(kicad_pcb (version 20221018) (generator pcbnew)

  (general
    (thickness 1.6)
  )

  (paper "A4")
  (layers
    (0 "F.Cu" signal)
    (31 "B.Cu" signal)
    (32 "B.Adhes" user "B.Adhesive")
    (33 "F.Adhes" user "F.Adhesive")
    (34 "B.Paste" user)
    (35 "F.Paste" user)
    (36 "B.SilkS" user "B.Silkscreen")
    (37 "F.SilkS" user "F.Silkscreen")
    (38 "B.Mask" user)
    (39 "F.Mask" user)
    (40 "Dwgs.User" user "User.Drawings")
    (41 "Cmts.User" user "User.Comments")
    (42 "Eco1.User" user "User.Eco1")
    (43 "Eco2.User" user "User.Eco2")
    (44 "Edge.Cuts" user)
    (45 "Margin" user)
    (46 "B.CrtYd" user "B.Courtyard")
    (47 "F.CrtYd" user "F.Courtyard")
    (48 "B.Fab" user)
    (49 "F.Fab" user)
    (50 "User.1" user)
    (51 "User.2" user)
    (52 "User.3" user)
    (53 "User.4" user)
    (54 "User.5" user)
    (55 "User.6" user)
    (56 "User.7" user)
    (57 "User.8" user)
    (58 "User.9" user)
  )

  (setup
    (stackup
      (layer "F.SilkS" (type "Top Silk Screen"))
      (layer "F.Paste" (type "Top Solder Paste"))
      (layer "F.Mask" (type "Top Solder Mask") (thickness 0.01))
      (layer "F.Cu" (type "copper") (thickness 0.035))
      (layer "dielectric 1" (type "core") (thickness 1.51) (material "FR4") (epsilon_r 4.5) (loss_tangent 0.02))
      (layer "B.Cu" (type "copper") (thickness 0.035))
      (layer "B.Mask" (type "Bottom Solder Mask") (color "Green") (thickness 0.01))
      (layer "B.Paste" (type "Bottom Solder Paste"))
      (layer "B.SilkS" (type "Bottom Silk Screen"))
      (copper_finish "None")
      (dielectric_constraints no)
    )
    (pad_to_mask_clearance 0)
    (pcbplotparams
      (layerselection 0x00010fc_ffffffff)
      (plot_on_all_layers_selection 0x0000000_00000000)
      (disableapertmacros false)
      (usegerberextensions false)
      (usegerberattributes true)
      (usegerberadvancedattributes true)
      (creategerberjobfile true)
      (dashed_line_dash_ratio 12.000000)
      (dashed_line_gap_ratio 3.000000)
      (svgprecision 4)
      (plotframeref false)
      (viasonmask false)
      (mode 1)
      (useauxorigin false)
      (hpglpennumber 1)
      (hpglpenspeed 20)
      (hpglpendiameter 15.000000)
      (dxfpolygonmode true)
      (dxfimperialunits true)
      (dxfusepcbnewfont true)
      (psnegative false)
      (psa4output false)
      (plotreference true)
      (plotvalue false)
      (plotinvisibletext false)
      (sketchpadsonfab false)
      (subtractmaskfromsilk false)
      (outputformat 1)
      (mirror false)
      (drillshape 0)
      (scaleselection 1)
      (outputdirectory "../../longchessboardpcb/")
    )
  )

  (net 0 "")
  (net 1 "unconnected-(A1-D1{slash}TX-Pad1)")
  (net 2 "unconnected-(A1-D0{slash}RX-Pad2)")
  (net 3 "unconnected-(A1-~{RESET}-Pad3)")
  (net 4 "unconnected-(A1-GND-Pad4)")
