hardware: More schematics ERC fixes, add a remark about USB isolation.

hackamp/hardware/bluetooth.kicad_sch

@@ -1165,11 +1165,11 @@
         )
       )
     )
-    (symbol "power:+1V8" (power) (pin_names (offset 0)) (in_bom yes) (on_board yes)
+    (symbol "power:+3V3" (power) (pin_names (offset 0)) (in_bom yes) (on_board yes)
       (property "Reference" "#PWR" (id 0) (at 0 -3.81 0)
         (effects (font (size 1.27 1.27)) hide)
       )
-      (property "Value" "+1V8" (id 1) (at 0 3.556 0)
+      (property "Value" "+3V3" (id 1) (at 0 3.556 0)
         (effects (font (size 1.27 1.27)))
       )
       (property "Footprint" "" (id 2) (at 0 0 0)
@@ -1181,10 +1181,10 @@
       (property "ki_keywords" "power-flag" (id 4) (at 0 0 0)
         (effects (font (size 1.27 1.27)) hide)
       )
-      (property "ki_description" "Power symbol creates a global label with name \"+1V8\"" (id 5) (at 0 0 0)
+      (property "ki_description" "Power symbol creates a global label with name \"+3V3\"" (id 5) (at 0 0 0)
         (effects (font (size 1.27 1.27)) hide)
       )
-      (symbol "+1V8_0_1"
+      (symbol "+3V3_0_1"
         (polyline
           (pts
             (xy -0.762 1.27)
@@ -1207,18 +1207,18 @@
           (stroke (width 0)) (fill (type none))
         )
       )
-      (symbol "+1V8_1_1"
+      (symbol "+3V3_1_1"
         (pin power_in line (at 0 0 90) (length 0) hide
-          (name "+1V8" (effects (font (size 1.27 1.27))))
+          (name "+3V3" (effects (font (size 1.27 1.27))))
           (number "1" (effects (font (size 1.27 1.27))))
         )
       )
     )
-    (symbol "power:+3V3" (power) (pin_names (offset 0)) (in_bom yes) (on_board yes)
-      (property "Reference" "#PWR" (id 0) (at 0 -3.81 0)
+    (symbol "power:GND" (power) (pin_names (offset 0)) (in_bom yes) (on_board yes)
+      (property "Reference" "#PWR" (id 0) (at 0 -6.35 0)
         (effects (font (size 1.27 1.27)) hide)
       )
-      (property "Value" "+3V3" (id 1) (at 0 3.556 0)
+      (property "Value" "GND" (id 1) (at 0 -3.81 0)
         (effects (font (size 1.27 1.27)))
       )
       (property "Footprint" "" (id 2) (at 0 0 0)
@@ -1230,85 +1230,75 @@
       (property "ki_keywords" "power-flag" (id 4) (at 0 0 0)
         (effects (font (size 1.27 1.27)) hide)
       )
-      (property "ki_description" "Power symbol creates a global label with name \"+3V3\"" (id 5) (at 0 0 0)
+      (property "ki_description" "Power symbol creates a global label with name \"GND\" , ground" (id 5) (at 0 0 0)
         (effects (font (size 1.27 1.27)) hide)
       )
-      (symbol "+3V3_0_1"
-        (polyline
-          (pts
-            (xy -0.762 1.27)
-            (xy 0 2.54)
-          )
-          (stroke (width 0)) (fill (type none))
-        )
+      (symbol "GND_0_1"
         (polyline
           (pts
             (xy 0 0)
-            (xy 0 2.54)
-          )
-          (stroke (width 0)) (fill (type none))
-        )
-        (polyline
-          (pts
-            (xy 0 2.54)
-            (xy 0.762 1.27)
+            (xy 0 -1.27)
+            (xy 1.27 -1.27)
+            (xy 0 -2.54)
+            (xy -1.27 -1.27)
+            (xy 0 -1.27)
           )
           (stroke (width 0)) (fill (type none))
         )
       )
-      (symbol "+3V3_1_1"
-        (pin power_in line (at 0 0 90) (length 0) hide
-          (name "+3V3" (effects (font (size 1.27 1.27))))
+      (symbol "GND_1_1"
+        (pin power_in line (at 0 0 270) (length 0) hide
+          (name "GND" (effects (font (size 1.27 1.27))))
           (number "1" (effects (font (size 1.27 1.27))))
         )
       )
     )
-    (symbol "power:GND" (power) (pin_names (offset 0)) (in_bom yes) (on_board yes)
-      (property "Reference" "#PWR" (id 0) (at 0 -6.35 0)
+    (symbol "power:PWR_FLAG" (power) (pin_numbers hide) (pin_names (offset 0) hide) (in_bom yes) (on_board yes)
+      (property "Reference" "#FLG" (id 0) (at 0 1.905 0)
         (effects (font (size 1.27 1.27)) hide)
       )
-      (property "Value" "GND" (id 1) (at 0 -3.81 0)
+      (property "Value" "PWR_FLAG" (id 1) (at 0 3.81 0)
         (effects (font (size 1.27 1.27)))
       )
       (property "Footprint" "" (id 2) (at 0 0 0)
         (effects (font (size 1.27 1.27)) hide)
       )
-      (property "Datasheet" "" (id 3) (at 0 0 0)
+      (property "Datasheet" "~" (id 3) (at 0 0 0)
         (effects (font (size 1.27 1.27)) hide)
       )
       (property "ki_keywords" "power-flag" (id 4) (at 0 0 0)
         (effects (font (size 1.27 1.27)) hide)
       )
-      (property "ki_description" "Power symbol creates a global label with name \"GND\" , ground" (id 5) (at 0 0 0)
+      (property "ki_description" "Special symbol for telling ERC where power comes from" (id 5) (at 0 0 0)
         (effects (font (size 1.27 1.27)) hide)
       )
-      (symbol "GND_0_1"
+      (symbol "PWR_FLAG_0_0"
+        (pin power_out line (at 0 0 90) (length 0)
+          (name "pwr" (effects (font (size 1.27 1.27))))
+          (number "1" (effects (font (size 1.27 1.27))))
+        )
+      )
+      (symbol "PWR_FLAG_0_1"
         (polyline
           (pts
             (xy 0 0)
-            (xy 0 -1.27)
-            (xy 1.27 -1.27)
-            (xy 0 -2.54)
-            (xy -1.27 -1.27)
-            (xy 0 -1.27)
+            (xy 0 1.27)
+            (xy -1.016 1.905)
+            (xy 0 2.54)
+            (xy 1.016 1.905)
+            (xy 0 1.27)
           )
           (stroke (width 0)) (fill (type none))
         )
       )
-      (symbol "GND_1_1"
-        (pin power_in line (at 0 0 270) (length 0) hide
-          (name "GND" (effects (font (size 1.27 1.27))))
-          (number "1" (effects (font (size 1.27 1.27))))
-        )
-      )
     )
   )
 
-
   (junction (at 24.13 80.01) (diameter 0.9144) (color 0 0 0 0))
   (junction (at 30.48 148.59) (diameter 0.9144) (color 0 0 0 0))
   (junction (at 30.48 177.8) (diameter 0.9144) (color 0 0 0 0))
   (junction (at 34.29 80.01) (diameter 0.9144) (color 0 0 0 0))
+  (junction (at 45.72 34.29) (diameter 0.9144) (color 0 0 0 0))
   (junction (at 45.72 135.89) (diameter 0.9144) (color 0 0 0 0))
   (junction (at 45.72 148.59) (diameter 0.9144) (color 0 0 0 0))
   (junction (at 45.72 165.1) (diameter 0.9144) (color 0 0 0 0))
@@ -1333,24 +1323,25 @@
   (junction (at 214.63 26.67) (diameter 0.9144) (color 0 0 0 0))
   (junction (at 236.22 153.67) (diameter 0.9144) (color 0 0 0 0))
 
-  (no_connect (at 217.17 29.21))
-  (no_connect (at 257.81 69.85))
-  (no_connect (at 217.17 24.13))
-  (no_connect (at 257.81 77.47))
-  (no_connect (at 257.81 87.63))
+  (no_connect (at 257.81 44.45))
+  (no_connect (at 257.81 29.21))
+  (no_connect (at 257.81 80.01))
+  (no_connect (at 109.22 157.48))
+  (no_connect (at 257.81 85.09))
   (no_connect (at 246.38 146.05))
+  (no_connect (at 257.81 77.47))
+  (no_connect (at 257.81 69.85))
+  (no_connect (at 109.22 160.02))
   (no_connect (at 246.38 135.89))
-  (no_connect (at 257.81 46.99))
   (no_connect (at 217.17 87.63))
-  (no_connect (at 257.81 62.23))
-  (no_connect (at 257.81 44.45))
-  (no_connect (at 257.81 67.31))
-  (no_connect (at 109.22 160.02))
-  (no_connect (at 109.22 157.48))
+  (no_connect (at 257.81 87.63))
+  (no_connect (at 257.81 46.99))
   (no_connect (at 257.81 74.93))
+  (no_connect (at 217.17 29.21))
+  (no_connect (at 217.17 24.13))
+  (no_connect (at 257.81 67.31))
+  (no_connect (at 257.81 62.23))
   (no_connect (at 257.81 59.69))
-  (no_connect (at 257.81 85.09))
-  (no_connect (at 257.81 80.01))
 
   (wire (pts (xy 24.13 72.39) (xy 24.13 80.01))
     (stroke (width 0) (type solid) (color 0 0 0 0))
@@ -1433,10 +1424,10 @@
   (wire (pts (xy 38.1 165.1) (xy 38.1 170.18))
     (stroke (width 0) (type solid) (color 0 0 0 0))
   )
-  (wire (pts (xy 43.18 34.29) (xy 50.8 34.29))
+  (wire (pts (xy 43.18 34.29) (xy 45.72 34.29))
     (stroke (width 0) (type solid) (color 0 0 0 0))
   )
-  (wire (pts (xy 43.18 36.83) (xy 49.53 36.83))
+  (wire (pts (xy 43.18 36.83) (xy 53.34 36.83))
     (stroke (width 0) (type solid) (color 0 0 0 0))
   )
   (wire (pts (xy 43.18 39.37) (xy 110.49 39.37))
@@ -1457,10 +1448,16 @@
   (wire (pts (xy 43.18 52.07) (xy 45.72 52.07))
     (stroke (width 0) (type solid) (color 0 0 0 0))
   )
+  (wire (pts (xy 45.72 31.75) (xy 45.72 34.29))
+    (stroke (width 0) (type solid) (color 0 0 0 0))
+  )
+  (wire (pts (xy 45.72 34.29) (xy 54.61 34.29))
+    (stroke (width 0) (type solid) (color 0 0 0 0))
+  )
   (wire (pts (xy 45.72 52.07) (xy 45.72 54.61))
     (stroke (width 0) (type solid) (color 0 0 0 0))
   )
-  (wire (pts (xy 45.72 133.35) (xy 45.72 135.89))
+  (wire (pts (xy 45.72 128.27) (xy 45.72 135.89))
     (stroke (width 0) (type solid) (color 0 0 0 0))
   )
   (wire (pts (xy 45.72 135.89) (xy 38.1 135.89))
@@ -1478,7 +1475,7 @@
   (wire (pts (xy 45.72 148.59) (xy 54.61 148.59))
     (stroke (width 0) (type solid) (color 0 0 0 0))
   )
-  (wire (pts (xy 45.72 162.56) (xy 45.72 165.1))
+  (wire (pts (xy 45.72 157.48) (xy 45.72 165.1))
     (stroke (width 0) (type solid) (color 0 0 0 0))
   )
   (wire (pts (xy 45.72 165.1) (xy 38.1 165.1))
@@ -1499,9 +1496,6 @@
   (wire (pts (xy 46.99 90.17) (xy 46.99 92.71))
     (stroke (width 0) (type solid) (color 0 0 0 0))
   )
-  (wire (pts (xy 57.15 36.83) (xy 66.04 36.83))
-    (stroke (width 0) (type solid) (color 0 0 0 0))
-  )
   (wire (pts (xy 57.15 80.01) (xy 59.69 80.01))
     (stroke (width 0) (type solid) (color 0 0 0 0))
   )
@@ -1514,6 +1508,9 @@
   (wire (pts (xy 59.69 90.17) (xy 59.69 92.71))
     (stroke (width 0) (type solid) (color 0 0 0 0))
   )
+  (wire (pts (xy 60.96 36.83) (xy 69.85 36.83))
+    (stroke (width 0) (type solid) (color 0 0 0 0))
+  )
   (wire (pts (xy 86.36 144.78) (xy 88.9 144.78))
     (stroke (width 0) (type solid) (color 0 0 0 0))
   )
@@ -1993,10 +1990,16 @@
   (label "3V3_BT" (at 24.13 72.39 270)
     (effects (font (size 1.27 1.27)) (justify right bottom))
   )
+  (label "1V8_BT" (at 45.72 128.27 270)
+    (effects (font (size 1.27 1.27)) (justify right bottom))
+  )
+  (label "1V8_BT" (at 45.72 157.48 270)
+    (effects (font (size 1.27 1.27)) (justify right bottom))
+  )
   (label "MFB" (at 48.26 49.53 180)
     (effects (font (size 1.27 1.27)) (justify right bottom))
   )
-  (label "3V3_BT" (at 50.8 34.29 180)
+  (label "3V3_BT" (at 54.61 34.29 180)
     (effects (font (size 1.27 1.27)) (justify right bottom))
   )
   (label "SCL_1V8" (at 54.61 148.59 180)
@@ -2008,7 +2011,7 @@
   (label "1V8_BT" (at 59.69 72.39 270)
     (effects (font (size 1.27 1.27)) (justify right bottom))
   )
-  (label "SDO_3V3" (at 66.04 36.83 180)
+  (label "SDO_3V3" (at 69.85 36.83 180)
     (effects (font (size 1.27 1.27)) (justify right bottom))
   )
   (label "SDO_3V3" (at 99.06 142.24 0)
@@ -2214,6 +2217,21 @@
     (effects (font (size 1.27 1.27)) (justify right))
   )
 
+  (symbol (lib_id "power:PWR_FLAG") (at 45.72 31.75 0) (unit 1)
+    (in_bom yes) (on_board yes)
+    (uuid "ce826ad4-b2d1-4064-a7e6-a6ee855b8b46")
+    (property "Reference" "#FLG0106" (id 0) (at 45.72 29.845 0)
+      (effects (font (size 1.27 1.27)) hide)
+    )
+    (property "Value" "PWR_FLAG" (id 1) (at 45.72 26.67 0))
+    (property "Footprint" "" (id 2) (at 45.72 31.75 0)
+      (effects (font (size 1.27 1.27)) hide)
+    )
+    (property "Datasheet" "~" (id 3) (at 45.72 31.75 0)
+      (effects (font (size 1.27 1.27)) hide)
+    )
+  )
+
   (symbol (lib_id "power:+3V3") (at 27.94 31.75 0) (unit 1)
     (in_bom yes) (on_board yes)
     (uuid "216cbb0c-1790-4682-b3a7-f4599e7df31c")
@@ -2259,36 +2277,6 @@
     )
   )
 
-  (symbol (lib_id "power:+1V8") (at 45.72 133.35 0) (unit 1)
-    (in_bom yes) (on_board yes)
-    (uuid "122fa003-3099-42f8-84a7-4aae62f21254")
-    (property "Reference" "#PWR0174" (id 0) (at 45.72 137.16 0)
-      (effects (font (size 1.27 1.27)) hide)
-    )
-    (property "Value" "+1V8" (id 1) (at 46.99 128.27 0))
-    (property "Footprint" "" (id 2) (at 45.72 133.35 0)
-      (effects (font (size 1.27 1.27)) hide)
-    )
-    (property "Datasheet" "" (id 3) (at 45.72 133.35 0)
-      (effects (font (size 1.27 1.27)) hide)
-    )
-  )
-
-  (symbol (lib_id "power:+1V8") (at 45.72 162.56 0) (unit 1)
-    (in_bom yes) (on_board yes)
-    (uuid "ece94ac7-d272-40e0-93a4-90cac9ccaba0")
-    (property "Reference" "#PWR0177" (id 0) (at 45.72 166.37 0)
-      (effects (font (size 1.27 1.27)) hide)
-    )
-    (property "Value" "+1V8" (id 1) (at 46.99 157.48 0))
-    (property "Footprint" "" (id 2) (at 45.72 162.56 0)
-      (effects (font (size 1.27 1.27)) hide)
-    )
-    (property "Datasheet" "" (id 3) (at 45.72 162.56 0)
-      (effects (font (size 1.27 1.27)) hide)
-    )
-  )
-
   (symbol (lib_id "power:GND") (at 24.13 92.71 0) (unit 1)
     (in_bom yes) (on_board yes)
     (uuid "df560806-9593-486a-9780-748bceb527a8")
@@ -2627,15 +2615,15 @@
     )
   )
 
-  (symbol (lib_id "Device:R") (at 53.34 36.83 90) (unit 1)
+  (symbol (lib_id "Device:R") (at 57.15 36.83 90) (unit 1)
     (in_bom yes) (on_board yes)
     (uuid "15e12229-2e0e-4ce6-abff-5c302439b674")
-    (property "Reference" "R74" (id 0) (at 53.34 31.6038 90))
-    (property "Value" "150" (id 1) (at 53.34 33.903 90))
-    (property "Footprint" "Resistor_SMD:R_0603_1608Metric" (id 2) (at 53.34 38.608 90)
+    (property "Reference" "R74" (id 0) (at 57.15 31.6038 90))
+    (property "Value" "150" (id 1) (at 57.15 33.903 90))
+    (property "Footprint" "Resistor_SMD:R_0603_1608Metric" (id 2) (at 57.15 38.608 90)
       (effects (font (size 1.27 1.27)) hide)
     )
-    (property "Datasheet" "~" (id 3) (at 53.34 36.83 0)
+    (property "Datasheet" "~" (id 3) (at 57.15 36.83 0)
       (effects (font (size 1.27 1.27)) hide)
     )
   )

hackamp/hardware/front.kicad_sch

@@ -628,9 +628,9 @@
   (junction (at 261.62 130.81) (diameter 0.9144) (color 0 0 0 0))
   (junction (at 266.7 77.47) (diameter 0.9144) (color 0 0 0 0))
 
