isolated_rs485.kicad_sch

(kicad_sch (version 20211123) (generator eeschema)

  (uuid 4de8b7be-07f1-404c-8a88-482f6237258c)

  (paper "A4")

  (lib_symbols
    (symbol "Connector:Conn_01x02_Male" (pin_names (offset 1.016) hide) (in_bom yes) (on_board yes)
      (property "Reference" "J" (id 0) (at 0 2.54 0)
        (effects (font (size 1.27 1.27)))
      )
      (property "Value" "Conn_01x02_Male" (id 1) (at 0 -5.08 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)
        (effects (font (size 1.27 1.27)) hide)
      )
      (property "ki_keywords" "connector" (id 4) (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide)
      )
      (property "ki_description" "Generic connector, single row, 01x02, script generated (kicad-library-utils/schlib/autogen/connector/)" (id 5) (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide)
      )
      (property "ki_fp_filters" "Connector*:*_1x??_*" (id 6) (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide)
      )
      (symbol "Conn_01x02_Male_1_1"
        (polyline
          (pts
            (xy 1.27 -2.54)
            (xy 0.8636 -2.54)
          )
          (stroke (width 0.1524) (type default) (color 0 0 0 0))
          (fill (type none))
        )
        (polyline
          (pts
            (xy 1.27 0)
            (xy 0.8636 0)
          )
          (stroke (width 0.1524) (type default) (color 0 0 0 0))
          (fill (type none))
        )
        (rectangle (start 0.8636 -2.413) (end 0 -2.667)
          (stroke (width 0.1524) (type default) (color 0 0 0 0))
          (fill (type outline))
        )
        (rectangle (start 0.8636 0.127) (end 0 -0.127)
          (stroke (width 0.1524) (type default) (color 0 0 0 0))
          (fill (type outline))
        )
        (pin passive line (at 5.08 0 180) (length 3.81)
          (name "Pin_1" (effects (font (size 1.27 1.27))))
          (number "1" (effects (font (size 1.27 1.27))))
        )
        (pin passive line (at 5.08 -2.54 180) (length 3.81)
          (name "Pin_2" (effects (font (size 1.27 1.27))))
          (number "2" (effects (font (size 1.27 1.27))))
        )
      )
    )
    (symbol "Device:C" (pin_numbers hide) (pin_names (offset 0.254)) (in_bom yes) (on_board yes)
      (property "Reference" "C" (id 0) (at 0.635 2.54 0)
        (effects (font (size 1.27 1.27)) (justify left))
      )
      (property "Value" "C" (id 1) (at 0.635 -2.54 0)
        (effects (font (size 1.27 1.27)) (justify left))
      )
      (property "Footprint" "" (id 2) (at 0.9652 -3.81 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" "cap capacitor" (id 4) (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide)
      )
      (property "ki_description" "Unpolarized capacitor" (id 5) (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide)
      )
      (property "ki_fp_filters" "C_*" (id 6) (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide)
      )
      (symbol "C_0_1"
        (polyline
          (pts
            (xy -2.032 -0.762)
            (xy 2.032 -0.762)
          )
          (stroke (width 0.508) (type default) (color 0 0 0 0))
          (fill (type none))
        )
        (polyline
          (pts
            (xy -2.032 0.762)
            (xy 2.032 0.762)
          )
          (stroke (width 0.508) (type default) (color 0 0 0 0))
          (fill (type none))
        )
      )
      (symbol "C_1_1"
        (pin passive line (at 0 3.81 270) (length 2.794)
          (name "~" (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 2.794)
          (name "~" (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)))
