(kicad_pcb (version 20211014) (generator pcbnew)
  (general (thickness 1.6))
  (paper "A4")
  (layers (0 "F.Cu" signal) (31 "B.Cu" signal) (36 "B.SilkS" user "B.Silkscreen") (37 "F.SilkS" user "F.Silkscreen") (38 "B.Mask" user) (39 "F.Mask" user) (44 "Edge.Cuts" user) (46 "B.CrtYd" user "B.Courtyard") (47 "F.CrtYd" user "F.Courtyard") (48 "B.Fab" user) (49 "F.Fab" user))
  (setup (pad_to_mask_clearance 0.05))
  (net 0 "")
  (net 1 "3V3")
  (net 2 "A0")
  (net 3 "GND")
  (net 4 "COILA")
  (footprint "EMF:PinSocket_1x15_P2.54mm_Vertical" (layer "F.Cu") (at 8.000 25.240)
    (fp_text reference "H1" (at 0 -2.5) (layer "F.Fab") (effects (font (size 1 1) (thickness 0.15))))
    (fp_text value "Nano R4 analog/power socket" (at 0 2.5) (layer "F.Fab") (effects (font (size 1 1) (thickness 0.15))))
    (pad "1" thru_hole rect (at 0.000 0.000) (size 1.7 1.7) (drill 1.0) (layers *.Cu *.Mask))
    (pad "2" thru_hole circle (at 2.540 0.000) (size 1.7 1.7) (drill 1.0) (layers *.Cu *.Mask) (net 1 "3V3"))
    (pad "3" thru_hole circle (at 5.080 0.000) (size 1.7 1.7) (drill 1.0) (layers *.Cu *.Mask))
    (pad "4" thru_hole circle (at 7.620 0.000) (size 1.7 1.7) (drill 1.0) (layers *.Cu *.Mask) (net 2 "A0"))
    (pad "5" thru_hole circle (at 10.160 0.000) (size 1.7 1.7) (drill 1.0) (layers *.Cu *.Mask))
    (pad "6" thru_hole circle (at 12.700 0.000) (size 1.7 1.7) (drill 1.0) (layers *.Cu *.Mask))
    (pad "7" thru_hole circle (at 15.240 0.000) (size 1.7 1.7) (drill 1.0) (layers *.Cu *.Mask))
    (pad "8" thru_hole circle (at 17.780 0.000) (size 1.7 1.7) (drill 1.0) (layers *.Cu *.Mask))
    (pad "9" thru_hole circle (at 20.320 0.000) (size 1.7 1.7) (drill 1.0) (layers *.Cu *.Mask))
    (pad "10" thru_hole circle (at 22.860 0.000) (size 1.7 1.7) (drill 1.0) (layers *.Cu *.Mask))
    (pad "11" thru_hole circle (at 25.400 0.000) (size 1.7 1.7) (drill 1.0) (layers *.Cu *.Mask))
    (pad "12" thru_hole circle (at 27.940 0.000) (size 1.7 1.7) (drill 1.0) (layers *.Cu *.Mask))
    (pad "13" thru_hole circle (at 30.480 0.000) (size 1.7 1.7) (drill 1.0) (layers *.Cu *.Mask))
    (pad "14" thru_hole circle (at 33.020 0.000) (size 1.7 1.7) (drill 1.0) (layers *.Cu *.Mask) (net 3 "GND"))
    (pad "15" thru_hole circle (at 35.560 0.000) (size 1.7 1.7) (drill 1.0) (layers *.Cu *.Mask))
  )
  (footprint "EMF:PinSocket_1x15_P2.54mm_Vertical" (layer "F.Cu") (at 8.000 10.000)
    (fp_text reference "H2" (at 0 -2.5) (layer "F.Fab") (effects (font (size 1 1) (thickness 0.15))))
    (fp_text value "Nano R4 digital socket" (at 0 2.5) (layer "F.Fab") (effects (font (size 1 1) (thickness 0.15))))
    (pad "1" thru_hole rect (at 0.000 0.000) (size 1.7 1.7) (drill 1.0) (layers *.Cu *.Mask))
