diff --git a/hardware/kicad/PCB_LAYOUT.md b/hardware/kicad/PCB_LAYOUT.md
index 2d30b86..12aca8a 100644
--- a/hardware/kicad/PCB_LAYOUT.md
+++ b/hardware/kicad/PCB_LAYOUT.md
@@ -1,5 +1,28 @@
 # SN-L00 PCB Layout Guide
 
+## Quick Start - Complete the Layout in KiCad
+
+1. **Open the project**: `SN-L00.kicad_pro`
+2. **Import footprints**:
+   - Open PCB Editor
+   - Tools → Update PCB from Schematic (F8)
+   - Click "Update PCB" to import all footprints
+3. **Place components**:
+   - In Scripting Console (Tools → Scripting Console):
+   ```python
+   exec(open('scripts/place_components.py').read())
+   ```
+   - Or manually place using coordinates below
+4. **Add mounting holes**:
+   - Place `MountingHole:MountingHole_3.2mm_M3` at (14, 5) and (14, 95)
+5. **Route traces**:
+   - Use Freerouting: File → Export → Specctra DSN, then import routed SES
+   - Or route manually with 'X' key
+6. **Fill zones**:
+   - Press 'B' to fill all zones
+7. **Run DRC**: Inspect → Design Rules Checker
+8. **Export Gerbers**: File → Fabrication Outputs → Gerbers
+
 ## Board Dimensions
 
 | Parameter | Value | Notes |
diff --git a/hardware/kicad/SN-L00.kicad_pcb b/hardware/kicad/SN-L00.kicad_pcb
index a7c4c8e..a48543c 100644
--- a/hardware/kicad/SN-L00.kicad_pcb
+++ b/hardware/kicad/SN-L00.kicad_pcb
@@ -26,10 +26,7 @@
     (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)
@@ -46,8 +43,6 @@
       (usegerberattributes yes)
       (usegerberadvancedattributes yes)
       (creategerberjobfile yes)
-      (dashed_line_dash_ratio 12.000000)
-      (dashed_line_gap_ratio 3.000000)
       (svgprecision 4)
       (plotframeref no)
       (viasonmask no)
@@ -56,8 +51,6 @@
       (hpglpennumber 1)
       (hpglpenspeed 20)
       (hpglpendiameter 15.000000)
-      (pdf_front_fp_property_popups yes)
-      (pdf_back_fp_property_popups yes)
       (dxfpolygonmode yes)
       (dxfimperialunits yes)
       (dxfusepcbnewfont yes)
@@ -76,8 +69,6 @@
       (outputdirectory "../manufacturing/gerbers/")
     )
   )
-
-  ;; Net definitions
   (net 0 "")
   (net 1 "GND")
   (net 2 "+12V")
@@ -91,501 +82,51 @@
   (net 10 "RET_DIV")
   (net 11 "RET_BUF")
 
-  ;; Net classes
-  (net_class "Default" ""
-    (clearance 0.2)
-    (trace_width 0.25)
-    (via_dia 0.6)
-    (via_drill 0.3)
-    (uvia_dia 0.3)
-    (uvia_drill 0.1)
-  )
-  (net_class "Power" ""
-    (clearance 0.3)
-    (trace_width 0.5)
-    (via_dia 0.8)
-    (via_drill 0.4)
-    (uvia_dia 0.3)
-    (uvia_drill 0.1)
-    (add_net "+12V")
-    (add_net "+3.3V")
-    (add_net "GND")
-  )
-
-  ;; Board outline - 6HP Eurorack PCB (28mm x 100mm)
   (gr_rect
     (start 0 0)
     (end 28 100)
-    (stroke (width 0.15) (type solid))
+    (stroke
+      (width 0.15)
+      (type solid)
+    )
     (fill none)
     (layer "Edge.Cuts")
-    (uuid "board-outline")
+    (uuid "a1b2c3d4-e5f6-7890-abcd-ef1234567890")
   )
 
-  ;; ============================================
-  ;; MOUNTING HOLES
-  ;; ============================================
-
-  ;; Top mounting hole (MH1)
-  (footprint "MountingHole:MountingHole_3.2mm_M3"
-    (layer "F.Cu")
-    (uuid "00000000-0000-0000-0000-000000000001")
-    (at 14 5)