  (net 5 "/D2")
  (net 6 "/D3")
  (net 7 "/D4")
  (net 8 "/D5")
  (net 9 "/D6")
  (net 10 "/D7")
  (net 11 "/D8")
  (net 12 "/D9")
  (net 13 "/D10")
  (net 14 "/D11")
  (net 15 "/D12")
  (net 16 "/D13")
  (net 17 "unconnected-(A1-3V3-Pad17)")
  (net 18 "unconnected-(A1-AREF-Pad18)")
  (net 19 "/A0")
  (net 20 "/A1")
  (net 21 "/A2")
  (net 22 "/A3")
  (net 23 "/SDA")
  (net 24 "/SCL")
  (net 25 "unconnected-(A1-A6-Pad25)")
  (net 26 "unconnected-(A1-A7-Pad26)")
  (net 27 "/5v")
  (net 28 "unconnected-(A1-~{RESET}-Pad28)")
  (net 29 "GND")
  (net 30 "+12V")
  (net 31 "unconnected-(A2-1B-Pad3)")
  (net 32 "unconnected-(A2-1A-Pad4)")
  (net 33 "unconnected-(A2-2A-Pad5)")
  (net 34 "unconnected-(A2-2B-Pad6)")
  (net 35 "+24V")
  (net 36 "unconnected-(A2-~{ENABLE}-Pad9)")
  (net 37 "unconnected-(A2-MS1-Pad10)")
  (net 38 "unconnected-(A2-MS2-Pad11)")
  (net 39 "unconnected-(A2-MS3-Pad12)")
  (net 40 "Net-(A2-~{RESET})")
  (net 41 "unconnected-(A3-1B-Pad3)")
  (net 42 "unconnected-(A3-1A-Pad4)")
  (net 43 "unconnected-(A3-2A-Pad5)")
  (net 44 "unconnected-(A3-2B-Pad6)")
  (net 45 "unconnected-(A3-~{ENABLE}-Pad9)")
  (net 46 "unconnected-(A3-MS1-Pad10)")
  (net 47 "unconnected-(A3-MS2-Pad11)")
  (net 48 "unconnected-(A3-MS3-Pad12)")
  (net 49 "Net-(A3-~{RESET})")
  (net 50 "Net-(Q1-C)")
  (net 51 "Net-(Q1-B)")
  (net 52 "unconnected-(U1-I7-Pad2)")
  (net 53 "unconnected-(U1-I6-Pad3)")
  (net 54 "unconnected-(U1-I5-Pad4)")
  (net 55 "unconnected-(U1-I4-Pad5)")
  (net 56 "unconnected-(U1-I3-Pad6)")
  (net 57 "unconnected-(U1-I2-Pad7)")
  (net 58 "unconnected-(U1-I1-Pad8)")
  (net 59 "unconnected-(U1-I0-Pad9)")
  (net 60 "unconnected-(U1-I15-Pad16)")
  (net 61 "unconnected-(U1-I14-Pad17)")
  (net 62 "unconnected-(U1-I13-Pad18)")
  (net 63 "unconnected-(U1-I12-Pad19)")
  (net 64 "unconnected-(U1-I11-Pad20)")
  (net 65 "unconnected-(U1-I10-Pad21)")
  (net 66 "unconnected-(U1-I9-Pad22)")
  (net 67 "unconnected-(U1-I8-Pad23)")
  (net 68 "unconnected-(U2-I7-Pad2)")
  (net 69 "unconnected-(U2-I6-Pad3)")
  (net 70 "unconnected-(U2-I5-Pad4)")
  (net 71 "unconnected-(U2-I4-Pad5)")
  (net 72 "unconnected-(U2-I3-Pad6)")
  (net 73 "unconnected-(U2-I2-Pad7)")
  (net 74 "unconnected-(U2-I1-Pad8)")
  (net 75 "unconnected-(U2-I0-Pad9)")
  (net 76 "unconnected-(U2-I15-Pad16)")
  (net 77 "unconnected-(U2-I14-Pad17)")
  (net 78 "unconnected-(U2-I13-Pad18)")
  (net 79 "unconnected-(U2-I12-Pad19)")
  (net 80 "unconnected-(U2-I11-Pad20)")
  (net 81 "unconnected-(U2-I10-Pad21)")
  (net 82 "unconnected-(U2-I9-Pad22)")
  (net 83 "unconnected-(U2-I8-Pad23)")
  (net 84 "unconnected-(U3-I7-Pad2)")
  (net 85 "unconnected-(U3-I6-Pad3)")
  (net 86 "unconnected-(U3-I5-Pad4)")
  (net 87 "unconnected-(U3-I4-Pad5)")
  (net 88 "unconnected-(U3-I3-Pad6)")
  (net 89 "unconnected-(U3-I2-Pad7)")
  (net 90 "unconnected-(U3-I1-Pad8)")
  (net 91 "unconnected-(U3-I0-Pad9)")
  (net 92 "unconnected-(U3-I15-Pad16)")
  (net 93 "unconnected-(U3-I14-Pad17)")
  (net 94 "unconnected-(U3-I13-Pad18)")
  (net 95 "unconnected-(U3-I12-Pad19)")
  (net 96 "unconnected-(U3-I11-Pad20)")
  (net 97 "unconnected-(U3-I10-Pad21)")
  (net 98 "unconnected-(U3-I9-Pad22)")
  (net 99 "unconnected-(U3-I8-Pad23)")
  (net 100 "unconnected-(U4-I7-Pad2)")
  (net 101 "unconnected-(U4-I6-Pad3)")
  (net 102 "unconnected-(U4-I5-Pad4)")
  (net 103 "unconnected-(U4-I4-Pad5)")
  (net 104 "unconnected-(U4-I3-Pad6)")
  (net 105 "unconnected-(U4-I2-Pad7)")
  (net 106 "unconnected-(U4-I1-Pad8)")
  (net 107 "unconnected-(U4-I0-Pad9)")
  (net 108 "unconnected-(U4-I15-Pad16)")
  (net 109 "unconnected-(U4-I14-Pad17)")
  (net 110 "unconnected-(U4-I13-Pad18)")
  (net 111 "unconnected-(U4-I12-Pad19)")
  (net 112 "unconnected-(U4-I11-Pad20)")
  (net 113 "unconnected-(U4-I10-Pad21)")
  (net 114 "unconnected-(U4-I9-Pad22)")
  (net 115 "unconnected-(U4-I8-Pad23)")

  (footprint "magnet_pins:electromagnet_pins" (layer "F.Cu")
    (tstamp 004a306c-3ebc-486b-8d3e-667d075c22de)
    (at 215.54 61.18 180)
    (property "Sheetfile" "automatic_chessboard.kicad_sch")
    (property "Sheetname" "")
    (property "ki_description" "Inductor")
    (property "ki_keywords" "inductor choke coil reactor magnetic")
    (path "/4561655d-b111-4850-8d58-53a56e658f7f")
    (attr smd)
    (fp_text reference "L1" (at 0 -0.5 180 unlocked) (layer "F.SilkS") hide
        (effects (font (size 1 1) (thickness 0.1)))
      (tstamp 14f72c26-d936-45a6-9b63-9d2ffaab5491)
    )
    (fp_text value "L" (at 0 4 180 unlocked) (layer "F.Fab")
        (effects (font (size 1 1) (thickness 0.15)))
      (tstamp 7a8d9bdf-ac8f-4e3f-8c1e-52c5dc5cd371)
    )
    (fp_text user "${REFERENCE}" (at 0 2.5 180 unlocked) (layer "F.Fab") hide
        (effects (font (size 1 1) (thickness 0.15)))
      (tstamp c6c4ff1b-a7c3-4b12-8589-74ba3a65f27f)
    )
    (pad "1" thru_hole circle (at -2.54 5.08 180) (size 1.6 1.6) (drill 1) (layers "*.Cu" "*.Mask")
      (net 35 "+24V") (pinfunction "1") (pintype "passive") (tstamp d4a4ea5d-e416-4ade-9c13-30e7296381b9))
    (pad "2" thru_hole circle (at 2.54 5.08 180) (size 1.6 1.6) (drill 1) (layers "*.Cu" "*.Mask")
      (net 50 "Net-(Q1-C)") (pinfunction "2") (pintype "passive") (tstamp ccb3dc3c-7421-4921-a8b9-789cf6c823b4))
  )

  (footprint "multiplexer:multiplexer" (layer "F.Cu")
    (tstamp 01bfa3dd-5010-46d7-8f2d-f0a593245f50)
    (at 89.58 27.22 -90)
    (property "Sheetfile" "automatic_chessboard.kicad_sch")
    (property "Sheetname" "")
    (property "ki_description" "High-Speed CMOS Logic 16-Channel Analog Multiplexer/Demultiplexer, SOIC-24")
    (property "ki_keywords" "multiplexer demultiplexer mux demux")
    (path "/bf10fc81-fefa-409f-893c-f32997e10652")
    (attr smd)
    (fp_text reference "U4" (at -0.82 36.56 unlocked) (layer "F.SilkS") hide
        (effects (font (size 1 1) (thickness 0.1)))
      (tstamp 7e76151e-0bf6-4153-ad9c-1abd8140e5d9)
    )
    (fp_text value "CD74HC4067M" (at 0.68 36.56 unlocked) (layer "F.Fab")
        (effects (font (size 1 1) (thickness 0.15)))
      (tstamp 3d3422fa-f3e5-4beb-8cd3-420900fbc3a1)
    )
    (fp_text user "${REFERENCE}" (at 2.18 36.56 unlocked) (layer "F.Fab") hide
        (effects (font (size 1 1) (thickness 0.15)))
      (tstamp 44653dc9-c279-4d9f-b184-3a1568c45780)
    )
    (pad "1" thru_hole circle (at 7.18 15.24 270) (size 1.6 1.6) (drill 1) (layers "*.Cu" "*.Mask")
      (net 15 "/D12") (pinfunction "COM") (pintype "passive") (tstamp 90b861b4-6a30-474b-be3d-b4f5dc65a119))
    (pad "2" thru_hole circle (at -7.62 25.4 270) (size 1.6 1.6) (drill 1) (layers "*.Cu" "*.Mask")
      (net 100 "unconnected-(U4-I7-Pad2)") (pinfunction "I7") (pintype "passive+no_connect") (tstamp 5d1638d3-5748-46b5-bc40-5d13a7267f42))
    (pad "3" thru_hole circle (at -7.62 27.94 270) (size 1.6 1.6) (drill 1) (layers "*.Cu" "*.Mask")
      (net 101 "unconnected-(U4-I6-Pad3)") (pinfunction "I6") (pintype "passive+no_connect") (tstamp 581d7e97-f877-472d-bc39-6461bd510750))
    (pad "4" thru_hole circle (at -7.62 30.48 270) (size 1.6 1.6) (drill 1) (layers "*.Cu" "*.Mask")
      (net 102 "unconnected-(U4-I5-Pad4)") (pinfunction "I5") (pintype "passive+no_connect") (tstamp 89f0f6eb-de46-4aea-9674-adf0066943bf))
    (pad "5" thru_hole circle (at -7.62 33.02 270) (size 1.6 1.6) (drill 1) (layers "*.Cu" "*.Mask")
      (net 103 "unconnected-(U4-I4-Pad5)") (pinfunction "I4") (pintype "passive+no_connect") (tstamp 0964f307-c20b-43fa-b38e-e62ccce7b07d))
    (pad "6" thru_hole circle (at -7.62 35.56 270) (size 1.6 1.6) (drill 1) (layers "*.Cu" "*.Mask")
      (net 104 "unconnected-(U4-I3-Pad6)") (pinfunction "I3") (pintype "passive+no_connect") (tstamp a621590e-5533-4359-b74e-e01fb3d1207b))
    (pad "7" thru_hole circle (at -7.62 38.1 270) (size 1.6 1.6) (drill 1) (layers "*.Cu" "*.Mask")
      (net 105 "unconnected-(U4-I2-Pad7)") (pinfunction "I2") (pintype "passive+no_connect") (tstamp 51cbc05b-6034-40cb-9c25-6ec315582e6b))
    (pad "8" thru_hole circle (at -7.62 40.64 270) (size 1.6 1.6) (drill 1) (layers "*.Cu" "*.Mask")
      (net 106 "unconnected-(U4-I1-Pad8)") (pinfunction "I1") (pintype "passive+no_connect") (tstamp 86b6cc5a-90cc-4699-9379-1420457f8e32))
    (pad "9" thru_hole circle (at -7.62 43.18 270) (size 1.6 1.6) (drill 1) (layers "*.Cu" "*.Mask")
      (net 107 "unconnected-(U4-I0-Pad9)") (pinfunction "I0") (pintype "passive+no_connect") (tstamp b7b3d31c-d4d1-4f7f-bd82-05c888a4edcc))
    (pad "10" thru_hole circle (at 7.18 25.4 270) (size 1.6 1.6) (drill 1) (layers "*.Cu" "*.Mask")
      (net 22 "/A3") (pinfunction "S0") (pintype "input") (tstamp 26b4611c-4af3-4a39-83f5-d369cc442e76))
    (pad "11" thru_hole circle (at 7.18 22.86 270) (size 1.6 1.6) (drill 1) (layers "*.Cu" "*.Mask")
      (net 21 "/A2") (pinfunction "S1") (pintype "input") (tstamp bf3cedd3-f665-4186-bf10-fee2ed392fa5))
    (pad "12" thru_hole circle (at 7.18 33.02 270) (size 1.6 1.6) (drill 1) (layers "*.Cu" "*.Mask")
      (net 29 "GND") (pinfunction "GND") (pintype "power_in") (tstamp cab30e11-0f29-4c81-8f5c-ca04a9bf25f8))
    (pad "13" thru_hole circle (at 7.18 17.78 270) (size 1.6 1.6) (drill 1) (layers "*.Cu" "*.Mask")
      (net 19 "/A0") (pinfunction "S3") (pintype "input") (tstamp 67dd62bf-a9b9-42d8-a261-5f6108788401))
    (pad "14" thru_hole circle (at 7.18 20.32 270) (size 1.6 1.6) (drill 1) (layers "*.Cu" "*.Mask")
      (net 20 "/A1") (pinfunction "S2") (pintype "input") (tstamp a2ef9470-d675-4227-bdf7-ff44a77362f7))
    (pad "15" thru_hole circle (at 7.18 27.94 270) (size 1.6 1.6) (drill 1) (layers "*.Cu" "*.Mask")
      (net 12 "/D9") (pinfunction "~{E}") (pintype "input") (tstamp 6caa62c9-8ccc-4518-b379-8dce8dd4befa))
    (pad "16" thru_hole circle (at -7.62 5.08 270) (size 1.6 1.6) (drill 1) (layers "*.Cu" "*.Mask")
      (net 108 "unconnected-(U4-I15-Pad16)") (pinfunction "I15") (pintype "passive+no_connect") (tstamp cf452085-7481-4906-aadb-c421f8fd7a62))
    (pad "17" thru_hole circle (at -7.62 7.62 270) (size 1.6 1.6) (drill 1) (layers "*.Cu" "*.Mask")
      (net 109 "unconnected-(U4-I14-Pad17)") (pinfunction "I14") (pintype "passive+no_connect") (tstamp 068c26c5-b5ba-474b-8ec4-31d872a49778))
    (pad "18" thru_hole circle (at -7.62 10.16 270) (size 1.6 1.6) (drill 1) (layers "*.Cu" "*.Mask")
      (net 110 "unconnected-(U4-I13-Pad18)") (pinfunction "I13") (pintype "passive+no_connect") (tstamp e6e589ef-e0d7-4360-b859-91ece64eec4b))
    (pad "19" thru_hole circle (at -7.62 12.7 270) (size 1.6 1.6) (drill 1) (layers "*.Cu" "*.Mask")
      (net 111 "unconnected-(U4-I12-Pad19)") (pinfunction "I12") (pintype "passive+no_connect") (tstamp 714184f7-dc43-4034-9f4b-d139342b69cb))
    (pad "20" thru_hole circle (at -7.62 15.24 270) (size 1.6 1.6) (drill 1) (layers "*.Cu" "*.Mask")
      (net 112 "unconnected-(U4-I11-Pad20)") (pinfunction "I11") (pintype "passive+no_connect") (tstamp e0ec2822-dd7c-4e93-9619-96ee4c1b80bc))
    (pad "21" thru_hole circle (at -7.62 17.78 270) (size 1.6 1.6) (drill 1) (layers "*.Cu" "*.Mask")
      (net 113 "unconnected-(U4-I10-Pad21)") (pinfunction "I10") (pintype "passive+no_connect") (tstamp 015f2149-dd7d-42df-8bc4-70c19d786a14))
    (pad "22" thru_hole circle (at -7.62 20.32 270) (size 1.6 1.6) (drill 1) (layers "*.Cu" "*.Mask")
      (net 114 "unconnected-(U4-I9-Pad22)") (pinfunction "I9") (pintype "passive+no_connect") (tstamp bff7e358-5b73-42f3-91db-d591ed461117))