    (pad "2" thru_hole circle (at 2.540 0.000) (size 1.7 1.7) (drill 1.0) (layers *.Cu *.Mask))
    (pad "3" thru_hole circle (at 5.080 0.000) (size 1.7 1.7) (drill 1.0) (layers *.Cu *.Mask))
    (pad "4" thru_hole circle (at 7.620 0.000) (size 1.7 1.7) (drill 1.0) (layers *.Cu *.Mask))
    (pad "5" thru_hole circle (at 10.160 0.000) (size 1.7 1.7) (drill 1.0) (layers *.Cu *.Mask))
    (pad "6" thru_hole circle (at 12.700 0.000) (size 1.7 1.7) (drill 1.0) (layers *.Cu *.Mask))
    (pad "7" thru_hole circle (at 15.240 0.000) (size 1.7 1.7) (drill 1.0) (layers *.Cu *.Mask))
    (pad "8" thru_hole circle (at 17.780 0.000) (size 1.7 1.7) (drill 1.0) (layers *.Cu *.Mask))
    (pad "9" thru_hole circle (at 20.320 0.000) (size 1.7 1.7) (drill 1.0) (layers *.Cu *.Mask))
    (pad "10" thru_hole circle (at 22.860 0.000) (size 1.7 1.7) (drill 1.0) (layers *.Cu *.Mask))
    (pad "11" thru_hole circle (at 25.400 0.000) (size 1.7 1.7) (drill 1.0) (layers *.Cu *.Mask))
    (pad "12" thru_hole circle (at 27.940 0.000) (size 1.7 1.7) (drill 1.0) (layers *.Cu *.Mask) (net 3 "GND"))
    (pad "13" thru_hole circle (at 30.480 0.000) (size 1.7 1.7) (drill 1.0) (layers *.Cu *.Mask))
    (pad "14" thru_hole circle (at 33.020 0.000) (size 1.7 1.7) (drill 1.0) (layers *.Cu *.Mask))
    (pad "15" thru_hole circle (at 35.560 0.000) (size 1.7 1.7) (drill 1.0) (layers *.Cu *.Mask))
  )
  (footprint "EMF:R_Axial_P10.16mm_Vertical" (layer "F.Cu") (at 10.540 32.000)
    (fp_text reference "R1" (at 0 -2.5) (layer "F.Fab") (effects (font (size 1 1) (thickness 0.15))))
    (fp_text value "10k" (at 0 2.5) (layer "F.Fab") (effects (font (size 1 1) (thickness 0.15))))
    (pad "1" thru_hole rect (at 0.000 0.000) (size 1.6 1.6) (drill 0.8) (layers *.Cu *.Mask) (net 1 "3V3"))
    (pad "2" thru_hole circle (at 0.000 10.160) (size 1.6 1.6) (drill 0.8) (layers *.Cu *.Mask) (net 2 "A0"))
  )
  (footprint "EMF:R_Axial_P10.16mm_Vertical" (layer "F.Cu") (at 20.700 42.160)
    (fp_text reference "R2" (at 0 -2.5) (layer "F.Fab") (effects (font (size 1 1) (thickness 0.15))))
    (fp_text value "10k" (at 0 2.5) (layer "F.Fab") (effects (font (size 1 1) (thickness 0.15))))
    (pad "1" thru_hole rect (at 0.000 0.000) (size 1.6 1.6) (drill 0.8) (layers *.Cu *.Mask) (net 2 "A0"))
    (pad "2" thru_hole circle (at 0.000 10.160) (size 1.6 1.6) (drill 0.8) (layers *.Cu *.Mask) (net 3 "GND"))
  )
  (footprint "EMF:CP_Radial_D10.0mm_P5.00mm" (layer "F.Cu") (at 28.000 42.160)
    (fp_text reference "C1" (at 0 -2.5) (layer "F.Fab") (effects (font (size 1 1) (thickness 0.15))))
    (fp_text value "470uF" (at 0 2.5) (layer "F.Fab") (effects (font (size 1 1) (thickness 0.15))))
    (pad "1" thru_hole rect (at 0.000 0.000) (size 2.0 2.0) (drill 1.0) (layers *.Cu *.Mask) (net 2 "A0"))
    (pad "2" thru_hole circle (at 5.000 0.000) (size 2.0 2.0) (drill 1.0) (layers *.Cu *.Mask) (net 4 "COILA"))
  )
  (footprint "EMF:PinHeader_1x03_P2.54mm_Vertical" (layer "F.Cu") (at 5.500 36.000)
    (fp_text reference "J1" (at 0 -2.5) (layer "F.Fab") (effects (font (size 1 1) (thickness 0.15))))
    (fp_text value "Ext Arduino 3V3/A0/GND" (at 0 2.5) (layer "F.Fab") (effects (font (size 1 1) (thickness 0.15))))
    (pad "1" thru_hole rect (at 0.000 0.000) (size 1.7 1.7) (drill 1.0) (layers *.Cu *.Mask) (net 1 "3V3"))
    (pad "2" thru_hole circle (at 0.000 2.540) (size 1.7 1.7) (drill 1.0) (layers *.Cu *.Mask) (net 2 "A0"))
    (pad "3" thru_hole circle (at 0.000 5.080) (size 1.7 1.7) (drill 1.0) (layers *.Cu *.Mask) (net 3 "GND"))
  )
  (footprint "EMF:MountingHole_3.2mm_M3_Pad" (layer "F.Cu") (at 56.000 40.000)
    (fp_text reference "TA1" (at 0 -2.5) (layer "F.Fab") (effects (font (size 1 1) (thickness 0.15))))
    (fp_text value "Coil terminal M3" (at 0 2.5) (layer "F.Fab") (effects (font (size 1 1) (thickness 0.15))))
    (pad "1" thru_hole circle (at 0.000 0.000) (size 6.0 6.0) (drill 3.2) (layers *.Cu *.Mask) (net 4 "COILA"))
  )
  (footprint "EMF:MountingHole_3.2mm_M3_Pad" (layer "F.Cu") (at 56.000 52.320)
    (fp_text reference "TB1" (at 0 -2.5) (layer "F.Fab") (effects (font (size 1 1) (thickness 0.15))))
    (fp_text value "Coil terminal M3" (at 0 2.5) (layer "F.Fab") (effects (font (size 1 1) (thickness 0.15))))
    (pad "1" thru_hole circle (at 0.000 0.000) (size 6.0 6.0) (drill 3.2) (layers *.Cu *.Mask) (net 3 "GND"))
  )
  (footprint "EMF:MountingHole_3.2mm_M3_Pad" (layer "F.Cu") (at 68.000 40.000)
    (fp_text reference "TA2" (at 0 -2.5) (layer "F.Fab") (effects (font (size 1 1) (thickness 0.15))))
    (fp_text value "Coil terminal M3" (at 0 2.5) (layer "F.Fab") (effects (font (size 1 1) (thickness 0.15))))
    (pad "1" thru_hole circle (at 0.000 0.000) (size 6.0 6.0) (drill 3.2) (layers *.Cu *.Mask) (net 4 "COILA"))
  )
  (footprint "EMF:MountingHole_3.2mm_M3_Pad" (layer "F.Cu") (at 68.000 52.320)
    (fp_text reference "TB2" (at 0 -2.5) (layer "F.Fab") (effects (font (size 1 1) (thickness 0.15))))
    (fp_text value "Coil terminal M3" (at 0 2.5) (layer "F.Fab") (effects (font (size 1 1) (thickness 0.15))))
    (pad "1" thru_hole circle (at 0.000 0.000) (size 6.0 6.0) (drill 3.2) (layers *.Cu *.Mask) (net 3 "GND"))
  )
  (footprint "EMF:MountingHole_3.2mm_M3" (layer "F.Cu") (at 3.500 3.500)
    (fp_text reference "MH1" (at 0 -2.5) (layer "F.Fab") (effects (font (size 1 1) (thickness 0.15))))
    (fp_text value "MountingHole_3.2mm_M3" (at 0 2.5) (layer "F.Fab") (effects (font (size 1 1) (thickness 0.15))))
    (pad "" np_thru_hole circle (at 0 0) (size 3.2 3.2) (drill 3.2) (layers *.Cu *.Mask))
  )
  (footprint "EMF:MountingHole_3.2mm_M3" (layer "F.Cu") (at 76.500 3.500)
    (fp_text reference "MH2" (at 0 -2.5) (layer "F.Fab") (effects (font (size 1 1) (thickness 0.15))))
    (fp_text value "MountingHole_3.2mm_M3" (at 0 2.5) (layer "F.Fab") (effects (font (size 1 1) (thickness 0.15))))
    (pad "" np_thru_hole circle (at 0 0) (size 3.2 3.2) (drill 3.2) (layers *.Cu *.Mask))
  )
  (footprint "EMF:MountingHole_3.2mm_M3" (layer "F.Cu") (at 3.500 56.500)
    (fp_text reference "MH3" (at 0 -2.5) (layer "F.Fab") (effects (font (size 1 1) (thickness 0.15))))
    (fp_text value "MountingHole_3.2mm_M3" (at 0 2.5) (layer "F.Fab") (effects (font (size 1 1) (thickness 0.15))))
    (pad "" np_thru_hole circle (at 0 0) (size 3.2 3.2) (drill 3.2) (layers *.Cu *.Mask))
  )
  (footprint "EMF:MountingHole_3.2mm_M3" (layer "F.Cu") (at 76.500 56.500)
    (fp_text reference "MH4" (at 0 -2.5) (layer "F.Fab") (effects (font (size 1 1) (thickness 0.15))))
    (fp_text value "MountingHole_3.2mm_M3" (at 0 2.5) (layer "F.Fab") (effects (font (size 1 1) (thickness 0.15))))
    (pad "" np_thru_hole circle (at 0 0) (size 3.2 3.2) (drill 3.2) (layers *.Cu *.Mask))
  )
  (gr_line (start 0 0) (end 80.0 0) (layer "Edge.Cuts") (width 0.1))
  (gr_line (start 80.0 0) (end 80.0 60.0) (layer "Edge.Cuts") (width 0.1))
  (gr_line (start 80.0 60.0) (end 0 60.0) (layer "Edge.Cuts") (width 0.1))
  (gr_line (start 0 60.0) (end 0 0) (layer "Edge.Cuts") (width 0.1))
  (gr_line (start 3.280 8.620) (end 48.280 8.620) (layer "F.SilkS") (width 0.2))
  (gr_line (start 48.280 8.620) (end 48.280 26.620) (layer "F.SilkS") (width 0.2))
  (gr_line (start 48.280 26.620) (end 3.280 26.620) (layer "F.SilkS") (width 0.2))
  (gr_line (start 3.280 26.620) (end 3.280 8.620) (layer "F.SilkS") (width 0.2))
  (gr_line (start 2.080 13.120) (end 9.280 13.120) (layer "F.SilkS") (width 0.15))
  (gr_line (start 9.280 13.120) (end 9.280 22.120) (layer "F.SilkS") (width 0.15))
  (gr_line (start 9.280 22.120) (end 2.080 22.120) (layer "F.SilkS") (width 0.15))
  (gr_line (start 2.080 22.120) (end 2.080 13.120) (layer "F.SilkS") (width 0.15))
  (gr_line (start 6.730 8.730) (end 44.830 8.730) (layer "F.SilkS") (width 0.15))
  (gr_line (start 44.830 8.730) (end 44.830 11.270) (layer "F.SilkS") (width 0.15))
  (gr_line (start 44.830 11.270) (end 6.730 11.270) (layer "F.SilkS") (width 0.15))
  (gr_line (start 6.730 11.270) (end 6.730 8.730) (layer "F.SilkS") (width 0.15))
  (gr_line (start 6.730 23.970) (end 44.830 23.970) (layer "F.SilkS") (width 0.15))
  (gr_line (start 44.830 23.970) (end 44.830 26.510) (layer "F.SilkS") (width 0.15))
  (gr_line (start 44.830 26.510) (end 6.730 26.510) (layer "F.SilkS") (width 0.15))
