ERC report (2026-03-09T11:15:03+1300, Encoding UTF8)

***** Sheet /
[unconnected_wire_endpoint]: Unconnected wire endpoint
    ; warning
    @(92.71 mm, 78.74 mm): Vertical Wire, length 19.05 mm
[unconnected_wire_endpoint]: Unconnected wire endpoint
    ; warning
    @(95.25 mm, 78.74 mm): Vertical Wire, length 19.05 mm
[unconnected_wire_endpoint]: Unconnected wire endpoint
    ; warning
    @(97.79 mm, 78.74 mm): Vertical Wire, length 19.05 mm
[unconnected_wire_endpoint]: Unconnected wire endpoint
    ; warning
    @(110.49 mm, 106.68 mm): Horizontal Wire, length 15.24 mm
[unconnected_wire_endpoint]: Unconnected wire endpoint
    ; warning
    @(110.49 mm, 110.49 mm): Horizontal Wire, length 19.05 mm
[unconnected_wire_endpoint]: Unconnected wire endpoint
    ; warning
    @(110.49 mm, 113.03 mm): Horizontal Wire, length 21.59 mm
[pin_not_connected]: Pin not connected
    ; error
    @(215.90 mm, 60.96 mm): Hierarchical Sheet Pin ENABLE
[pin_not_connected]: Pin not connected
    ; error
    @(215.90 mm, 63.50 mm): Hierarchical Sheet Pin PHASE
[pin_not_connected]: Pin not connected
    ; error
    @(215.90 mm, 66.04 mm): Hierarchical Sheet Pin SENSEOUT
[pin_not_connected]: Pin not connected
    ; error
    @(215.90 mm, 80.01 mm): Hierarchical Sheet Pin ENABLE
[pin_not_connected]: Pin not connected
    ; error
    @(215.90 mm, 82.55 mm): Hierarchical Sheet Pin PHASE
[pin_not_connected]: Pin not connected
    ; error
    @(215.90 mm, 85.09 mm): Hierarchical Sheet Pin SENSEOUT
[pin_not_connected]: Pin not connected
    ; error
    @(215.90 mm, 99.06 mm): Hierarchical Sheet Pin ENABLE
[pin_not_connected]: Pin not connected
    ; error
    @(215.90 mm, 101.60 mm): Hierarchical Sheet Pin PHASE
[pin_not_connected]: Pin not connected
    ; error
    @(215.90 mm, 104.14 mm): Hierarchical Sheet Pin SENSEOUT
[lib_symbol_mismatch]: Symbol 'LMR33630BDDA' doesn't match copy in library 'Regulator_Switching'
    ; warning
    @(82.55 mm, 31.75 mm): Symbol U3 [LMR33630BDDA]
[label_dangling]: Label not connected to anything
    ; error
    @(24.13 mm, 167.64 mm): Hierarchical Label 'POWER_SWITCH_EN'
[label_dangling]: Label not connected to anything
    ; error
    @(58.42 mm, 168.91 mm): Hierarchical Label 'PWR_SWITCH_PG'
[footprint_link_issues]: The current configuration does not include the footprint library ''.
