${duct_fan_hi_spd}
     step: 1
-    on_value_range:
-      above: 25.0
+    set_action:
       then:
-        fan.turn_on:
-          id: duct_fan_spd_id
-          speed: !lambda |-
-            return x;
+    lambda: |-
+      float lo;
+      float hi;
+      float curtemp;
+      float newspd;
+      lo = id(thermostat_out_id).target_temperature_low;
+      hi = id(thermostat_out_id).target_temperature_high;
+      curtemp = id(dallas_out_id).state;
+      if ((curtemp < lo) || (id(thermostat_on_id).state == false)) {
+        auto call = id(duct_fan_spd_id).turn_off();
+        call.perform();
+        return id(duct_fan_off_spd);
+      }
+      if (curtemp > hi) {
+        newspd = id(duct_fan_hi_spd);
+      } else {
+        // Set newspd to same linear proportion of spd range as current temp is of temp range
+        newspd = id(duct_fan_lo_spd) + (id(duct_fan_hi_spd) * (curtemp - lo) / (hi - lo));
+      }
+      auto call = id(duct_fan_spd_id).turn_on();
+      call.set_speed(newspd);
+      call.perform();
+      return newspd;
 
 # Dual-point thermostat
 climate:
   - platform: thermostat
-    id: thermostat_rack3_out
+    id: thermostat_out_id
     name: Rack3 Out
     sensor: dallas_out_id
     visual:
@@ -116,12 +149,13 @@ climate:
     min_idle_time: 60s
     heat_action:
       - logger.log: "Turning off Rack3 Thermostat"
-      - fan.turn_off:
-          id: duct_fan_spd_id
+      - switch.turn_off: thermostat_on_id
     idle_action:
       - logger.log: "Turning on Rack3 Thermostat"
+      - switch.turn_on: thermostat_on_id
     cool_action:
       - logger.log: "WARNING: Rack3 Thermostat has hit high temp!"
+      - switch.turn_on: thermostat_on_id
       #TODO - provide some kind of warning / action here
 
 # Sense when receiver is turned on
@@ -130,11 +164,3 @@ binary_sensor:
     pin: ${amppwr_pin}
     name: ${amppwr_name}
     device_class: power
-
-# Enable logging
-logger:
-
-# Enable Home Assistant API
-api:
-
-ota: