hardware: Small changes to the PCB (hierarchical labels, footprints).

hackamp/hardware/bluetooth.kicad_sch

     (effects (font (size 1.27 1.27)) (justify right bottom))
   )
 
-  (symbol (lib_id "power:GND") (at 39.37 71.12 0)
+  (symbol (lib_id "power:GND") (at 39.37 71.12 0) (unit 1)
     (in_bom yes) (on_board yes)
     (uuid "00000000-0000-0000-0000-00005fb8557b")
     (property "Reference" "#PWR0107" (id 0) (at 39.37 77.47 0)
     )
   )
 
-  (symbol (lib_id "Device:R") (at 55.88 58.42 270)
+  (symbol (lib_id "Device:R") (at 55.88 58.42 270) (unit 1)
     (in_bom yes) (on_board yes)
     (uuid "00000000-0000-0000-0000-00005fb855a5")
     (property "Reference" "R9" (id 0) (at 55.88 53.1622 90))
     )
   )
 
-  (symbol (lib_id "Device:R") (at 68.58 55.88 270)
+  (symbol (lib_id "Device:R") (at 68.58 55.88 270) (unit 1)
     (in_bom yes) (on_board yes)
     (uuid "00000000-0000-0000-0000-00005fb8559f")
     (property "Reference" "R10" (id 0) (at 68.58 50.6222 90))
     )
   )
 
-  (symbol (lib_id "Connector:USB_B_Micro") (at 41.91 55.88 0)
+  (symbol (lib_id "Connector:USB_B_Micro") (at 41.91 55.88 0) (unit 1)
     (in_bom yes) (on_board yes)
     (uuid "00000000-0000-0000-0000-00005fb85574")
     (property "Reference" "J3" (id 0) (at 43.3578 44.0182 0))

hackamp/hardware/front.kicad_sch

   )
 
 
+  (hierarchical_label "ENC_A" (shape input) (at 223.52 48.26 180)
+    (effects (font (size 1.27 1.27)) (justify right))
+  )
+  (hierarchical_label "ENC_B" (shape input) (at 223.52 52.07 180)
+    (effects (font (size 1.27 1.27)) (justify right))
+  )
+  (hierarchical_label "PWR" (shape input) (at 228.6 66.04 180)
+    (effects (font (size 1.27 1.27)) (justify right))
+  )
+  (hierarchical_label "ENC_SW" (shape input) (at 247.65 48.26 0)
+    (effects (font (size 1.27 1.27)) (justify left))
+  )
+
   (symbol (lib_id "Switch:SW_SPDT") (at 236.22 66.04 0) (unit 1)
     (in_bom yes) (on_board yes)
     (uuid "00000000-0000-0000-0000-00005fb74833")
     (property "Reference" "SW2" (id 0) (at 236.22 58.801 0))
     (property "Value" "Power" (id 1) (at 236.22 61.1124 0))
-    (property "Footprint" "" (id 2) (at 236.22 66.04 0)
+    (property "Footprint" "HackAmp-Footprints:SW_Lever_1P2T_E-Switch_SP1T2B4M7QE" (id 2) (at 236.22 66.04 0)
       (effects (font (size 1.27 1.27)) hide)
     )
     (property "Datasheet" "~" (id 3) (at 236.22 66.04 0)
       (effects (font (size 1.27 1.27)) hide)
     )
+    (property "Part Name" "Miyama MS-500-A-V-T" (id 4) (at 236.22 66.04 0)
+      (effects (font (size 1.27 1.27)) hide)
+    )
   )
 
   (symbol (lib_id "Device:RotaryEncoder_Switch") (at 237.49 50.8 0) (unit 1)

hackamp/hardware/hackamp.kicad_pro

   },
   "sheets": [
     [
-      "8c5252a5-9cd4-43fa-b2e5-a58dd7901a93",
+      "e8bc51b1-aa64-488d-9e82-632ab9274b12",
       ""
     ],
     [

hackamp/hardware/hackamp.kicad_sch

     (property "Dateiname Blatt" "front.kicad_sch" (id 1) (at 162.56 100.8385 0)
       (effects (font (size 1.27 1.27)) (justify left top))
     )
+    (pin "PWR" input (at 162.56 78.74 180)
+      (effects (font (size 1.27 1.27)) (justify left))
+    )
+    (pin "ENC_B" input (at 162.56 86.36 180)
+      (effects (font (size 1.27 1.27)) (justify left))
+    )
+    (pin "ENC_A" input (at 162.56 88.9 180)
+      (effects (font (size 1.27 1.27)) (justify left))
+    )
+    (pin "ENC_SW" input (at 162.56 91.44 180)
+      (effects (font (size 1.27 1.27)) (justify left))
+    )
   )
 
   (sheet (at 35.56 113.03) (size 27.94 34.29)
     (property "Dateiname Blatt" "speaker-amp.kicad_sch" (id 1) (at 21.59 103.3785 0)
       (effects (font (size 1.27 1.27)) (justify left top))
     )
+    (pin "SDI" input (at 63.5 92.71 0)
+      (effects (font (size 1.27 1.27)) (justify right))
+    )
+    (pin "~SPK_SD" input (at 63.5 74.93 0)
+      (effects (font (size 1.27 1.27)) (justify right))
+    )
+    (pin "~SPK_FAULT" output (at 63.5 72.39 0)
+      (effects (font (size 1.27 1.27)) (justify right))
+    )
+    (pin "SDA" bidirectional (at 63.5 80.01 0)
+      (effects (font (size 1.27 1.27)) (justify right))
+    )
+    (pin "MCLK" input (at 63.5 87.63 0)
+      (effects (font (size 1.27 1.27)) (justify right))
+    )
+    (pin "CK" input (at 63.5 90.17 0)
+      (effects (font (size 1.27 1.27)) (justify right))
+    )
+    (pin "WS" input (at 63.5 95.25 0)
+      (effects (font (size 1.27 1.27)) (justify right))
+    )
+    (pin "SCL" bidirectional (at 63.5 82.55 0)
+      (effects (font (size 1.27 1.27)) (justify right))
+    )
   )
 
   (sheet_instances
       (reference "SW1") (unit 1) (value "Volume") (footprint "")
     )
     (path "/00000000-0000-0000-0000-00005fb71226/00000000-0000-0000-0000-00005fb74833"
-      (reference "SW2") (unit 1) (value "Power") (footprint "")
+      (reference "SW2") (unit 1) (value "Power") (footprint "HackAmp-Footprints:SW_Lever_1P2T_E-Switch_SP1T2B4M7QE")
     )
     (path "/00000000-0000-0000-0000-00005fb71226/00000000-0000-0000-0000-00005fb70aa8"
       (reference "U4") (unit 1) (value "TSSP58P38") (footprint "OptoDevice:Vishay_MINICAST-3Pin")

hackamp/hardware/headphone-amp.kicad_sch

   (junction (at 191.77 36.83) (diameter 0.9144) (color 0 0 0 0))
   (junction (at 201.93 111.76) (diameter 0.9144) (color 0 0 0 0))
 
-  (no_connect (at 162.56 88.9))
-  (no_connect (at 162.56 96.52))
-  (no_connect (at 162.56 86.36))
-  (no_connect (at 127 104.14))
   (no_connect (at 217.17 114.3))
-  (no_connect (at 127 109.22))
   (no_connect (at 162.56 93.98))
-  (no_connect (at 217.17 116.84))
   (no_connect (at 201.93 73.66))
+  (no_connect (at 127 109.22))
+  (no_connect (at 127 104.14))
+  (no_connect (at 217.17 116.84))
+  (no_connect (at 162.56 88.9))
+  (no_connect (at 162.56 86.36))
+  (no_connect (at 162.56 96.52))
 
   (wire (pts (xy 137.16 68.58) (xy 139.7 68.58))
     (stroke (width 0) (type solid) (color 0 0 0 0))
   (hierarchical_label "SDI" (shape input) (at 97.79 78.74 180)
     (effects (font (size 1.27 1.27)) (justify right))
   )
-  (hierarchical_label "SDO" (shape input) (at 97.79 81.28 180)
+  (hierarchical_label "SDO" (shape output) (at 97.79 81.28 180)
     (effects (font (size 1.27 1.27)) (justify right))
   )
-  (hierarchical_label "SCL" (shape input) (at 97.79 88.9 180)
+  (hierarchical_label "SCL" (shape bidirectional) (at 97.79 88.9 180)
     (effects (font (size 1.27 1.27)) (justify right))
   )
-  (hierarchical_label "SDA" (shape input) (at 97.79 91.44 180)
+  (hierarchical_label "SDA" (shape bidirectional) (at 97.79 91.44 180)
     (effects (font (size 1.27 1.27)) (justify right))
   )
   (hierarchical_label "MCLK" (shape input) (at 102.87 106.68 180)
   (hierarchical_label "3.3V" (shape input) (at 168.91 24.13 180)
     (effects (font (size 1.27 1.27)) (justify right))
   )
-  (hierarchical_label "HP_DETECT" (shape input) (at 256.54 59.69 0)
+  (hierarchical_label "HP_DETECT" (shape output) (at 256.54 59.69 0)
     (effects (font (size 1.27 1.27)) (justify left))
   )
-  (hierarchical_label "MIC_DETECT" (shape input) (at 256.54 63.5 0)
+  (hierarchical_label "MIC_DETECT" (shape output) (at 256.54 63.5 0)
     (effects (font (size 1.27 1.27)) (justify left))
   )
 