    ; warning
    @(99.06 mm, 154.94 mm): Symbol U4 [NCP45770IMN24TWG]
[lib_symbol_mismatch]: Symbol 'NCP45770IMN24TWG' doesn't match copy in library 'power_switch'
    ; warning
    @(99.06 mm, 154.94 mm): Symbol U4 [NCP45770IMN24TWG]
[lib_symbol_mismatch]: Symbol 'TPS2116DRL' doesn't match copy in library 'Power_Management'
    ; warning
    @(217.17 mm, 27.94 mm): Symbol U6 [TPS2116DRL]
[lib_symbol_mismatch]: Symbol 'USB_C_Receptacle_USB2.0_14P' doesn't match copy in library 'Connector'
    ; warning
    @(220.98 mm, 123.19 mm): Symbol J1 [USB_C_Receptacle_USB2.0_14P]
[label_dangling]: Label not connected to anything
    ; error
    @(115.57 mm, 49.53 mm): Label 'boot'
[label_dangling]: Label not connected to anything
    ; error
    @(57.15 mm, 92.71 mm): Hierarchical Label '!PWR_ALERT'
[lib_symbol_mismatch]: Symbol 'INA228' doesn't match copy in library 'Sensor_Energy'
    ; warning
    @(78.74 mm, 85.09 mm): Symbol U11 [INA228]
[label_dangling]: Label not connected to anything
    ; error
    @(63.50 mm, 63.50 mm): Hierarchical Label 'SDA'
[label_dangling]: Label not connected to anything
    ; error
    @(63.50 mm, 68.58 mm): Hierarchical Label 'SCL'
[lib_symbol_mismatch]: Symbol 'TXS0102DCT' doesn't match copy in library 'Logic_LevelTranslator'
    ; warning
    @(85.09 mm, 66.04 mm): Symbol U15 [TXS0102DCT]
[label_dangling]: Label not connected to anything
    ; error
    @(63.50 mm, 132.08 mm): Hierarchical Label 'RXD'
[label_dangling]: Label not connected to anything
    ; error
    @(63.50 mm, 137.16 mm): Hierarchical Label 'TXD'
[lib_symbol_mismatch]: Symbol 'TXS0102DCT' doesn't match copy in library 'Logic_LevelTranslator'
    ; warning
    @(85.09 mm, 134.62 mm): Symbol U16 [TXS0102DCT]
[label_dangling]: Label not connected to anything
    ; error
    @(176.53 mm, 77.47 mm): Hierarchical Label 'SERVO_EN'
[label_dangling]: Label not connected to anything
    ; error
    @(176.53 mm, 82.55 mm): Hierarchical Label 'SERVO_1'
[label_dangling]: Label not connected to anything
    ; error
    @(176.53 mm, 87.63 mm): Hierarchical Label 'SERVO_2'
[label_dangling]: Label not connected to anything
    ; error
    @(176.53 mm, 92.71 mm): Hierarchical Label 'SERVO_3'
[label_dangling]: Label not connected to anything
    ; error
    @(176.53 mm, 97.79 mm): Hierarchical Label 'SERVO_4'
[lib_symbol_mismatch]: Symbol 'TXB0104D' doesn't match copy in library 'Logic_LevelTranslator'
    ; warning
    @(196.85 mm, 90.17 mm): Symbol U17 [TXB0104D]
[lib_symbol_issues]: The symbol library 'esp32-racer-lib' was not found at '/home/zekkos/Documents/ta/461/esp32-racer/hardware/esp32-racer-lib/esp32-racer-lib.kicad_sym'.
    ; warning
    @(129.54 mm, 91.44 mm): Symbol U10 [DRV8701E]
[lib_symbol_issues]: The symbol library 'esp32-racer-lib' was not found at '/home/zekkos/Documents/ta/461/esp32-racer/hardware/esp32-racer-lib/esp32-racer-lib.kicad_sym'.
    ; warning
    @(162.56 mm, 71.12 mm): Symbol Q15 [DOZ50N03]
[lib_symbol_issues]: The symbol library 'esp32-racer-lib' was not found at '/home/zekkos/Documents/ta/461/esp32-racer/hardware/esp32-racer-lib/esp32-racer-lib.kicad_sym'.
    ; warning
    @(162.56 mm, 81.28 mm): Symbol Q16 [DOZ50N03]
[lib_symbol_issues]: The symbol library 'esp32-racer-lib' was not found at '/home/zekkos/Documents/ta/461/esp32-racer/hardware/esp32-racer-lib/esp32-racer-lib.kicad_sym'.
    ; warning
    @(180.34 mm, 86.36 mm): Symbol Q17 [DOZ50N03]
[lib_symbol_issues]: The symbol library 'esp32-racer-lib' was not found at '/home/zekkos/Documents/ta/461/esp32-racer/hardware/esp32-racer-lib/esp32-racer-lib.kicad_sym'.
    ; warning
    @(180.34 mm, 96.52 mm): Symbol Q18 [DOZ50N03]
[label_dangling]: Label not connected to anything
    ; error
    @(104.14 mm, 90.17 mm): Hierarchical Label 'ENABLE'
[label_dangling]: Label not connected to anything
    ; error
    @(104.14 mm, 92.71 mm): Hierarchical Label 'PHASE'
[label_dangling]: Label not connected to anything
    ; error
    @(104.14 mm, 95.25 mm): Hierarchical Label 'SENSEOUT'

***** Sheet /MOTOR_DRIVER2/
[power_pin_not_driven]: Input Power pin not driven by any Output Power pins
    ; error
    @(110.49 mm, 58.42 mm): Symbol #PWR088 Pin 1 [Power input, Line]
[pin_not_driven]: Input pin not driven by any Output pins
    ; error
    @(113.03 mm, 90.17 mm): Symbol U10 Pin 14 [EN, Input, Line]
[pin_not_driven]: Input pin not driven by any Output pins
    ; error
    @(113.03 mm, 92.71 mm): Symbol U10 Pin 15 [PH, Input, Line]

***** Sheet /MCU/
[pin_not_connected]: Pin not connected
    ; error
    @(101.60 mm, 52.07 mm): Symbol U2 Pin 39 [IO1, Bidirectional, Line]
[pin_not_connected]: Pin not connected
    ; error
    @(101.60 mm, 57.15 mm): Symbol U2 Pin 15 [IO3, Bidirectional, Line]
[pin_not_connected]: Pin not connected
    ; error
    @(101.60 mm, 59.69 mm): Symbol U2 Pin 4 [IO4, Bidirectional, Line]
[pin_not_connected]: Pin not connected
    ; error
    @(101.60 mm, 62.23 mm): Symbol U2 Pin 5 [IO5, Bidirectional, Line]
[pin_not_connected]: Pin not connected
    ; error
    @(101.60 mm, 64.77 mm): Symbol U2 Pin 6 [IO6, Bidirectional, Line]
[pin_not_connected]: Pin not connected
    ; error
    @(101.60 mm, 67.31 mm): Symbol U2 Pin 7 [IO7, Bidirectional, Line]
[pin_not_connected]: Pin not connected
    ; error
    @(101.60 mm, 69.85 mm): Symbol U2 Pin 12 [IO8, Bidirectional, Line]
[pin_not_connected]: Pin not connected
    ; error
    @(101.60 mm, 72.39 mm): Symbol U2 Pin 17 [IO9, Bidirectional, Line]
[pin_not_connected]: Pin not connected
    ; error
    @(101.60 mm, 74.93 mm): Symbol U2 Pin 18 [IO10, Bidirectional, Line]
[pin_not_connected]: Pin not connected
    ; error
    @(101.60 mm, 77.47 mm): Symbol U2 Pin 19 [IO11, Bidirectional, Line]
[pin_not_connected]: Pin not connected
    ; error
    @(101.60 mm, 80.01 mm): Symbol U2 Pin 20 [IO12, Bidirectional, Line]
[pin_not_connected]: Pin not connected
    ; error
    @(101.60 mm, 82.55 mm): Symbol U2 Pin 21 [IO13, Bidirectional, Line]
[pin_not_connected]: Pin not connected
    ; error
    @(101.60 mm, 85.09 mm): Symbol U2 Pin 22 [IO14, Bidirectional, Line]
[pin_not_connected]: Pin not connected
    ; error
    @(101.60 mm, 87.63 mm): Symbol U2 Pin 8 [IO15, Bidirectional, Line]
[pin_not_connected]: Pin not connected
    ; error
    @(101.60 mm, 90.17 mm): Symbol U2 Pin 9 [IO16, Bidirectional, Line]
[pin_not_connected]: Pin not connected
    ; error
    @(101.60 mm, 92.71 mm): Symbol U2 Pin 10 [IO17, Bidirectional, Line]
[pin_not_connected]: Pin not connected
    ; error
    @(101.60 mm, 95.25 mm): Symbol U2 Pin 11 [IO18, Bidirectional, Line]
[pin_not_connected]: Pin not connected
    ; error
    @(101.60 mm, 102.87 mm): Symbol U2 Pin 23 [IO21, Bidirectional, Line]
[pin_not_connected]: Pin not connected
    ; error
    @(140.97 mm, 35.56 mm): Symbol R10 Pin 1 [Passive, Line]
[pin_not_connected]: Pin not connected
    ; error
    @(101.60 mm, 105.41 mm): Symbol U2 Pin 31 [IO38, Bidirectional, Line]
[pin_not_connected]: Pin not connected
    ; error
    @(101.60 mm, 107.95 mm): Symbol U2 Pin 32 [MTCK/IO39, Bidirectional, Line]
[pin_not_connected]: Pin not connected
    ; error
    @(101.60 mm, 110.49 mm): Symbol U2 Pin 33 [MTDO/IO40, Bidirectional, Line]
[pin_not_connected]: Pin not connected
    ; error
    @(101.60 mm, 113.03 mm): Symbol U2 Pin 34 [MTDI/IO41, Bidirectional, Line]
[pin_not_connected]: Pin not connected
    ; error
    @(101.60 mm, 115.57 mm): Symbol U2 Pin 35 [MTMS/IO42, Bidirectional, Line]
[pin_not_connected]: Pin not connected
    ; error
    @(101.60 mm, 128.27 mm): Symbol U2 Pin 24 [IO47, Bidirectional, Line]
[pin_not_connected]: Pin not connected
    ; error
    @(101.60 mm, 130.81 mm): Symbol U2 Pin 25 [IO48, Bidirectional, Line]
[pin_not_connected]: Pin not connected
    ; error
    @(177.80 mm, 44.45 mm): Symbol D3 Pin 2 [DIN, Input, Line]
[pin_not_driven]: Input pin not driven by any Output pins
    ; error
    @(177.80 mm, 44.45 mm): Symbol D3 Pin 2 [DIN, Input, Line]
[power_pin_not_driven]: Input Power pin not driven by any Output Power pins
    ; error
    @(185.42 mm, 21.59 mm): Symbol #PWR017 Pin 1 [Power input, Line]
[pin_not_connected]: Pin not connected
    ; error
    @(185.42 mm, 52.07 mm): Symbol D3 Pin 1 [VSS, Power input, Line]
[power_pin_not_driven]: Input Power pin not driven by any Output Power pins
    ; error
    @(185.42 mm, 52.07 mm): Symbol D3 Pin 1 [VSS, Power input, Line]
[pin_not_connected]: Pin not connected
    ; error
    @(193.04 mm, 44.45 mm): Symbol D3 Pin 4 [DOUT, Output, Line]
[pin_not_connected]: Pin not connected
    ; error
    @(198.12 mm, 44.45 mm): Symbol D4 Pin 2 [DIN, Input, Line]
[pin_not_driven]: Input pin not driven by any Output pins
    ; error
    @(198.12 mm, 44.45 mm): Symbol D4 Pin 2 [DIN, Input, Line]
[pin_not_connected]: Pin not connected
    ; error
    @(205.74 mm, 52.07 mm): Symbol D4 Pin 1 [VSS, Power input, Line]
[power_pin_not_driven]: Input Power pin not driven by any Output Power pins
    ; error
    @(205.74 mm, 52.07 mm): Symbol D4 Pin 1 [VSS, Power input, Line]
[pin_not_connected]: Pin not connected
    ; error
    @(213.36 mm, 44.45 mm): Symbol D4 Pin 4 [DOUT, Output, Line]
[pin_not_connected]: Pin not connected
    ; error
    @(217.17 mm, 44.45 mm): Symbol D5 Pin 2 [DIN, Input, Line]
[pin_not_driven]: Input pin not driven by any Output pins
    ; error
    @(217.17 mm, 44.45 mm): Symbol D5 Pin 2 [DIN, Input, Line]
[pin_not_connected]: Pin not connected
    ; error
    @(224.79 mm, 52.07 mm): Symbol D5 Pin 1 [VSS, Power input, Line]
[power_pin_not_driven]: Input Power pin not driven by any Output Power pins
    ; error
    @(224.79 mm, 52.07 mm): Symbol D5 Pin 1 [VSS, Power input, Line]
[pin_not_connected]: Pin not connected
    ; error
    @(245.11 mm, 52.07 mm): Symbol D6 Pin 1 [VSS, Power input, Line]
[power_pin_not_driven]: Input Power pin not driven by any Output Power pins
    ; error
    @(245.11 mm, 52.07 mm): Symbol D6 Pin 1 [VSS, Power input, Line]
[pin_not_connected]: Pin not connected
    ; error
    @(252.73 mm, 44.45 mm): Symbol D6 Pin 4 [DOUT, Output, Line]
[pin_not_connected]: Pin not connected
    ; error
    @(256.54 mm, 44.45 mm): Symbol D7 Pin 2 [DIN, Input, Line]
[pin_not_driven]: Input pin not driven by any Output pins
    ; error
    @(256.54 mm, 44.45 mm): Symbol D7 Pin 2 [DIN, Input, Line]
[pin_not_connected]: Pin not connected
    ; error
    @(264.16 mm, 52.07 mm): Symbol D7 Pin 1 [VSS, Power input, Line]
[power_pin_not_driven]: Input Power pin not driven by any Output Power pins
    ; error
    @(264.16 mm, 52.07 mm): Symbol D7 Pin 1 [VSS, Power input, Line]
[pin_not_connected]: Pin not connected
    ; error
    @(271.78 mm, 44.45 mm): Symbol D7 Pin 4 [DOUT, Output, Line]

***** Sheet /PWR/
[power_pin_not_driven]: Input Power pin not driven by any Output Power pins
    ; error
    @(20.32 mm, 22.86 mm): Symbol #PWR022 Pin 1 [Power input, Line]
[pin_not_connected]: Pin not connected
    ; error
    @(82.55 mm, 48.26 mm): Symbol U3 Hidden pin 9 [GND, Passive, Line]
[similar_labels]: Labels are similar (lower/upper case difference only)
    ; warning
    @(133.35 mm, 34.29 mm): Label '5v@3A'
    @(248.92 mm, 86.36 mm): Label '5V@3A'
[multiple_net_names]: Both +VBAT and BATT_SHUNT- are attached to the same items; +VBAT will be used in the netlist
    ; warning
    @(129.54 mm, 82.55 mm): Symbol #PWR040 Pin 1 [Power input, Line]
    @(125.73 mm, 91.44 mm): Hierarchical Label 'BATT_SHUNT-'
[pin_to_pin]: Pins of type Output and Output are connected
    ; error
    @(99.06 mm, 154.94 mm): Symbol U4 Pin 1 [VOUT, Output, Line]
    @(99.06 mm, 157.48 mm): Symbol U4 Pin 2 [VOUT, Output, Line]
[pin_to_pin]: Pins of type Output and Output are connected
    ; error
    @(99.06 mm, 157.48 mm): Symbol U4 Pin 2 [VOUT, Output, Line]
    @(99.06 mm, 160.02 mm): Symbol U4 Pin 3 [VOUT, Output, Line]
[pin_to_pin]: Pins of type Output and Output are connected
    ; error
    @(99.06 mm, 160.02 mm): Symbol U4 Pin 3 [VOUT, Output, Line]
    @(99.06 mm, 162.56 mm): Symbol U4 Pin 4 [VOUT, Output, Line]
[pin_to_pin]: Pins of type Output and Output are connected
    ; error
    @(99.06 mm, 162.56 mm): Symbol U4 Pin 4 [VOUT, Output, Line]
    @(99.06 mm, 165.10 mm): Symbol U4 Pin 5 [VOUT, Output, Line]
[power_pin_not_driven]: Input Power pin not driven by any Output Power pins
    ; error
    @(185.42 mm, 44.45 mm): Symbol #PWR047 Pin 1 [Power input, Line]
[pin_to_pin]: Pins of type Unspecified and Passive are connected
    ; warning
    @(99.06 mm, 170.18 mm): Symbol U4 Pin 7 [SR, Unspecified, Line]
    @(113.03 mm, 172.72 mm): Symbol C24 Pin 1 [Passive, Line]
[pin_to_pin]: Pins of type Unspecified and Passive are connected
    ; warning
    @(99.06 mm, 173.99 mm): Symbol U4 Pin 9 [OCP, Unspecified, Line]
    @(99.06 mm, 173.99 mm): Symbol R19 Pin 1 [Passive, Line]
[multiple_net_names]: Both +3.3V and 3.3v@1A are attached to the same items; +3.3V will be used in the netlist
    ; warning
    @(193.04 mm, 85.09 mm): Symbol #PWR050 Pin 1 [Power input, Line]
    @(182.88 mm, 86.36 mm): Label '3.3v@1A'
[power_pin_not_driven]: Input Power pin not driven by any Output Power pins
    ; error
    @(207.01 mm, 22.86 mm): Symbol U6 Pin 3 [VIN1, Power input, Line]
[multiple_net_names]: Both +5V and 5v@2.5A are attached to the same items; +5V will be used in the netlist
    ; warning
    @(154.94 mm, 85.09 mm): Symbol #PWR042 Pin 1 [Power input, Line]
    @(241.30 mm, 22.86 mm): Label '5v@2.5A'
[power_pin_not_driven]: Input Power pin not driven by any Output Power pins
    ; error
    @(213.36 mm, 147.32 mm): Symbol #PWR052 Pin 1 [Power input, Line]
[multiple_net_names]: Both VBUS and 5V@3A are attached to the same items; VBUS will be used in the netlist
    ; warning
    @(260.35 mm, 83.82 mm): Symbol #PWR061 Pin 1 [Power input, Line]
    @(248.92 mm, 86.36 mm): Label '5V@3A'