  (gr_line (start 6.730 26.510) (end 6.730 23.970) (layer "F.SilkS") (width 0.15))
  (gr_line (start 9.290 34.200) (end 11.790 34.200) (layer "F.SilkS") (width 0.15))
  (gr_line (start 11.790 34.200) (end 11.790 39.960) (layer "F.SilkS") (width 0.15))
  (gr_line (start 11.790 39.960) (end 9.290 39.960) (layer "F.SilkS") (width 0.15))
  (gr_line (start 9.290 39.960) (end 9.290 34.200) (layer "F.SilkS") (width 0.15))
  (gr_line (start 10.540 33.000) (end 10.540 34.200) (layer "F.SilkS") (width 0.15))
  (gr_line (start 10.540 39.960) (end 10.540 41.160) (layer "F.SilkS") (width 0.15))
  (gr_line (start 19.450 44.360) (end 21.950 44.360) (layer "F.SilkS") (width 0.15))
  (gr_line (start 21.950 44.360) (end 21.950 50.120) (layer "F.SilkS") (width 0.15))
  (gr_line (start 21.950 50.120) (end 19.450 50.120) (layer "F.SilkS") (width 0.15))
  (gr_line (start 19.450 50.120) (end 19.450 44.360) (layer "F.SilkS") (width 0.15))
  (gr_line (start 20.700 43.160) (end 20.700 44.360) (layer "F.SilkS") (width 0.15))
  (gr_line (start 20.700 50.120) (end 20.700 51.320) (layer "F.SilkS") (width 0.15))
  (gr_line (start 27.000 38.960) (end 28.600 38.960) (layer "F.SilkS") (width 0.2))
  (gr_line (start 27.800 38.160) (end 27.800 39.760) (layer "F.SilkS") (width 0.2))
  (gr_line (start 4.230 34.730) (end 6.770 34.730) (layer "F.SilkS") (width 0.15))
  (gr_line (start 6.770 34.730) (end 6.770 42.350) (layer "F.SilkS") (width 0.15))
  (gr_line (start 6.770 42.350) (end 4.230 42.350) (layer "F.SilkS") (width 0.15))
  (gr_line (start 4.230 42.350) (end 4.230 34.730) (layer "F.SilkS") (width 0.15))
  (gr_circle (center 30.500 42.160) (end 35.700 42.160) (layer "F.SilkS") (width 0.15))
  (gr_circle (center 56.000 40.000) (end 59.600 40.000) (layer "F.SilkS") (width 0.15))
  (gr_circle (center 56.000 52.320) (end 59.600 52.320) (layer "F.SilkS") (width 0.15))
  (gr_circle (center 68.000 40.000) (end 71.600 40.000) (layer "F.SilkS") (width 0.15))
  (gr_circle (center 68.000 52.320) (end 71.600 52.320) (layer "F.SilkS") (width 0.15))
  (gr_text "NANO R4" (at 28.780 16.420 0) (layer "F.SilkS") (effects (font (size 2.0 2.0) (thickness 0.30))))
  (gr_text "USB-C <- / parts side UP" (at 28.780 19.620 0) (layer "F.SilkS") (effects (font (size 1.2 1.2) (thickness 0.18))))
  (gr_text "USB" (at 5.680 17.620 90) (layer "F.SilkS") (effects (font (size 1.2 1.2) (thickness 0.18))))
  (gr_text "3V3" (at 10.540 27.840 0) (layer "F.SilkS") (effects (font (size 1.0 1.0) (thickness 0.15))))
  (gr_text "A0" (at 15.620 27.840 0) (layer "F.SilkS") (effects (font (size 1.0 1.0) (thickness 0.15))))
  (gr_text "GND" (at 41.020 27.840 0) (layer "F.SilkS") (effects (font (size 1.0 1.0) (thickness 0.15))))
  (gr_text "PIN1 (USB side)" (at 7.000 7.400 0) (layer "F.SilkS") (effects (font (size 1.0 1.0) (thickness 0.15)) (justify left)))
  (gr_text "GND" (at 35.940 7.400 0) (layer "F.SilkS") (effects (font (size 1.0 1.0) (thickness 0.15))))
  (gr_text "TX" (at 43.560 7.400 0) (layer "F.SilkS") (effects (font (size 1.0 1.0) (thickness 0.15))))
  (gr_text "R1 10k" (at 8.640 37.080 90) (layer "F.SilkS") (effects (font (size 1.0 1.0) (thickness 0.15))))
  (gr_text "R2 10k" (at 22.600 47.240 90) (layer "F.SilkS") (effects (font (size 1.0 1.0) (thickness 0.15))))
  (gr_text "C1 470uF" (at 30.500 48.760 0) (layer "F.SilkS") (effects (font (size 1.0 1.0) (thickness 0.15))))
  (gr_text "J1" (at 5.500 33.600 0) (layer "F.SilkS") (effects (font (size 1.0 1.0) (thickness 0.15))))
  (gr_text "3V3" (at 4.100 36.000 0) (layer "F.SilkS") (effects (font (size 0.9 0.9) (thickness 0.15)) (justify right)))
  (gr_text "A0" (at 4.100 38.540 0) (layer "F.SilkS") (effects (font (size 0.9 0.9) (thickness 0.15)) (justify right)))
  (gr_text "GND" (at 4.100 41.080 0) (layer "F.SilkS") (effects (font (size 0.9 0.9) (thickness 0.15)) (justify right)))
  (gr_text "COIL A" (at 62.000 35.400 0) (layer "F.SilkS") (effects (font (size 1.3 1.3) (thickness 0.20))))
  (gr_text "COIL B (GND)" (at 62.000 47.720 0) (layer "F.SilkS") (effects (font (size 1.3 1.3) (thickness 0.20))))
  (gr_text "EMF  Nano R4 Carrier  v1" (at 64.000 13.000 0) (layer "F.SilkS") (effects (font (size 1.4 1.4) (thickness 0.21))))
  (gr_text "Faraday induction logger" (at 64.000 15.600 0) (layer "F.SilkS") (effects (font (size 1.1 1.1) (thickness 0.17))))
  (gr_text "3V3-[R1]-A-[R2]-GND" (at 64.000 20.000 0) (layer "F.SilkS") (effects (font (size 1.0 1.0) (thickness 0.15))))
  (gr_text "A -> A0, A -(+C1-)- COIL" (at 64.000 22.200 0) (layer "F.SilkS") (effects (font (size 1.0 1.0) (thickness 0.15))))
  (gr_text "2026-11" (at 64.000 25.600 0) (layer "F.SilkS") (effects (font (size 1.0 1.0) (thickness 0.15))))
  (segment (start 10.540 25.240) (end 10.540 32.000) (width 0.5) (layer "F.Cu") (net 1))
  (segment (start 5.500 36.000) (end 5.500 32.000) (width 0.5) (layer "F.Cu") (net 1))
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  (segment (start 5.500 41.080) (end 5.500 52.320) (width 1.0) (layer "F.Cu") (net 3))
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  (segment (start 41.020 25.240) (end 41.020 52.320) (width 1.0) (layer "F.Cu") (net 3))
  (segment (start 35.940 10.000) (end 35.940 17.620) (width 0.5) (layer "B.Cu") (net 3))
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  (segment (start 33.000 42.160) (end 35.160 40.000) (width 0.8) (layer "B.Cu") (net 4))
  (segment (start 35.160 40.000) (end 68.000 40.000) (width 0.8) (layer "B.Cu") (net 4))
)