-  (no_connect (at 48.26 113.03))
   (no_connect (at 48.26 115.57))
   (no_connect (at 234.95 128.27))
+  (no_connect (at 48.26 113.03))
   (no_connect (at 60.96 115.57))
 
   (wire (pts (xy 22.86 43.18) (xy 25.4 43.18))

hackamp/hardware/hackamp.kicad_pro

@@ -396,7 +396,7 @@
   },
   "sheets": [
     [
-      "c990caaa-c62c-4eb5-8bee-586dc7fd1de2",
+      "6c02bcd0-6524-432b-a051-1d021df2ab33",
       ""
     ],
     [

hackamp/hardware/hackamp.kicad_sch

@@ -1040,6 +1040,9 @@
     (path "/00000000-0000-0000-0000-00005fa5bd36/4385f026-a419-4b2f-9a90-a7611dd568eb"
       (reference "#PWR05") (unit 1) (value "GND") (footprint "")
     )
+    (path "/00000000-0000-0000-0000-00005fa5bd36/68cda14e-5fca-47bc-bafc-c85832d9d661"
+      (reference "#PWR0103") (unit 1) (value "GND") (footprint "")
+    )
     (path "/00000000-0000-0000-0000-00005fa5bd36/00000000-0000-0000-0000-00005fb78f6f"
       (reference "#PWR0119") (unit 1) (value "GND") (footprint "")
     )
@@ -1316,15 +1319,9 @@
     (path "/00000000-0000-0000-0000-00005fa5bd7a/00000000-0000-0000-0000-00005fa6b91a"
       (reference "#PWR0102") (unit 1) (value "+3.3V") (footprint "")
     )
-    (path "/00000000-0000-0000-0000-00005fa5bd7a/00000000-0000-0000-0000-00005fa871d5"
-      (reference "#PWR0103") (unit 1) (value "GND") (footprint "")
-    )
     (path "/00000000-0000-0000-0000-00005fa5bd7a/00000000-0000-0000-0000-00005fa8bff2"
       (reference "#PWR0104") (unit 1) (value "GND") (footprint "")
     )
-    (path "/00000000-0000-0000-0000-00005fa5bd7a/00000000-0000-0000-0000-00005fab6c57"
-      (reference "#PWR0105") (unit 1) (value "GND") (footprint "")
-    )
     (path "/00000000-0000-0000-0000-00005fa5bd7a/00000000-0000-0000-0000-00005fab6c6e"
       (reference "#PWR0106") (unit 1) (value "GND") (footprint "")
     )
@@ -1448,6 +1445,12 @@
     (path "/00000000-0000-0000-0000-00005fa5bd7a/9538ca32-2a66-4b9b-83bc-07e377df3f12"
       (reference "J12") (unit 1) (value "GPIO") (footprint "Connector_PinHeader_2.54mm:PinHeader_2x10_P2.54mm_Vertical")
     )
+    (path "/00000000-0000-0000-0000-00005fa5bd7a/1dbbef67-e1c7-42af-81c5-5484adf37e0f"
+      (reference "L7") (unit 1) (value "600") (footprint "Inductor_SMD:L_0603_1608Metric")
+    )
+    (path "/00000000-0000-0000-0000-00005fa5bd7a/dd9da900-3b5f-43f2-84c8-4f993c3e3484"
+      (reference "L8") (unit 1) (value "600") (footprint "Inductor_SMD:L_0603_1608Metric")
+    )
     (path "/00000000-0000-0000-0000-00005fa5bd7a/00000000-0000-0000-0000-00005fa8a848"
       (reference "R1") (unit 1) (value "1.8k") (footprint "Resistor_SMD:R_0603_1608Metric")
     )
@@ -1499,6 +1502,9 @@
     (path "/00000000-0000-0000-0000-00005fa5bd7a/1a276aa6-b113-4617-8385-287d58f1fd14"
       (reference "Y1") (unit 1) (value "8MHz") (footprint "Crystal:Crystal_SMD_HC49-SD")
     )
+    (path "/00000000-0000-0000-0000-00005fa5bdb1/ce826ad4-b2d1-4064-a7e6-a6ee855b8b46"
+      (reference "#FLG0106") (unit 1) (value "PWR_FLAG") (footprint "")
+    )
     (path "/00000000-0000-0000-0000-00005fa5bdb1/807b9152-fd52-403a-9ed3-cb5ca415864e"
       (reference "#PWR03") (unit 1) (value "GND") (footprint "")
     )
@@ -1517,18 +1523,12 @@
     (path "/00000000-0000-0000-0000-00005fa5bdb1/d10dfa36-91b4-4cfa-8214-82668e624359"
       (reference "#PWR0161") (unit 1) (value "GND") (footprint "")
     )
-    (path "/00000000-0000-0000-0000-00005fa5bdb1/122fa003-3099-42f8-84a7-4aae62f21254"
-      (reference "#PWR0174") (unit 1) (value "+1V8") (footprint "")
-    )
     (path "/00000000-0000-0000-0000-00005fa5bdb1/7d5992a2-bc99-4512-99a4-95d97cc093d3"
       (reference "#PWR0175") (unit 1) (value "+3V3") (footprint "")
     )
     (path "/00000000-0000-0000-0000-00005fa5bdb1/b257cfa8-07a6-4da5-a956-83064ec30ba9"
       (reference "#PWR0176") (unit 1) (value "+3V3") (footprint "")
     )
-    (path "/00000000-0000-0000-0000-00005fa5bdb1/ece94ac7-d272-40e0-93a4-90cac9ccaba0"
-      (reference "#PWR0177") (unit 1) (value "+1V8") (footprint "")
-    )
     (path "/00000000-0000-0000-0000-00005fa5bdb1/f0e2c087-333f-4fe7-8bb0-7e06d74c83bc"
       (reference "#PWR0216") (unit 1) (value "GND") (footprint "")
     )

hackamp/hardware/headphone-amp.kicad_sch

@@ -633,7 +633,6 @@
     )
   )
 
