Adjust PoE and change 3.3V supply topology

-Snubber circuit under ecrtail load condition can dissipate more power
then the resistor can handle, increased the resistor size and added one
more in parallel
-Increased size of some of the 12V input capacitors
-Use 3.3Vp instead of 3.3V generated by the RPi for LED, RTC, Radio, Fan
control and RPi reduced hat connector
-PoE pri/sec capacitor value changed

Signed-off-by: Dominik Sliwa <dominik@sliwa.io>

PoE.kicad_sch

@@ -1568,7 +1568,6 @@
     )
   )
 
-
   (junction (at 83.82 80.01) (diameter 0) (color 0 0 0 0)
     (uuid 05458af9-a0cd-4d70-b2e6-c97a61ef94a3)
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@@ -1599,6 +1598,9 @@
   (junction (at 242.57 52.07) (diameter 0) (color 0 0 0 0)
     (uuid 33c5fee2-5150-469f-8e4e-0c5565e9daf2)
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+  (junction (at 190.5 63.5) (diameter 0) (color 0 0 0 0)
+    (uuid 35caa2ff-5ac0-414a-9ce1-dd4c07fecc3f)
+  )
   (junction (at 160.02 44.45) (diameter 0.9144) (color 0 0 0 0)
     (uuid 3918f455-43b5-4b75-9cb3-d94d2246a79e)
   )
@@ -1617,6 +1619,9 @@
   (junction (at 175.26 80.01) (diameter 0.9144) (color 0 0 0 0)
     (uuid 46411048-26da-4369-ba01-0ac72fcae2e6)
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+  (junction (at 191.77 72.39) (diameter 0) (color 0 0 0 0)
+    (uuid 46c617e4-92f7-4dbc-aa51-67e2e36376f5)
+  )
   (junction (at 45.72 138.43) (diameter 0.9144) (color 0 0 0 0)
     (uuid 48a5aae9-6385-4517-8319-1880b076c0e6)
   )
@@ -1888,6 +1893,10 @@
     (stroke (width 0) (type solid) (color 0 0 0 0))
     (uuid 0eff93f5-8333-45ae-97d9-f4c1967236cc)
   )
+  (wire (pts (xy 196.85 63.5) (xy 196.85 64.77))
+    (stroke (width 0) (type default) (color 0 0 0 0))
+    (uuid 107e82c6-83a2-4022-a96c-e0a3f7b051ba)
+  )
   (wire (pts (xy 87.63 102.87) (xy 87.63 105.41))
     (stroke (width 0) (type solid) (color 0 0 0 0))
     (uuid 1349accd-ae43-4116-9286-1ffd30d6c8cc)
@@ -2025,6 +2034,10 @@
     (stroke (width 0) (type solid) (color 0 0 0 0))
     (uuid 336733a3-2fb2-478b-84d2-09937b1df34c)
   )
+  (wire (pts (xy 190.5 63.5) (xy 196.85 63.5))
+    (stroke (width 0) (type default) (color 0 0 0 0))
+    (uuid 337c7b87-595b-487c-935f-bbb0689e7902)
+  )
   (wire (pts (xy 25.4 190.5) (xy 30.48 190.5))
     (stroke (width 0) (type solid) (color 0 0 0 0))
     (uuid 33d77c6f-df59-427b-acd8-7be5484da959)
@@ -2363,6 +2376,10 @@
     (stroke (width 0) (type solid) (color 0 0 0 0))
     (uuid 77a661f9-a916-4c51-9bf7-3807a893b1ad)
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+  (wire (pts (xy 196.85 69.85) (xy 196.85 72.39))
+    (stroke (width 0) (type default) (color 0 0 0 0))
+    (uuid 7892ecd8-5b7c-4e32-96a6-f71b0a64fc41)
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   (wire (pts (xy 43.18 55.88) (xy 58.42 55.88))
     (stroke (width 0) (type solid) (color 0 0 0 0))
     (uuid 79795adc-8374-4cbf-911f-bc8669baab74)
@@ -3011,6 +3028,10 @@
     (stroke (width 0) (type solid) (color 0 0 0 0))
     (uuid f3b09be6-b311-4446-b884-8b27f29cef7a)
   )
+  (wire (pts (xy 196.85 72.39) (xy 191.77 72.39))
+    (stroke (width 0) (type default) (color 0 0 0 0))
+    (uuid f3d8e0ea-dbd9-4689-ab42-5c8dbbbbd59b)
+  )
   (wire (pts (xy 147.32 44.45) (xy 160.02 44.45))
     (stroke (width 0) (type solid) (color 0 0 0 0))
     (uuid f471dabb-b6e0-426b-bb2b-b706b86ef0a4)
@@ -3591,10 +3612,10 @@
     (property "Reference" "R63" (id 0) (at 191.9987 66.1606 0)
       (effects (font (size 1.27 1.27)) (justify left))
     )
-    (property "Value" "6k2" (id 1) (at 191.999 68.459 0)
+    (property "Value" "" (id 1) (at 191.999 68.459 0)
       (effects (font (size 1.27 1.27)) (justify left))
     )
-    (property "Footprint" "Resistor_SMD:R_0805_2012Metric" (id 2) (at 190.5 67.31 0)
+    (property "Footprint" "" (id 2) (at 190.5 67.31 0)
       (effects (font (size 1.27 1.27)) hide)
     )
     (property "Datasheet" "~" (id 3) (at 190.5 67.31 0)
@@ -3743,7 +3764,7 @@
     (property "Reference" "C93" (id 0) (at 200.7806 20.5358 90)
       (effects (font (size 1.27 1.27)) (justify left))
     )
-    (property "Value" "10n/2kV" (id 1) (at 203.079 22.441 90)
+    (property "Value" "" (id 1) (at 203.079 22.441 90)
       (effects (font (size 1.27 1.27)) (justify left))
     )
     (property "Footprint" "Capacitor_SMD:C_1812_4532Metric" (id 2) (at 199.39 17.78 0)
@@ -4285,6 +4306,26 @@
     (pin "1" (uuid e1758499-891c-4c15-b89b-6b70806d8c6d))
   )
 
+  (symbol (lib_id "Device:R_Small") (at 196.85 67.31 0) (unit 1)
+    (in_bom yes) (on_board yes)
+    (uuid 8548cc67-6fc0-457c-800f-20ab165029a1)
+    (property "Reference" "R15" (id 0) (at 198.3487 66.1606 0)
+      (effects (font (size 1.27 1.27)) (justify left))
+    )
+    (property "Value" "" (id 1) (at 198.349 68.459 0)
+      (effects (font (size 1.27 1.27)) (justify left))
+    )
+    (property "Footprint" "" (id 2) (at 196.85 67.31 0)
+      (effects (font (size 1.27 1.27)) hide)
+    )
+    (property "Datasheet" "~" (id 3) (at 196.85 67.31 0)
+      (effects (font (size 1.27 1.27)) hide)
+    )
+    (property "Config" "+PoE" (id 4) (at 200.66 71.12 0))
+    (pin "1" (uuid 3ebe19f9-d4bc-4fe2-99f8-c7e802e714fd))
+    (pin "2" (uuid 5e2ca797-3b66-4e67-9d3e-b1dde442b7a7))
+  )
+
   (symbol (lib_id "Device:D_Schottky") (at 161.29 58.42 0) (unit 1)
     (in_bom yes) (on_board yes)
     (uuid 86fd292a-501d-4968-a633-e6f23750b9a8)