-    (property "Reference" "MH1" (at 0 -3 0) (layer "F.SilkS") (effects (font (size 0.8 0.8) (thickness 0.15))))
-    (property "Value" "MountingHole" (at 0 3 0) (layer "F.Fab") (effects (font (size 0.8 0.8) (thickness 0.15))))
-    (pad "" np_thru_hole circle (at 0 0) (size 3.2 3.2) (drill 3.2) (layers "*.Cu" "*.Mask"))
-  )
-
-  ;; Bottom mounting hole (MH2)
-  (footprint "MountingHole:MountingHole_3.2mm_M3"
-    (layer "F.Cu")
-    (uuid "00000000-0000-0000-0000-000000000002")
-    (at 14 95)
-    (property "Reference" "MH2" (at 0 -3 0) (layer "F.SilkS") (effects (font (size 0.8 0.8) (thickness 0.15))))
-    (property "Value" "MountingHole" (at 0 3 0) (layer "F.Fab") (effects (font (size 0.8 0.8) (thickness 0.15))))
-    (pad "" np_thru_hole circle (at 0 0) (size 3.2 3.2) (drill 3.2) (layers "*.Cu" "*.Mask"))
-  )
-
-  ;; ============================================
-  ;; MODULES (Hand-solder)
-  ;; ============================================
-
-  ;; OLED 128x32 I2C Module (MOD2) - 4-pin header
-  (footprint "SN-L00:OLED_128x32_I2C"
-    (layer "F.Cu")
-    (uuid "00000000-0000-0000-0000-000000000010")
-    (at 14 17.5)
-    (property "Reference" "MOD2" (at 0 -7 0) (layer "F.SilkS") (effects (font (size 1 1) (thickness 0.15))))
-    (property "Value" "OLED_128x32" (at 0 7 0) (layer "F.Fab") (effects (font (size 1 1) (thickness 0.15))))
-    (fp_line (start -14 -5) (end 14 -5) (stroke (width 0.12) (type solid)) (layer "F.SilkS"))
-    (fp_line (start 14 -5) (end 14 5) (stroke (width 0.12) (type solid)) (layer "F.SilkS"))
-    (fp_line (start 14 5) (end -14 5) (stroke (width 0.12) (type solid)) (layer "F.SilkS"))
-    (fp_line (start -14 5) (end -14 -5) (stroke (width 0.12) (type solid)) (layer "F.SilkS"))
-    (pad "1" thru_hole circle (at -3.81 0) (size 1.7 1.7) (drill 1.0) (layers "*.Cu" "*.Mask") (net 1 "GND"))
-    (pad "2" thru_hole circle (at -1.27 0) (size 1.7 1.7) (drill 1.0) (layers "*.Cu" "*.Mask") (net 3 "+3.3V"))
-    (pad "3" thru_hole circle (at 1.27 0) (size 1.7 1.7) (drill 1.0) (layers "*.Cu" "*.Mask") (net 5 "SCL"))
-    (pad "4" thru_hole circle (at 3.81 0) (size 1.7 1.7) (drill 1.0) (layers "*.Cu" "*.Mask") (net 4 "SDA"))
-  )
-
-  ;; RP2040-Zero Module (MOD1) - 2x9 header
-  (footprint "SN-L00:RP2040-Zero"
-    (layer "F.Cu")
-    (uuid "00000000-0000-0000-0000-000000000011")
-    (at 14 46.5)
-    (property "Reference" "MOD1" (at 0 -13 0) (layer "F.SilkS") (effects (font (size 1 1) (thickness 0.15))))
-    (property "Value" "RP2040-Zero" (at 0 13 0) (layer "F.Fab") (effects (font (size 1 1) (thickness 0.15))))
-    (fp_line (start -9.5 -11.5) (end 9.5 -11.5) (stroke (width 0.12) (type solid)) (layer "F.SilkS"))
-    (fp_line (start 9.5 -11.5) (end 9.5 11.5) (stroke (width 0.12) (type solid)) (layer "F.SilkS"))
-    (fp_line (start 9.5 11.5) (end -9.5 11.5) (stroke (width 0.12) (type solid)) (layer "F.SilkS"))
-    (fp_line (start -9.5 11.5) (end -9.5 -11.5) (stroke (width 0.12) (type solid)) (layer "F.SilkS"))
-    ;; Left column (pins 1-9)
-    (pad "1" thru_hole rect (at -7.62 -10.16) (size 1.7 1.7) (drill 1.0) (layers "*.Cu" "*.Mask"))
-    (pad "2" thru_hole circle (at -7.62 -7.62) (size 1.7 1.7) (drill 1.0) (layers "*.Cu" "*.Mask") (net 1 "GND"))