-
   (junction (at 101.6 78.74) (diameter 0.9144) (color 0 0 0 0))
   (junction (at 124.46 99.06) (diameter 0.9144) (color 0 0 0 0))
   (junction (at 139.7 68.58) (diameter 0.9144) (color 0 0 0 0))
@@ -651,12 +650,12 @@
   (junction (at 201.93 111.76) (diameter 0.9144) (color 0 0 0 0))
   (junction (at 217.17 71.12) (diameter 0.9144) (color 0 0 0 0))
 
-  (no_connect (at 127 104.14))
-  (no_connect (at 162.56 96.52))
   (no_connect (at 162.56 86.36))
+  (no_connect (at 162.56 96.52))
   (no_connect (at 127 109.22))
   (no_connect (at 162.56 93.98))
   (no_connect (at 162.56 88.9))
+  (no_connect (at 127 104.14))
 
   (wire (pts (xy 99.06 76.2) (xy 127 76.2))
     (stroke (width 0) (type solid) (color 0 0 0 0))
@@ -937,6 +936,9 @@
   (wire (pts (xy 219.71 86.36) (xy 217.17 86.36))
     (stroke (width 0) (type solid) (color 0 0 0 0))
   )
+  (wire (pts (xy 227.33 91.44) (xy 227.33 93.98))
+    (stroke (width 0) (type solid) (color 0 0 0 0))
+  )
 
   (text "TODO: Check microphone connection again and make configurable - other schematics connect only the ring!"
     (at 215.9 135.89 0)
@@ -1211,6 +1213,21 @@
     )
   )
 
+  (symbol (lib_id "power:GND") (at 227.33 93.98 0) (unit 1)
+    (in_bom yes) (on_board yes)
+    (uuid "68cda14e-5fca-47bc-bafc-c85832d9d661")
+    (property "Reference" "#PWR0103" (id 0) (at 227.33 100.33 0)
+      (effects (font (size 1.27 1.27)) hide)
+    )
+    (property "Value" "GND" (id 1) (at 227.457 98.3742 0))
+    (property "Footprint" "" (id 2) (at 227.33 93.98 0)
+      (effects (font (size 1.27 1.27)) hide)
+    )
+    (property "Datasheet" "" (id 3) (at 227.33 93.98 0)
+      (effects (font (size 1.27 1.27)) hide)
+    )
+  )
+
   (symbol (lib_id "Device:R") (at 105.41 86.36 90) (unit 1)
     (in_bom yes) (on_board yes)
     (uuid "f9a000c0-dfc3-497c-9872-90c06b17b3ac")

hackamp/hardware/processor.kicad_sch

@@ -502,6 +502,137 @@
         )
       )
     )
+    (symbol "Device:L_Ferrite" (pin_numbers hide) (pin_names (offset 1.016) hide) (in_bom yes) (on_board yes)
+      (property "Reference" "L" (id 0) (at -1.27 0 90)
+        (effects (font (size 1.27 1.27)))
+      )
+      (property "Value" "L_Ferrite" (id 1) (at 2.794 0 90)
+        (effects (font (size 1.27 1.27)))
+      )
+      (property "Footprint" "" (id 2) (at 0 0 0)
+        (effects (font (size 1.27 1.27)) hide)
+      )
+      (property "Datasheet" "~" (id 3) (at 0 0 0)
+        (effects (font (size 1.27 1.27)) hide)
+      )
+      (property "ki_keywords" "inductor choke coil reactor magnetic" (id 4) (at 0 0 0)
+        (effects (font (size 1.27 1.27)) hide)
+      )
+      (property "ki_description" "Inductor with ferrite core" (id 5) (at 0 0 0)
+        (effects (font (size 1.27 1.27)) hide)
+      )
+      (property "ki_fp_filters" "Choke_* *Coil* Inductor_* L_*" (id 6) (at 0 0 0)
+        (effects (font (size 1.27 1.27)) hide)
+      )
+      (symbol "L_Ferrite_0_1"
+        (arc (start 0 -2.54) (end 0 -1.27) (radius (at 0 -1.905) (length 0.635) (angles -89.9 89.9))
+          (stroke (width 0)) (fill (type none))
+        )
+        (arc (start 0 -1.27) (end 0 0) (radius (at 0 -0.635) (length 0.635) (angles -89.9 89.9))
+          (stroke (width 0)) (fill (type none))
+        )
+        (arc (start 0 0) (end 0 1.27) (radius (at 0 0.635) (length 0.635) (angles -89.9 89.9))
+          (stroke (width 0)) (fill (type none))
+        )
+        (arc (start 0 1.27) (end 0 2.54) (radius (at 0 1.905) (length 0.635) (angles -89.9 89.9))
+          (stroke (width 0)) (fill (type none))
+        )
+        (polyline
+          (pts
+            (xy 1.016 -2.794)
+            (xy 1.016 -2.286)
+          )
+          (stroke (width 0)) (fill (type none))
+        )
+        (polyline
+          (pts
+            (xy 1.016 -1.778)
+            (xy 1.016 -1.27)
+          )
+          (stroke (width 0)) (fill (type none))
+        )
+        (polyline
+          (pts
+            (xy 1.016 -0.762)
+            (xy 1.016 -0.254)
+          )
+          (stroke (width 0)) (fill (type none))
+        )
+        (polyline
+          (pts
+            (xy 1.016 0.254)
+            (xy 1.016 0.762)
+          )
+          (stroke (width 0)) (fill (type none))
+        )
+        (polyline
+          (pts
+            (xy 1.016 1.27)
+            (xy 1.016 1.778)
+          )
+          (stroke (width 0)) (fill (type none))
+        )
+        (polyline
+          (pts
+            (xy 1.016 2.286)
+            (xy 1.016 2.794)
+          )
+          (stroke (width 0)) (fill (type none))
+        )
+        (polyline
+          (pts
+            (xy 1.524 -2.286)
+            (xy 1.524 -2.794)
+          )
+          (stroke (width 0)) (fill (type none))
+        )
+        (polyline
+          (pts
+            (xy 1.524 -1.27)
+            (xy 1.524 -1.778)
+          )
+          (stroke (width 0)) (fill (type none))
+        )
+        (polyline
+          (pts
+            (xy 1.524 -0.254)
+            (xy 1.524 -0.762)
+          )
+          (stroke (width 0)) (fill (type none))
+        )
+        (polyline
+          (pts
+            (xy 1.524 0.762)
+            (xy 1.524 0.254)
+          )
+          (stroke (width 0)) (fill (type none))
+        )
+        (polyline
+          (pts
+            (xy 1.524 1.778)
+            (xy 1.524 1.27)
+          )
+          (stroke (width 0)) (fill (type none))
+        )
+        (polyline
+          (pts
+            (xy 1.524 2.794)
+            (xy 1.524 2.286)
+          )
+          (stroke (width 0)) (fill (type none))
+        )
+      )
+      (symbol "L_Ferrite_1_1"
+        (pin passive line (at 0 3.81 270) (length 1.27)
+          (name "1" (effects (font (size 1.27 1.27))))
+          (number "1" (effects (font (size 1.27 1.27))))
+        )
+        (pin passive line (at 0 -3.81 90) (length 1.27)
+          (name "2" (effects (font (size 1.27 1.27))))
+          (number "2" (effects (font (size 1.27 1.27))))
+        )
+      )
+    )
     (symbol "Device:R" (pin_numbers hide) (pin_names (offset 0)) (in_bom yes) (on_board yes)
       (property "Reference" "R" (id 0) (at 2.032 0 90)
         (effects (font (size 1.27 1.27)))
@@ -1370,9 +1501,8 @@
     )
   )
 
-
-  (junction (at 20.32 236.22) (diameter 0.9144) (color 0 0 0 0))
-  (junction (at 20.32 273.05) (diameter 0.9144) (color 0 0 0 0))
+  (junction (at 22.86 236.22) (diameter 0.9144) (color 0 0 0 0))
+  (junction (at 22.86 273.05) (diameter 0.9144) (color 0 0 0 0))
   (junction (at 30.48 114.3) (diameter 0.9144) (color 0 0 0 0))
   (junction (at 30.48 119.38) (diameter 0.9144) (color 0 0 0 0))
   (junction (at 30.48 129.54) (diameter 0.9144) (color 0 0 0 0))
@@ -1384,7 +1514,9 @@
   (junction (at 38.1 20.32) (diameter 0.9144) (color 0 0 0 0))
   (junction (at 40.64 50.8) (diameter 0.9144) (color 0 0 0 0))
   (junction (at 43.18 218.44) (diameter 0.9144) (color 0 0 0 0))
+  (junction (at 43.18 238.76) (diameter 0.9144) (color 0 0 0 0))
   (junction (at 43.18 255.27) (diameter 0.9144) (color 0 0 0 0))
+  (junction (at 43.18 275.59) (diameter 0.9144) (color 0 0 0 0))
   (junction (at 46.99 20.32) (diameter 0.9144) (color 0 0 0 0))
   (junction (at 46.99 30.48) (diameter 0.9144) (color 0 0 0 0))
   (junction (at 57.15 20.32) (diameter 0.9144) (color 0 0 0 0))
@@ -1444,48 +1576,48 @@
   (junction (at 179.07 30.48) (diameter 0.9144) (color 0 0 0 0))
   (junction (at 189.23 30.48) (diameter 0.9144) (color 0 0 0 0))
 
-  (no_connect (at 31.75 184.15))
+  (no_connect (at 163.83 210.82))
+  (no_connect (at 163.83 106.68))
+  (no_connect (at 31.75 179.07))
+  (no_connect (at 163.83 175.26))
   (no_connect (at 102.87 99.06))
-  (no_connect (at 102.87 101.6))
-  (no_connect (at 102.87 104.14))
-  (no_connect (at 102.87 106.68))
+  (no_connect (at 163.83 172.72))
+  (no_connect (at 31.75 184.15))
+  (no_connect (at 30.48 228.6))
+  (no_connect (at 163.83 71.12))
   (no_connect (at 102.87 109.22))
-  (no_connect (at 102.87 111.76))
-  (no_connect (at 102.87 114.3))
   (no_connect (at 102.87 116.84))
-  (no_connect (at 102.87 132.08))
-  (no_connect (at 102.87 154.94))
-  (no_connect (at 102.87 157.48))
-  (no_connect (at 102.87 160.02))
-  (no_connect (at 102.87 162.56))
-  (no_connect (at 163.83 71.12))
-  (no_connect (at 163.83 73.66))
-  (no_connect (at 163.83 101.6))
-  (no_connect (at 163.83 104.14))
-  (no_connect (at 163.83 106.68))
-  (no_connect (at 163.83 114.3))
   (no_connect (at 163.83 116.84))
-  (no_connect (at 163.83 121.92))
-  (no_connect (at 163.83 154.94))
-  (no_connect (at 163.83 157.48))
-  (no_connect (at 163.83 160.02))
-  (no_connect (at 163.83 172.72))
-  (no_connect (at 163.83 175.26))
-  (no_connect (at 163.83 200.66))
-  (no_connect (at 163.83 203.2))
-  (no_connect (at 163.83 205.74))
   (no_connect (at 163.83 208.28))
-  (no_connect (at 163.83 210.82))
-  (no_connect (at 163.83 213.36))
+  (no_connect (at 102.87 114.3))
   (no_connect (at 163.83 215.9))
+  (no_connect (at 31.75 181.61))
+  (no_connect (at 163.83 121.92))
+  (no_connect (at 163.83 200.66))
+  (no_connect (at 163.83 160.02))
+  (no_connect (at 163.83 157.48))
+  (no_connect (at 102.87 162.56))
+  (no_connect (at 163.83 154.94))
+  (no_connect (at 102.87 106.68))
+  (no_connect (at 102.87 101.6))
   (no_connect (at 163.83 218.44))
+  (no_connect (at 102.87 160.02))
+  (no_connect (at 163.83 104.14))
+  (no_connect (at 102.87 104.14))
+  (no_connect (at 102.87 132.08))
+  (no_connect (at 163.83 114.3))
+  (no_connect (at 31.75 176.53))
+  (no_connect (at 163.83 101.6))
   (no_connect (at 30.48 265.43))
+  (no_connect (at 163.83 213.36))
+  (no_connect (at 102.87 157.48))
   (no_connect (at 44.45 184.15))
+  (no_connect (at 163.83 73.66))
+  (no_connect (at 102.87 154.94))
+  (no_connect (at 163.83 205.74))
+  (no_connect (at 163.83 203.2))
+  (no_connect (at 102.87 111.76))
   (no_connect (at 44.45 181.61))
-  (no_connect (at 31.75 179.07))
-  (no_connect (at 31.75 181.61))
-  (no_connect (at 30.48 228.6))
-  (no_connect (at 31.75 176.53))
 