     )
   )
 
-  (symbol (lib_id "Device:C_Polarized") (at 173.99 68.58 90)
+  (symbol (lib_id "Device:C_Polarized") (at 173.99 68.58 90) (unit 1)
     (in_bom yes) (on_board yes)
     (uuid "00000000-0000-0000-0000-00005fb75a99")
     (property "Reference" "C11" (id 0) (at 173.99 62.103 90))
     )
   )
 
-  (symbol (lib_id "Device:C_Polarized") (at 173.99 78.74 90)
+  (symbol (lib_id "Device:C_Polarized") (at 173.99 78.74 90) (unit 1)
     (in_bom yes) (on_board yes)
     (uuid "00000000-0000-0000-0000-00005fb761de")
     (property "Reference" "C12" (id 0) (at 173.99 72.263 90))
     )
   )
 
-  (symbol (lib_id "Device:C_Polarized") (at 184.15 111.76 90)
+  (symbol (lib_id "Device:C_Polarized") (at 184.15 111.76 90) (unit 1)
     (in_bom yes) (on_board yes)
     (uuid "00000000-0000-0000-0000-00005fbbe29c")
     (property "Reference" "C18" (id 0) (at 184.15 105.283 90))

hackamp/hardware/power-supply.kicad_sch

     )
   )
 
-  (symbol (lib_id "Device:C_Polarized") (at 63.5 46.99 0)
+  (symbol (lib_id "Device:C_Polarized") (at 63.5 46.99 0) (unit 1)
     (in_bom yes) (on_board yes)
     (uuid "00000000-0000-0000-0000-00005faf6729")
     (property "Reference" "C1" (id 0) (at 66.4972 45.8216 0)
     )
   )
 
-  (symbol (lib_id "Device:C_Polarized") (at 91.44 46.99 0)
+  (symbol (lib_id "Device:C_Polarized") (at 91.44 46.99 0) (unit 1)
     (in_bom yes) (on_board yes)
     (uuid "00000000-0000-0000-0000-00005faf80b5")
     (property "Reference" "C3" (id 0) (at 94.4372 45.8216 0)

hackamp/hardware/speaker-amp.kicad_sch

   (lib_symbols
   )
 
+
+  (hierarchical_label "~SPK_FAULT" (shape output) (at 48.26 62.23 180)
+    (effects (font (size 1.27 1.27)) (justify right))
+  )
+  (hierarchical_label "~SPK_SD" (shape input) (at 48.26 64.77 180)
+    (effects (font (size 1.27 1.27)) (justify right))
+  )
+  (hierarchical_label "SDA" (shape bidirectional) (at 48.26 68.58 180)
+    (effects (font (size 1.27 1.27)) (justify right))
+  )
+  (hierarchical_label "SCL" (shape bidirectional) (at 48.26 71.12 180)
+    (effects (font (size 1.27 1.27)) (justify right))
+  )
+  (hierarchical_label "MCLK" (shape input) (at 48.26 77.47 180)
+    (effects (font (size 1.27 1.27)) (justify right))
+  )
+  (hierarchical_label "CK" (shape input) (at 48.26 80.01 180)
+    (effects (font (size 1.27 1.27)) (justify right))
+  )
+  (hierarchical_label "WS" (shape input) (at 48.26 82.55 180)
+    (effects (font (size 1.27 1.27)) (justify right))
+  )
+  (hierarchical_label "SDI" (shape input) (at 48.26 85.09 180)
+    (effects (font (size 1.27 1.27)) (justify right))
+  )
 )