added config example for multiple sources, some doc improvements

config-example.yaml

@@ -12,7 +12,7 @@ interval: 1
 thermalzones:
   - name: GPU+SYSTEM
 
-    # This is your source temperature.
+    # This is your source temperature. You can add multiple sources, see thermal zone below for an example.
     source: amdgpu/temp1_input
 
     # This is most likely 1000 for your temp sensor as well.
@@ -37,19 +37,21 @@ thermalzones:
 
     # For understanding PID please have a look at https://en.wikipedia.org/wiki/PID_controller. The aforementioned page
     # also explains what p, i and d stand for and what they do in detail. These are the second main control knobs.
-    # Simplified you can view them as:
+    # Simplified you can view them as weights for:
-    #   p = how heavy should pid weight difference in temperature
+    #   p = difference in temperature (momentarily)
-    #   i = how heavy should pid weight difference in temperature over time
+    #   i = difference in temperature over time
-    #   d = how heavy should pid weight rate of chance in temperature
+    #   d = rate of chance in temperature
     pid:
       p: 1
       i: 1
       d: 1.5
   - name: CPU
-    source: coretemp/temp1_input
+    source:
+      - coretemp/temp1_input
+      - amdgpu/temp1_input
     factor: 1000
     fan:
-      - it8686/pwm1: [100, 200]
+      - it8686/pwm1: [ 100, 200 ]
     target: 50
     pid:
       p: 1