   (wire (pts (xy 19.05 124.46) (xy 33.02 124.46))
     (stroke (width 0) (type solid) (color 0 0 0 0))
@@ -1493,19 +1625,19 @@
   (wire (pts (xy 20.32 233.68) (xy 20.32 236.22))
     (stroke (width 0) (type solid) (color 0 0 0 0))
   )
-  (wire (pts (xy 20.32 236.22) (xy 20.32 238.76))
+  (wire (pts (xy 20.32 270.51) (xy 20.32 273.05))
     (stroke (width 0) (type solid) (color 0 0 0 0))
   )
-  (wire (pts (xy 20.32 270.51) (xy 20.32 273.05))
+  (wire (pts (xy 22.86 233.68) (xy 22.86 236.22))
     (stroke (width 0) (type solid) (color 0 0 0 0))
   )
-  (wire (pts (xy 20.32 273.05) (xy 20.32 275.59))
+  (wire (pts (xy 22.86 236.22) (xy 20.32 236.22))
     (stroke (width 0) (type solid) (color 0 0 0 0))
   )
-  (wire (pts (xy 22.86 233.68) (xy 22.86 236.22))
+  (wire (pts (xy 22.86 236.22) (xy 22.86 238.76))
     (stroke (width 0) (type solid) (color 0 0 0 0))
   )
-  (wire (pts (xy 22.86 236.22) (xy 20.32 236.22))
+  (wire (pts (xy 22.86 238.76) (xy 27.94 238.76))
     (stroke (width 0) (type solid) (color 0 0 0 0))
   )
   (wire (pts (xy 22.86 270.51) (xy 22.86 273.05))
@@ -1514,6 +1646,9 @@
   (wire (pts (xy 22.86 273.05) (xy 20.32 273.05))
     (stroke (width 0) (type solid) (color 0 0 0 0))
   )
+  (wire (pts (xy 22.86 275.59) (xy 22.86 273.05))
+    (stroke (width 0) (type solid) (color 0 0 0 0))
+  )
   (wire (pts (xy 24.13 173.99) (xy 31.75 173.99))
     (stroke (width 0) (type solid) (color 0 0 0 0))
   )
@@ -1526,6 +1661,9 @@
   (wire (pts (xy 26.67 50.8) (xy 31.75 50.8))
     (stroke (width 0) (type solid) (color 0 0 0 0))
   )
+  (wire (pts (xy 27.94 275.59) (xy 22.86 275.59))
+    (stroke (width 0) (type solid) (color 0 0 0 0))
+  )
   (wire (pts (xy 30.48 111.76) (xy 30.48 114.3))
     (stroke (width 0) (type solid) (color 0 0 0 0))
   )
@@ -1607,6 +1745,12 @@
   (wire (pts (xy 33.02 255.27) (xy 30.48 255.27))
     (stroke (width 0) (type solid) (color 0 0 0 0))
   )
+  (wire (pts (xy 35.56 238.76) (xy 43.18 238.76))
+    (stroke (width 0) (type solid) (color 0 0 0 0))
+  )
+  (wire (pts (xy 35.56 275.59) (xy 43.18 275.59))
+    (stroke (width 0) (type solid) (color 0 0 0 0))
+  )
   (wire (pts (xy 38.1 20.32) (xy 38.1 17.78))
     (stroke (width 0) (type solid) (color 0 0 0 0))
   )
@@ -1643,6 +1787,9 @@
   (wire (pts (xy 43.18 236.22) (xy 43.18 238.76))
     (stroke (width 0) (type solid) (color 0 0 0 0))
   )
+  (wire (pts (xy 43.18 238.76) (xy 43.18 241.3))
+    (stroke (width 0) (type solid) (color 0 0 0 0))
+  )
   (wire (pts (xy 43.18 255.27) (xy 40.64 255.27))
     (stroke (width 0) (type solid) (color 0 0 0 0))
   )
@@ -1652,6 +1799,9 @@
   (wire (pts (xy 43.18 273.05) (xy 43.18 275.59))
     (stroke (width 0) (type solid) (color 0 0 0 0))
   )
+  (wire (pts (xy 43.18 275.59) (xy 43.18 278.13))
+    (stroke (width 0) (type solid) (color 0 0 0 0))
+  )
   (wire (pts (xy 44.45 173.99) (xy 52.07 173.99))
     (stroke (width 0) (type solid) (color 0 0 0 0))
   )
@@ -2382,6 +2532,10 @@
     (stroke (width 0) (type solid) (color 0 0 0 0))
   )
 
+  (text "WARNING: The USB ports are not isolated.\nIf problems due to the resulting ground loops occur,\na cable with an integrated ADUM3160 should be used."
+    (at 17.78 208.28 0)
+    (effects (font (size 1.27 1.27)) (justify left bottom))
+  )
   (text "BUG: VCAP marked as voltage output?" (at 99.06 57.15 180)
     (effects (font (size 1.27 1.27)) (justify right bottom))
   )
@@ -2821,36 +2975,6 @@
     )
   )
 