***** Sheet /MOTOR_DRIVER1/
[pin_not_driven]: Input pin not driven by any Output pins
    ; error
    @(113.03 mm, 90.17 mm): Symbol U10 Pin 14 [EN, Input, Line]
[pin_not_driven]: Input pin not driven by any Output pins
    ; error
    @(113.03 mm, 92.71 mm): Symbol U10 Pin 15 [PH, Input, Line]

***** Sheet /MOTOR_DRIVER3/
[pin_not_driven]: Input pin not driven by any Output pins
    ; error
    @(113.03 mm, 90.17 mm): Symbol U10 Pin 14 [EN, Input, Line]
[pin_not_driven]: Input pin not driven by any Output pins
    ; error
    @(113.03 mm, 92.71 mm): Symbol U10 Pin 15 [PH, Input, Line]

***** Sheet /MOTOR_DRIVER4/
[pin_not_driven]: Input pin not driven by any Output pins
    ; error
    @(113.03 mm, 90.17 mm): Symbol U10 Pin 14 [EN, Input, Line]
[pin_not_driven]: Input pin not driven by any Output pins
    ; error
    @(113.03 mm, 92.71 mm): Symbol U10 Pin 15 [PH, Input, Line]

***** Sheet /BOARD_STAT_MESUREMENT/
[pin_not_driven]: Input pin not driven by any Output pins
    ; error
    @(68.58 mm, 87.63 mm): Symbol U11 Pin 5 [SCL, Input, Line]

***** Sheet /EXTERNAL_INTERFACING_DEVICES/
[hier_label_mismatch]: Hierarchical label OUT_BOUND_COMMS_EN has no matching sheet pin in the parent sheet
    ; error
    @(45.72 mm, 58.42 mm): Hierarchical Label 'OUT_BOUND_COMMS_EN'
[hier_label_mismatch]: Hierarchical label SDA has no matching sheet pin in the parent sheet
    ; error
    @(63.50 mm, 63.50 mm): Hierarchical Label 'SDA'
[hier_label_mismatch]: Hierarchical label SCL has no matching sheet pin in the parent sheet
    ; error
    @(63.50 mm, 68.58 mm): Hierarchical Label 'SCL'
[power_pin_not_driven]: Input Power pin not driven by any Output Power pins
    ; error
    @(88.90 mm, 53.34 mm): Symbol U15 Pin 7 [VCCB, Power input, Line]
[hier_label_mismatch]: Hierarchical label RXD has no matching sheet pin in the parent sheet
    ; error
    @(63.50 mm, 132.08 mm): Hierarchical Label 'RXD'
[power_pin_not_driven]: Input Power pin not driven by any Output Power pins
    ; error
    @(88.90 mm, 121.92 mm): Symbol U16 Pin 7 [VCCB, Power input, Line]
[hier_label_mismatch]: Hierarchical label TXD has no matching sheet pin in the parent sheet
    ; error
    @(63.50 mm, 137.16 mm): Hierarchical Label 'TXD'
[hier_label_mismatch]: Hierarchical label SERVO_EN has no matching sheet pin in the parent sheet
    ; error
    @(176.53 mm, 77.47 mm): Hierarchical Label 'SERVO_EN'
[hier_label_mismatch]: Hierarchical label SERVO_1 has no matching sheet pin in the parent sheet
    ; error
    @(176.53 mm, 82.55 mm): Hierarchical Label 'SERVO_1'
[hier_label_mismatch]: Hierarchical label SERVO_2 has no matching sheet pin in the parent sheet
    ; error
    @(176.53 mm, 87.63 mm): Hierarchical Label 'SERVO_2'
[hier_label_mismatch]: Hierarchical label SERVO_3 has no matching sheet pin in the parent sheet
    ; error
    @(176.53 mm, 92.71 mm): Hierarchical Label 'SERVO_3'
[hier_label_mismatch]: Hierarchical label SERVO_4 has no matching sheet pin in the parent sheet
    ; error
    @(176.53 mm, 97.79 mm): Hierarchical Label 'SERVO_4'
[pin_not_driven]: Input pin not driven by any Output pins
    ; error
    @(186.69 mm, 77.47 mm): Symbol U17 Pin 8 [OE, Input, Line]
[power_pin_not_driven]: Input Power pin not driven by any Output Power pins
    ; error
    @(200.66 mm, 72.39 mm): Symbol U17 Pin 14 [VCCB, Power input, Line]

 ** ERC messages: 134  Errors 107  Warnings 27