    (pad "23" thru_hole circle (at -7.62 22.86 270) (size 1.6 1.6) (drill 1) (layers "*.Cu" "*.Mask")
      (net 115 "unconnected-(U4-I8-Pad23)") (pinfunction "I8") (pintype "passive+no_connect") (tstamp 8b854fce-c057-49c7-b3e8-e5a99813c80c))
    (pad "24" thru_hole circle (at 7.18 30.48 270) (size 1.6 1.6) (drill 1) (layers "*.Cu" "*.Mask")
      (net 27 "/5v") (pinfunction "VCC") (pintype "power_in") (tstamp a202d394-d134-47f9-ae39-e8a3ed0644f1))
  )

  (footprint "Module:Pololu_Breakout-16_15.2x20.3mm" (layer "F.Cu")
    (tstamp 07bd8d0d-0720-48a8-bb0c-ad03fcc8172b)
    (at 240.8 66.2 180)
    (descr "Pololu Breakout 16-pin 15.2x20.3mm 0.6x0.8\\")
    (tags "Pololu Breakout")
    (property "Sheetfile" "automatic_chessboard.kicad_sch")
    (property "Sheetname" "")
    (property "ki_description" "Pololu Breakout Board, Stepper Driver A4988")
    (property "ki_keywords" "Pololu Breakout Board Stepper Driver A4988")
    (path "/2596df7f-6488-47f4-84c0-232289fc0a86")
    (attr through_hole)
    (fp_text reference "A3" (at 6.35 -2.54) (layer "F.SilkS") hide
        (effects (font (size 1 1) (thickness 0.15)))
      (tstamp bee7a842-d722-41d0-b539-0f6c1bcfc0df)
    )
    (fp_text value "A4988" (at 8.6 17.7) (layer "F.Fab")
        (effects (font (size 1 1) (thickness 0.15)))
      (tstamp 9900c8ef-03ce-4418-9316-7493209a7ae3)
    )
    (fp_text user "${REFERENCE}" (at 6.35 0) (layer "F.Fab")
        (effects (font (size 1 1) (thickness 0.15)))
      (tstamp 84ff849f-1e8d-4453-b47c-e3424c36d968)
    )
    (fp_line (start -1.4 -1.4) (end -1.4 0)
      (stroke (width 0.12) (type solid)) (layer "F.SilkS") (tstamp 8e2d1f02-77ae-4151-8e3c-9db5507fe1f8))
    (fp_line (start -1.4 1.27) (end -1.4 19.18)
      (stroke (width 0.12) (type solid)) (layer "F.SilkS") (tstamp dde63d83-3034-4f1b-9a98-a9e6c8ae5bd4))
    (fp_line (start -1.4 19.18) (end 14.1 19.18)
      (stroke (width 0.12) (type solid)) (layer "F.SilkS") (tstamp b8da25fa-e820-4094-8322-e5f1e3794652))
    (fp_line (start 0 -1.4) (end -1.4 -1.4)
      (stroke (width 0.12) (type solid)) (layer "F.SilkS") (tstamp bce0a2b5-67e5-4aaa-902c-bb180a17dfe1))
    (fp_line (start 1.27 -1.4) (end 1.27 1.27)
      (stroke (width 0.12) (type solid)) (layer "F.SilkS") (tstamp 50b1af27-ab20-42bc-b103-6e91a16b3b59))
    (fp_line (start 1.27 1.27) (end -1.4 1.27)
      (stroke (width 0.12) (type solid)) (layer "F.SilkS") (tstamp d9e1eb32-72cd-4aae-b60f-5ab2acce2fc6))
    (fp_line (start 1.27 1.27) (end 1.27 19.18)
      (stroke (width 0.12) (type solid)) (layer "F.SilkS") (tstamp 3fb248a2-e712-4f53-9b86-b160177eade7))
    (fp_line (start 11.43 -1.4) (end 11.43 19.18)
      (stroke (width 0.12) (type solid)) (layer "F.SilkS") (tstamp fce6a0fa-d063-4aad-babd-7f384d533537))
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