      )
      (property "Value" "R" (id 1) (at 0 0 90)
        (effects (font (size 1.27 1.27)))
      )
      (property "Footprint" "" (id 2) (at -1.778 0 90)
        (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" "R res resistor" (id 4) (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide)
      )
      (property "ki_description" "Resistor" (id 5) (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide)
      )
      (property "ki_fp_filters" "R_*" (id 6) (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide)
      )
      (symbol "R_0_1"
        (rectangle (start -1.016 -2.54) (end 1.016 2.54)
          (stroke (width 0.254) (type default) (color 0 0 0 0))
          (fill (type none))
        )
      )
      (symbol "R_1_1"
        (pin passive line (at 0 3.81 270) (length 1.27)
          (name "~" (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 "~" (effects (font (size 1.27 1.27))))
          (number "2" (effects (font (size 1.27 1.27))))
        )
      )
    )
    (symbol "Diode:SM712_SOT23" (pin_names (offset 1.016) hide) (in_bom yes) (on_board yes)
      (property "Reference" "D" (id 0) (at 0 4.445 0)
        (effects (font (size 1.27 1.27)))
      )
      (property "Value" "SM712_SOT23" (id 1) (at 0 2.54 0)
        (effects (font (size 1.27 1.27)))
      )
      (property "Footprint" "Package_TO_SOT_SMD:SOT-23" (id 2) (at 0 -8.89 0)
        (effects (font (size 1.27 1.27)) hide)
      )
      (property "Datasheet" "https://www.littelfuse.com/~/media/electronics/datasheets/tvs_diode_arrays/littelfuse_tvs_diode_array_sm712_datasheet.pdf.pdf" (id 3) (at -3.81 0 0)
        (effects (font (size 1.27 1.27)) hide)
      )
      (property "ki_keywords" "transient voltage suppressor thyrector transil" (id 4) (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide)
      )
      (property "ki_description" "7V/12V, 600W Asymmetrical TVS Diode Array, SOT-23" (id 5) (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide)
      )
      (property "ki_fp_filters" "SOT?23*" (id 6) (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide)
      )
      (symbol "SM712_SOT23_0_0"
        (polyline
          (pts
            (xy 0 -1.27)
            (xy 0 0)
          )
          (stroke (width 0) (type default) (color 0 0 0 0))
          (fill (type none))
        )
      )
      (symbol "SM712_SOT23_0_1"
        (polyline
          (pts
            (xy -6.35 0)
            (xy 6.35 0)
          )
          (stroke (width 0) (type default) (color 0 0 0 0))
          (fill (type none))
        )
        (polyline
          (pts
            (xy -3.302 1.27)
            (xy -3.81 1.27)
            (xy -3.81 -1.27)
            (xy -4.318 -1.27)
          )
          (stroke (width 0.2032) (type default) (color 0 0 0 0))
          (fill (type none))
        )
        (polyline
          (pts
            (xy 4.318 1.27)
            (xy 3.81 1.27)
            (xy 3.81 -1.27)
            (xy 3.302 -1.27)
          )
          (stroke (width 0.2032) (type default) (color 0 0 0 0))
          (fill (type none))
        )
        (polyline
          (pts
            (xy -6.35 -1.27)
            (xy -1.27 1.27)
            (xy -1.27 -1.27)
            (xy -6.35 1.27)
            (xy -6.35 -1.27)
          )
          (stroke (width 0.2032) (type default) (color 0 0 0 0))
          (fill (type none))
        )
        (polyline
          (pts
            (xy 1.27 -1.27)
            (xy 1.27 1.27)
            (xy 6.35 -1.27)
            (xy 6.35 1.27)
            (xy 1.27 -1.27)
          )
          (stroke (width 0.2032) (type default) (color 0 0 0 0))
          (fill (type none))
        )
        (circle (center 0 0) (radius 0.254)
          (stroke (width 0) (type default) (color 0 0 0 0))
          (fill (type outline))
        )
      )
      (symbol "SM712_SOT23_1_1"
        (pin passive line (at -8.89 0 0) (length 2.54)
          (name "A1" (effects (font (size 1.27 1.27))))
          (number "1" (effects (font (size 1.27 1.27))))
        )
        (pin passive line (at 8.89 0 180) (length 2.54)
          (name "A2" (effects (font (size 1.27 1.27))))
          (number "2" (effects (font (size 1.27 1.27))))
        )
        (pin input line (at 0 -3.81 90) (length 2.54)
          (name "common" (effects (font (size 1.27 1.27))))
          (number "3" (effects (font (size 1.27 1.27))))
        )
      )
    )
    (symbol "Interface_UART:SN75176AD" (in_bom yes) (on_board yes)
      (property "Reference" "U" (id 0) (at -4.318 8.89 0)
        (effects (font (size 1.27 1.27)))
      )
      (property "Value" "SN75176AD" (id 1) (at 1.016 8.89 0)
        (effects (font (size 1.27 1.27)) (justify left))
      )
      (property "Footprint" "Package_SO:SOIC-8_3.9x4.9mm_P1.27mm" (id 2) (at 0 -12.7 0)
        (effects (font (size 1.27 1.27)) hide)
      )
      (property "Datasheet" "http://www.ti.com/lit/ds/symlink/sn75176a.pdf" (id 3) (at 40.64 -5.08 0)
        (effects (font (size 1.27 1.27)) hide)
      )
      (property "ki_keywords" "Differential bus transceiver" (id 4) (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide)
      )
      (property "ki_description" "Differential RS-422/RS-485 bus transceiver, SOIC-8" (id 5) (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide)
      )
      (property "ki_fp_filters" "SOIC*3.9x4.9mm*P1.27mm*" (id 6) (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide)
      )
      (symbol "SN75176AD_0_1"
        (rectangle (start -5.08 7.62) (end 5.08 -7.62)
          (stroke (width 0.254) (type default) (color 0 0 0 0))
          (fill (type background))
        )
      )
      (symbol "SN75176AD_1_1"
        (pin output line (at -7.62 -5.08 0) (length 2.54)
          (name "R" (effects (font (size 1.27 1.27))))
          (number "1" (effects (font (size 1.27 1.27))))
        )
        (pin input line (at -7.62 -2.54 0) (length 2.54)
          (name "~{RE}" (effects (font (size 1.27 1.27))))
          (number "2" (effects (font (size 1.27 1.27))))
        )
        (pin input line (at -7.62 5.08 0) (length 2.54)
          (name "DE" (effects (font (size 1.27 1.27))))
          (number "3" (effects (font (size 1.27 1.27))))
        )
        (pin input line (at -7.62 2.54 0) (length 2.54)
          (name "D" (effects (font (size 1.27 1.27))))
          (number "4" (effects (font (size 1.27 1.27))))
        )
        (pin power_in line (at 0 -10.16 90) (length 2.54)
          (name "GND" (effects (font (size 1.27 1.27))))
          (number "5" (effects (font (size 1.27 1.27))))
        )
        (pin bidirectional line (at 7.62 -5.08 180) (length 2.54)
          (name "A" (effects (font (size 1.27 1.27))))
          (number "6" (effects (font (size 1.27 1.27))))
        )
        (pin bidirectional line (at 7.62 -2.54 180) (length 2.54)
          (name "B" (effects (font (size 1.27 1.27))))
          (number "7" (effects (font (size 1.27 1.27))))
        )
        (pin power_in line (at 0 10.16 270) (length 2.54)
          (name "VCC" (effects (font (size 1.27 1.27))))
          (number "8" (effects (font (size 1.27 1.27))))
        )
      )
    )
  )

  (junction (at 193.04 99.06) (diameter 0) (color 0 0 0 0)
    (uuid 069b1ee7-fe3b-4eff-b4bf-7617946656d7)
  )
  (junction (at 148.59 63.5) (diameter 0) (color 0 0 0 0)
    (uuid 817e97d8-f2fe-4fff-9886-afc1c7ea9fc8)
  )
  (junction (at 167.64 91.44) (diameter 0) (color 0 0 0 0)
    (uuid 9539ec2b-88bb-46fb-84c7-637b272489a5)
  )
  (junction (at 138.43 88.9) (diameter 0) (color 0 0 0 0)
    (uuid 9da4f7ca-ad3e-41aa-94b8-e2711bd4d9fd)
  )
  (junction (at 193.04 86.36) (diameter 0) (color 0 0 0 0)
    (uuid bee92cf1-5661-4dee-b17a-4d41fc8ee98c)
  )
  (junction (at 99.06 88.9) (diameter 0) (color 0 0 0 0)
    (uuid c74cef8c-0964-4de5-94b4-8838c439db18)
  )
  (junction (at 185.42 99.06) (diameter 0) (color 0 0 0 0)
    (uuid eca43b47-3176-4d01-b345-dbf1aa7802a7)
  )

  (wire (pts (xy 165.1 73.66) (xy 165.1 76.2))
    (stroke (width 0) (type default) (color 0 0 0 0))
    (uuid 04204999-bc5b-4650-b26e-94d59222bb43)
  )
  (wire (pts (xy 138.43 96.52) (xy 138.43 88.9))
    (stroke (width 0) (type default) (color 0 0 0 0))
    (uuid 0d42a226-f46d-4930-b311-3e5e439592c4)
  )
  (wire (pts (xy 193.04 86.36) (xy 193.04 88.9))
    (stroke (width 0) (type default) (color 0 0 0 0))
    (uuid 14874e61-d3b4-4a8c-bf45-68b52add7787)
  )
  (wire (pts (xy 179.07 91.44) (xy 179.07 86.36))
    (stroke (width 0) (type default) (color 0 0 0 0))
    (uuid 1771fbd6-3784-45db-9238-4f95c619ebc4)
  )
  (wire (pts (xy 165.1 63.5) (xy 165.1 66.04))
    (stroke (width 0) (type default) (color 0 0 0 0))
    (uuid 1a3a291d-157d-4163-8efe-519c477f39df)
  )
  (wire (pts (xy 156.21 99.06) (xy 185.42 99.06))
    (stroke (width 0) (type default) (color 0 0 0 0))
    (uuid 25fbb172-8ec9-4c95-8bc3-97f4ffc44970)
  )
  (wire (pts (xy 185.42 99.06) (xy 185.42 111.76))
    (stroke (width 0) (type default) (color 0 0 0 0))
    (uuid 33a491aa-9b88-488c-8463-7fecffd622a5)
  )
  (wire (pts (xy 58.42 88.9) (xy 99.06 88.9))
    (stroke (width 0) (type default) (color 0 0 0 0))
    (uuid 4a9e1ac1-f417-493e-aef8-20f79c5301fa)
  )
  (wire (pts (xy 148.59 63.5) (xy 165.1 63.5))
    (stroke (width 0) (type default) (color 0 0 0 0))
    (uuid 4f97c42c-e930-4fa4-bc52-19a50f2d73f6)
  )
  (wire (pts (xy 156.21 96.52) (xy 160.02 96.52))
    (stroke (width 0) (type default) (color 0 0 0 0))
    (uuid 59ea5e18-939d-4acc-b057-49e0f86e5535)
  )
  (wire (pts (xy 148.59 104.14) (xy 148.59 106.68))
    (stroke (width 0) (type default) (color 0 0 0 0))
    (uuid 5ff108d0-0d26-4c08-bf8d-192dcd90240b)
  )
  (wire (pts (xy 193.04 73.66) (xy 193.04 76.2))
    (stroke (width 0) (type default) (color 0 0 0 0))
    (uuid 6d3a44a3-6049-41b7-a2e5-0614300d7624)
  )
  (wire (pts (xy 193.04 110.49) (xy 193.04 113.03))
    (stroke (width 0) (type default) (color 0 0 0 0))
    (uuid 7532ab77-6f6c-4dc6-be15-c925966e35ce)
  )
  (wire (pts (xy 193.04 99.06) (xy 193.04 102.87))
    (stroke (width 0) (type default) (color 0 0 0 0))
    (uuid 7e6bbf6a-f998-477c-ba33-9ea6d8a3615f)
  )