-  (symbol (lib_id "power:GND") (at 20.32 238.76 0) (unit 1)
-    (in_bom yes) (on_board yes)
-    (uuid "00000000-0000-0000-0000-00005fa871d5")
-    (property "Reference" "#PWR0103" (id 0) (at 20.32 245.11 0)
-      (effects (font (size 1.27 1.27)) hide)
-    )
-    (property "Value" "GND" (id 1) (at 20.447 243.1542 0))
-    (property "Footprint" "" (id 2) (at 20.32 238.76 0)
-      (effects (font (size 1.27 1.27)) hide)
-    )
-    (property "Datasheet" "" (id 3) (at 20.32 238.76 0)
-      (effects (font (size 1.27 1.27)) hide)
-    )
-  )
-
-  (symbol (lib_id "power:GND") (at 20.32 275.59 0) (unit 1)
-    (in_bom yes) (on_board yes)
-    (uuid "00000000-0000-0000-0000-00005fab6c57")
-    (property "Reference" "#PWR0105" (id 0) (at 20.32 281.94 0)
-      (effects (font (size 1.27 1.27)) hide)
-    )
-    (property "Value" "GND" (id 1) (at 20.447 279.9842 0))
-    (property "Footprint" "" (id 2) (at 20.32 275.59 0)
-      (effects (font (size 1.27 1.27)) hide)
-    )
-    (property "Datasheet" "" (id 3) (at 20.32 275.59 0)
-      (effects (font (size 1.27 1.27)) hide)
-    )
-  )
-
   (symbol (lib_id "power:GND") (at 30.48 139.7 0) (unit 1)
     (in_bom yes) (on_board yes)
     (uuid "15e726bc-9640-45b9-a31e-9aad8d8119f8")
@@ -2881,32 +3005,32 @@
     )
   )
 
-  (symbol (lib_id "power:GND") (at 43.18 238.76 0) (unit 1)
+  (symbol (lib_id "power:GND") (at 43.18 241.3 0) (unit 1)
     (in_bom yes) (on_board yes)
     (uuid "00000000-0000-0000-0000-00005fa8bff2")
-    (property "Reference" "#PWR0104" (id 0) (at 43.18 245.11 0)
+    (property "Reference" "#PWR0104" (id 0) (at 43.18 247.65 0)
       (effects (font (size 1.27 1.27)) hide)
     )
-    (property "Value" "GND" (id 1) (at 43.307 243.1542 0))
-    (property "Footprint" "" (id 2) (at 43.18 238.76 0)
+    (property "Value" "GND" (id 1) (at 43.307 245.6942 0))
+    (property "Footprint" "" (id 2) (at 43.18 241.3 0)
       (effects (font (size 1.27 1.27)) hide)
     )
-    (property "Datasheet" "" (id 3) (at 43.18 238.76 0)
+    (property "Datasheet" "" (id 3) (at 43.18 241.3 0)
       (effects (font (size 1.27 1.27)) hide)
     )
   )
 
-  (symbol (lib_id "power:GND") (at 43.18 275.59 0) (unit 1)
+  (symbol (lib_id "power:GND") (at 43.18 278.13 0) (unit 1)
     (in_bom yes) (on_board yes)
     (uuid "00000000-0000-0000-0000-00005fab6c6e")
-    (property "Reference" "#PWR0106" (id 0) (at 43.18 281.94 0)
+    (property "Reference" "#PWR0106" (id 0) (at 43.18 284.48 0)
       (effects (font (size 1.27 1.27)) hide)
     )
-    (property "Value" "GND" (id 1) (at 43.307 279.9842 0))
-    (property "Footprint" "" (id 2) (at 43.18 275.59 0)
+    (property "Value" "GND" (id 1) (at 43.307 282.5242 0))
+    (property "Footprint" "" (id 2) (at 43.18 278.13 0)
       (effects (font (size 1.27 1.27)) hide)
     )
-    (property "Datasheet" "" (id 3) (at 43.18 275.59 0)
+    (property "Datasheet" "" (id 3) (at 43.18 278.13 0)
       (effects (font (size 1.27 1.27)) hide)
     )
   )
@@ -3031,6 +3155,32 @@
     )
   )
 
+  (symbol (lib_id "Device:L_Ferrite") (at 31.75 238.76 90) (unit 1)
+    (in_bom yes) (on_board yes)
+    (uuid "1dbbef67-e1c7-42af-81c5-5484adf37e0f")
+    (property "Reference" "L7" (id 0) (at 31.75 232.41 90))
+    (property "Value" "600" (id 1) (at 31.75 234.95 90))
+    (property "Footprint" "Inductor_SMD:L_0603_1608Metric" (id 2) (at 31.75 238.76 0)
+      (effects (font (size 1.27 1.27)) hide)
+    )
+    (property "Datasheet" "~" (id 3) (at 31.75 238.76 0)
+      (effects (font (size 1.27 1.27)) hide)
+    )
+  )
+
+  (symbol (lib_id "Device:L_Ferrite") (at 31.75 275.59 90) (unit 1)
+    (in_bom yes) (on_board yes)
+    (uuid "dd9da900-3b5f-43f2-84c8-4f993c3e3484")
+    (property "Reference" "L8" (id 0) (at 31.75 269.24 90))
+    (property "Value" "600" (id 1) (at 31.75 271.78 90))
+    (property "Footprint" "Inductor_SMD:L_0603_1608Metric" (id 2) (at 31.75 275.59 0)
+      (effects (font (size 1.27 1.27)) hide)
+    )
+    (property "Datasheet" "~" (id 3) (at 31.75 275.59 0)
+      (effects (font (size 1.27 1.27)) hide)
+    )
+  )
+
   (symbol (lib_id "Device:Crystal_Small") (at 82.55 83.82 90) (unit 1)
     (in_bom yes) (on_board yes)
     (uuid "1a276aa6-b113-4617-8385-287d58f1fd14")