  (wire (pts (xy 167.64 91.44) (xy 167.64 111.76))
    (stroke (width 0) (type default) (color 0 0 0 0))
    (uuid 80562fad-ee4c-4d40-bc47-7b184fabdd46)
  )
  (wire (pts (xy 160.02 96.52) (xy 160.02 91.44))
    (stroke (width 0) (type default) (color 0 0 0 0))
    (uuid 8313a131-c836-4641-a633-061b298fd756)
  )
  (wire (pts (xy 148.59 63.5) (xy 148.59 83.82))
    (stroke (width 0) (type default) (color 0 0 0 0))
    (uuid 8554d2c1-cab5-4c07-87d7-69bbd3c202e1)
  )
  (wire (pts (xy 99.06 88.9) (xy 99.06 104.14))
    (stroke (width 0) (type default) (color 0 0 0 0))
    (uuid 856e1198-c6eb-48d5-8df6-da372afb8c9a)
  )
  (wire (pts (xy 58.42 99.06) (xy 140.97 99.06))
    (stroke (width 0) (type default) (color 0 0 0 0))
    (uuid 86acfa98-647c-45d4-80af-a08caf6c3b9d)
  )
  (wire (pts (xy 167.64 91.44) (xy 179.07 91.44))
    (stroke (width 0) (type default) (color 0 0 0 0))
    (uuid 8f97aa68-efca-47eb-91ba-a2a2213e4d00)
  )
  (wire (pts (xy 99.06 111.76) (xy 99.06 115.57))
    (stroke (width 0) (type default) (color 0 0 0 0))
    (uuid 91800d5a-cc5c-49b8-8bc1-cfa8f3dee735)
  )
  (wire (pts (xy 185.42 99.06) (xy 193.04 99.06))
    (stroke (width 0) (type default) (color 0 0 0 0))
    (uuid a272ead0-dd39-4cbe-804e-10f6acc13a86)
  )
  (wire (pts (xy 179.07 86.36) (xy 193.04 86.36))
    (stroke (width 0) (type default) (color 0 0 0 0))
    (uuid a30eb5b1-5249-4ae8-bf0c-7a9aae77cf05)
  )
  (wire (pts (xy 58.42 91.44) (xy 140.97 91.44))
    (stroke (width 0) (type default) (color 0 0 0 0))
    (uuid a4b12488-3c76-46b6-b0d1-fda5de7551e6)
  )
  (wire (pts (xy 193.04 99.06) (xy 205.74 99.06))
    (stroke (width 0) (type default) (color 0 0 0 0))
    (uuid a65a2664-7c78-4868-aca8-b0d9f898cbd2)
  )
  (wire (pts (xy 140.97 96.52) (xy 138.43 96.52))
    (stroke (width 0) (type default) (color 0 0 0 0))
    (uuid ab3df66a-9332-45a5-80d5-64eb92ebcd70)
  )
  (wire (pts (xy 193.04 83.82) (xy 193.04 86.36))
    (stroke (width 0) (type default) (color 0 0 0 0))
    (uuid ae19f65f-077c-4969-b45f-c66467568d77)
  )
  (wire (pts (xy 138.43 88.9) (xy 140.97 88.9))
    (stroke (width 0) (type default) (color 0 0 0 0))
    (uuid b25457b4-7d78-4db7-baca-488a62e6f3e7)
  )
  (wire (pts (xy 160.02 91.44) (xy 167.64 91.44))
    (stroke (width 0) (type default) (color 0 0 0 0))
    (uuid b7d5adc3-e4df-482b-aa71-6fb8fd987eb8)
  )
  (wire (pts (xy 99.06 88.9) (xy 138.43 88.9))
    (stroke (width 0) (type default) (color 0 0 0 0))
    (uuid cdf9c47b-a765-47c6-98b0-7c23440c99bf)
  )
  (wire (pts (xy 148.59 60.96) (xy 148.59 63.5))
    (stroke (width 0) (type default) (color 0 0 0 0))
    (uuid dc76d063-8746-40e6-9ae6-a40d44231dca)
  )
  (wire (pts (xy 176.53 115.57) (xy 176.53 118.11))
    (stroke (width 0) (type default) (color 0 0 0 0))
    (uuid e22916f6-ce35-496d-b7b1-1208e8e8071e)
  )
  (wire (pts (xy 193.04 86.36) (xy 205.74 86.36))
    (stroke (width 0) (type default) (color 0 0 0 0))
    (uuid eb3a1e76-8756-449a-aa22-4add954f8cae)
  )

  (text "Install jumper to connect termination resistor only \nif the board is at one extremity of the rs485 daisychain"
    (at 203.2 93.98 0)
    (effects (font (size 1.27 1.27)) (justify left bottom))
    (uuid 34b90f25-4cf7-4f0f-a56c-f8a9836667dc)
  )
  (text "RS485 for Stepper Driver Configuration" (at 107.95 36.83 0)
    (effects (font (size 2.54 2.54) bold) (justify left bottom))
    (uuid cd329199-21c3-4d26-a9ca-523b09ad3fdb)
  )
  (text "Biasing resistors are installed\non the main board (ex: GRBLHAL2000). \nOnly 1 is needed per rs485 daisychain."
    (at 187.96 129.54 0)
    (effects (font (size 1.27 1.27)) (justify left bottom))
    (uuid fcdac0dd-963e-4a4d-8d5a-abaef2b12e0c)
  )

  (hierarchical_label "Driver Enable" (shape input) (at 58.42 88.9 180)
    (effects (font (size 1.27 1.27)) (justify right))
    (uuid 050d5c10-400a-4e5b-81d7-53a9e6a8bd01)
  )
  (hierarchical_label "3V3" (shape input) (at 193.04 113.03 270)
    (effects (font (size 1.27 1.27)) (justify right))
    (uuid 150f69cb-1340-4cf4-96c4-f88b7b8d01ac)
  )
  (hierarchical_label "RS485_A" (shape output) (at 205.74 99.06 0)
    (effects (font (size 1.27 1.27)) (justify left))
    (uuid 1d89b39f-4a7b-4f6e-a373-37525f029b35)
  )
  (hierarchical_label "GND" (shape input) (at 148.59 106.68 270)
    (effects (font (size 1.27 1.27)) (justify right))
    (uuid 235b3790-b750-4a41-ab21-e91d97d68c5c)
  )
  (hierarchical_label "RS485_TxD" (shape input) (at 58.42 91.44 180)
    (effects (font (size 1.27 1.27)) (justify right))
    (uuid 3522e3e8-b9f1-44b7-a1dd-6fca9e1eeb7d)
  )
  (hierarchical_label "GND" (shape input) (at 165.1 76.2 270)
    (effects (font (size 1.27 1.27)) (justify right))
    (uuid 5ff46ab4-7ee8-469a-b840-783c7ec64b9f)
  )
  (hierarchical_label "3V3" (shape input) (at 148.59 60.96 90)
    (effects (font (size 1.27 1.27)) (justify left))
    (uuid 6273c126-f976-42d1-bcbd-4797125cdd95)
  )
  (hierarchical_label "GND" (shape input) (at 99.06 115.57 270)
    (effects (font (size 1.27 1.27)) (justify right))
    (uuid 846a7b5c-81c3-45c8-a7dd-1d06127d93a3)
  )
  (hierarchical_label "GND" (shape input) (at 176.53 118.11 270)
    (effects (font (size 1.27 1.27)) (justify right))
    (uuid c3c8d6e0-c5ca-49d8-a555-26f8d254e773)
  )
  (hierarchical_label "GND" (shape input) (at 193.04 73.66 90)
    (effects (font (size 1.27 1.27)) (justify left))
    (uuid c961974b-b48f-47c8-9fc1-9a48f21fe423)
  )
  (hierarchical_label "RS485_RxD" (shape output) (at 58.42 99.06 180)
    (effects (font (size 1.27 1.27)) (justify right))
    (uuid cc6573b7-a351-4933-b5e7-b4c1e2ef141c)
  )
  (hierarchical_label "RS485_B" (shape output) (at 205.74 86.36 0)
    (effects (font (size 1.27 1.27)) (justify left))
    (uuid f7c5dd88-6793-4cbf-af5b-7fa44084fe06)
  )

  (symbol (lib_id "Device:C") (at 165.1 69.85 0) (unit 1)
    (in_bom yes) (on_board yes)
    (uuid 501f727d-7200-4156-955d-d3f497bbd9fe)
    (property "Reference" "C59" (id 0) (at 161.29 66.6749 0)
      (effects (font (size 1.27 1.27)) (justify left))
    )
    (property "Value" "100n 50V" (id 1) (at 154.94 73.0249 0)
      (effects (font (size 1.27 1.27)) (justify left))
    )
    (property "Footprint" "Capacitor_SMD:C_0402_1005Metric" (id 2) (at 166.0652 73.66 0)
      (effects (font (size 1.27 1.27)) hide)
    )
    (property "Datasheet" "~" (id 3) (at 165.1 69.85 0)
      (effects (font (size 1.27 1.27)) hide)
    )
    (property "LCSC" "C307331" (id 4) (at 165.1 69.85 0)
      (effects (font (size 1.27 1.27)) hide)
    )
    (pin "1" (uuid ea82b207-d6c5-484e-93d3-89a3d89ed315))
    (pin "2" (uuid f2b7d031-748f-4da0-9a8c-fca7533e562d))
  )

  (symbol (lib_id "Connector:Conn_01x02_Male") (at 198.12 91.44 180) (unit 1)
    (in_bom yes) (on_board yes) (fields_autoplaced)
    (uuid 5442bb09-df9a-43bc-a2f3-77df1359fa92)
    (property "Reference" "J14" (id 0) (at 199.39 90.1699 0)
      (effects (font (size 1.27 1.27)) (justify right))
    )
    (property "Value" "Conn_01x02_Male" (id 1) (at 199.39 91.4399 0)
      (effects (font (size 1.27 1.27)) (justify right) hide)
    )
    (property "Footprint" "Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical" (id 2) (at 198.12 91.44 0)
      (effects (font (size 1.27 1.27)) hide)
    )
    (property "Datasheet" "~" (id 3) (at 198.12 91.44 0)
      (effects (font (size 1.27 1.27)) hide)
    )
    (property "LCSC" "C492401" (id 4) (at 198.12 91.44 0)
      (effects (font (size 1.27 1.27)) hide)
    )
    (pin "1" (uuid 7033e550-ac05-4205-a45d-3969e8489c0f))
    (pin "2" (uuid 2f7faf57-7c9c-47b3-bf0d-60c8f85c2ba8))
  )

  (symbol (lib_id "Diode:SM712_SOT23") (at 176.53 111.76 0) (unit 1)
    (in_bom yes) (on_board yes) (fields_autoplaced)
    (uuid 55fb479a-4cd3-48b6-8d70-8d71a5cade7e)
    (property "Reference" "D5" (id 0) (at 176.53 105.41 0))
    (property "Value" "SM712_SOT23" (id 1) (at 176.53 107.95 0))
    (property "Footprint" "Package_TO_SOT_SMD:SOT-23" (id 2) (at 176.53 120.65 0)
      (effects (font (size 1.27 1.27)) hide)
    )
    (property "Datasheet" "https://www.littelfuse.com/~/media/electronics/datasheets/tvs_diode_arrays/littelfuse_tvs_diode_array_sm712_datasheet.pdf.pdf" (id 3) (at 172.72 111.76 0)
      (effects (font (size 1.27 1.27)) hide)
    )
    (property "LCSC" "C32677" (id 4) (at 176.53 111.76 0)
      (effects (font (size 1.27 1.27)) hide)
    )
    (pin "1" (uuid 57a07be4-2c64-49a3-b417-18df388000b1))
    (pin "2" (uuid bd2afad5-5b07-4493-827d-d49d58e2dc22))
    (pin "3" (uuid 3aa871ed-5cf7-43e3-aa73-9f905d213d22))
  )

  (symbol (lib_id "Device:R") (at 193.04 80.01 180) (unit 1)
    (in_bom yes) (on_board yes) (fields_autoplaced)
    (uuid 759646bf-5c31-420e-aff7-2c1a28ce32e1)
    (property "Reference" "R58" (id 0) (at 195.58 78.7399 0)
      (effects (font (size 1.27 1.27)) (justify right))
    )
    (property "Value" "DNI" (id 1) (at 195.58 81.2799 0)
      (effects (font (size 1.27 1.27)) (justify right))
    )
    (property "Footprint" "Resistor_SMD:R_0402_1005Metric" (id 2) (at 194.818 80.01 90)
      (effects (font (size 1.27 1.27)) hide)
    )
    (property "Datasheet" "~" (id 3) (at 193.04 80.01 0)
      (effects (font (size 1.27 1.27)) hide)
    )
    (property "LCSC" "" (id 4) (at 193.04 80.01 0)
      (effects (font (size 1.27 1.27)) hide)
    )
    (pin "1" (uuid ebc75791-01c4-44ed-b4ff-eec0da3b689e))
    (pin "2" (uuid 126c491c-9bb3-434e-b11e-9947960b9ba3))
  )

  (symbol (lib_id "Device:R") (at 193.04 106.68 180) (unit 1)
    (in_bom yes) (on_board yes) (fields_autoplaced)
    (uuid 82732a40-8687-4fc9-96a7-a674b77a6965)
    (property "Reference" "R60" (id 0) (at 195.58 105.4099 0)
      (effects (font (size 1.27 1.27)) (justify right))
    )
    (property "Value" "DNI" (id 1) (at 195.58 107.9499 0)
      (effects (font (size 1.27 1.27)) (justify right))
    )
    (property "Footprint" "Resistor_SMD:R_0402_1005Metric" (id 2) (at 194.818 106.68 90)
      (effects (font (size 1.27 1.27)) hide)
    )
    (property "Datasheet" "~" (id 3) (at 193.04 106.68 0)
      (effects (font (size 1.27 1.27)) hide)
    )
    (property "LCSC" "" (id 4) (at 193.04 106.68 0)
      (effects (font (size 1.27 1.27)) hide)
    )
    (pin "1" (uuid 1a60ea8a-4cc4-487b-8879-b646fa71abc1))
    (pin "2" (uuid 0420b17a-c693-409c-a7bb-4f31c7f8ddfb))
  )

  (symbol (lib_id "Device:R") (at 99.06 107.95 180) (unit 1)
    (in_bom yes) (on_board yes) (fields_autoplaced)
    (uuid 8c3ee91e-6a76-4204-9980-d87a6becf900)
    (property "Reference" "R57" (id 0) (at 101.6 106.6799 0)
      (effects (font (size 1.27 1.27)) (justify right))
    )
    (property "Value" "10k" (id 1) (at 101.6 109.2199 0)
      (effects (font (size 1.27 1.27)) (justify right))
    )
    (property "Footprint" "Resistor_SMD:R_0402_1005Metric" (id 2) (at 100.838 107.95 90)
      (effects (font (size 1.27 1.27)) hide)
    )
    (property "Datasheet" "~" (id 3) (at 99.06 107.95 0)
      (effects (font (size 1.27 1.27)) hide)
    )
    (property "LCSC" "C25744" (id 4) (at 99.06 107.95 0)
      (effects (font (size 1.27 1.27)) hide)
    )
    (pin "1" (uuid 08191024-c7c7-4698-af0a-ba6b13b63bd3))
    (pin "2" (uuid a9945bf5-401e-4eb9-afd5-404629892df1))
  )

  (symbol (lib_id "Device:R") (at 193.04 95.25 180) (unit 1)
    (in_bom yes) (on_board yes) (fields_autoplaced)
    (uuid b376b956-bb21-4422-a05c-ff984624f721)
    (property "Reference" "R59" (id 0) (at 195.58 93.9799 0)
      (effects (font (size 1.27 1.27)) (justify right))
    )
    (property "Value" "120 (DNI)" (id 1) (at 195.58 96.5199 0)
      (effects (font (size 1.27 1.27)) (justify right))
    )
    (property "Footprint" "Resistor_SMD:R_1206_3216Metric" (id 2) (at 194.818 95.25 90)
      (effects (font (size 1.27 1.27)) hide)
    )
    (property "Datasheet" "~" (id 3) (at 193.04 95.25 0)
      (effects (font (size 1.27 1.27)) hide)
    )
    (property "LCSC" "" (id 4) (at 193.04 95.25 0)
      (effects (font (size 1.27 1.27)) hide)
    )
    (pin "1" (uuid 2b08ff88-129a-4c97-9687-1d8a517dd5b7))
    (pin "2" (uuid 09ae1791-8932-473e-963b-61c6ebed9dc6))
  )

  (symbol (lib_id "Interface_UART:SN75176AD") (at 148.59 93.98 0) (unit 1)
    (in_bom yes) (on_board yes)
    (uuid edad604b-df52-46e7-ab6e-e530366d23ae)
    (property "Reference" "U26" (id 0) (at 142.24 85.09 0)
      (effects (font (size 1.27 1.27)) (justify left))
    )
    (property "Value" "SP3485EN-L/TR" (id 1) (at 149.86 85.09 0)
      (effects (font (size 1.27 1.27)) (justify left))
    )
    (property "Footprint" "Package_SO:SOIC-8_3.9x4.9mm_P1.27mm" (id 2) (at 148.59 106.68 0)
      (effects (font (size 1.27 1.27)) hide)
    )
    (property "Datasheet" "" (id 3) (at 189.23 99.06 0)
      (effects (font (size 1.27 1.27)) hide)
    )
    (property "LCSC" "C8963" (id 4) (at 148.59 93.98 0)
      (effects (font (size 1.27 1.27)) hide)
    )
    (pin "1" (uuid 5652246c-55bd-49e7-8846-b13c512e72f9))
    (pin "2" (uuid 8096c6ca-0808-4d49-8b09-2a74d7fbfd7a))
    (pin "3" (uuid c2cbb32e-a310-4ba4-a93a-63733eab8225))
    (pin "4" (uuid db018f5b-f2a1-4918-a97c-8ffb4dfe2418))
    (pin "5" (uuid a09bada2-beac-448c-a551-1fc6428ff4eb))
    (pin "6" (uuid db28924d-6fef-4063-9665-2534e1bf7b99))
    (pin "7" (uuid 3aaa6ac3-0a64-42e1-af38-cf46db41461e))
    (pin "8" (uuid f9fdb9c9-ab00-48d6-a42c-bed4f00fc2ef))
  )
)