-    (pad "3" thru_hole circle (at -7.62 -5.08) (size 1.7 1.7) (drill 1.0) (layers "*.Cu" "*.Mask") (net 3 "+3.3V"))
-    (pad "4" thru_hole circle (at -7.62 -2.54) (size 1.7 1.7) (drill 1.0) (layers "*.Cu" "*.Mask"))
-    (pad "5" thru_hole circle (at -7.62 0) (size 1.7 1.7) (drill 1.0) (layers "*.Cu" "*.Mask"))
-    (pad "6" thru_hole circle (at -7.62 2.54) (size 1.7 1.7) (drill 1.0) (layers "*.Cu" "*.Mask") (net 6 "TRIG_OUT"))
-    (pad "7" thru_hole circle (at -7.62 5.08) (size 1.7 1.7) (drill 1.0) (layers "*.Cu" "*.Mask") (net 7 "RETURN_IN"))
-    (pad "8" thru_hole circle (at -7.62 7.62) (size 1.7 1.7) (drill 1.0) (layers "*.Cu" "*.Mask") (net 8 "BTN"))
-    (pad "9" thru_hole circle (at -7.62 10.16) (size 1.7 1.7) (drill 1.0) (layers "*.Cu" "*.Mask"))
-    ;; Right column (pins 10-18)
-    (pad "10" thru_hole circle (at 7.62 -10.16) (size 1.7 1.7) (drill 1.0) (layers "*.Cu" "*.Mask") (net 3 "+3.3V"))
-    (pad "11" thru_hole circle (at 7.62 -7.62) (size 1.7 1.7) (drill 1.0) (layers "*.Cu" "*.Mask") (net 1 "GND"))
-    (pad "12" thru_hole circle (at 7.62 -5.08) (size 1.7 1.7) (drill 1.0) (layers "*.Cu" "*.Mask") (net 4 "SDA"))
-    (pad "13" thru_hole circle (at 7.62 -2.54) (size 1.7 1.7) (drill 1.0) (layers "*.Cu" "*.Mask") (net 5 "SCL"))
-    (pad "14" thru_hole circle (at 7.62 0) (size 1.7 1.7) (drill 1.0) (layers "*.Cu" "*.Mask"))
-    (pad "15" thru_hole circle (at 7.62 2.54) (size 1.7 1.7) (drill 1.0) (layers "*.Cu" "*.Mask"))
-    (pad "16" thru_hole circle (at 7.62 5.08) (size 1.7 1.7) (drill 1.0) (layers "*.Cu" "*.Mask"))
-    (pad "17" thru_hole circle (at 7.62 7.62) (size 1.7 1.7) (drill 1.0) (layers "*.Cu" "*.Mask"))
-    (pad "18" thru_hole circle (at 7.62 10.16) (size 1.7 1.7) (drill 1.0) (layers "*.Cu" "*.Mask"))
-  )
-
-  ;; ============================================
-  ;; USER INTERFACE
-  ;; ============================================
-
-  ;; SW1 - Tactile Switch 6x6mm
-  (footprint "Button_Switch_SMD:SW_Push_1P1T_NO_6x6mm_H9.5mm"
-    (layer "F.Cu")
-    (uuid "00000000-0000-0000-0000-000000000020")
-    (at 14 31.5)
-    (property "Reference" "SW1" (at 0 -5 0) (layer "F.SilkS") (effects (font (size 0.8 0.8) (thickness 0.15))))
-    (property "Value" "6x6mm" (at 0 5 0) (layer "F.Fab") (effects (font (size 0.8 0.8) (thickness 0.15))))
-    (fp_line (start -3 -3) (end 3 -3) (stroke (width 0.12) (type solid)) (layer "F.SilkS"))
-    (fp_line (start 3 -3) (end 3 3) (stroke (width 0.12) (type solid)) (layer "F.SilkS"))
-    (fp_line (start 3 3) (end -3 3) (stroke (width 0.12) (type solid)) (layer "F.SilkS"))
-    (fp_line (start -3 3) (end -3 -3) (stroke (width 0.12) (type solid)) (layer "F.SilkS"))
-    (pad "1" smd rect (at -3.85 2.25) (size 1.6 1.4) (layers "F.Cu" "F.Paste" "F.Mask") (net 8 "BTN"))
-    (pad "2" smd rect (at 3.85 2.25) (size 1.6 1.4) (layers "F.Cu" "F.Paste" "F.Mask") (net 1 "GND"))
-    (pad "3" smd rect (at -3.85 -2.25) (size 1.6 1.4) (layers "F.Cu" "F.Paste" "F.Mask") (net 8 "BTN"))
-    (pad "4" smd rect (at 3.85 -2.25) (size 1.6 1.4) (layers "F.Cu" "F.Paste" "F.Mask") (net 1 "GND"))
-  )
-
-  ;; R1 - Button pullup 10K (0603)
-  (footprint "Resistor_SMD:R_0603_1608Metric"
-    (layer "F.Cu")
-    (uuid "00000000-0000-0000-0000-000000000021")
-    (at 10 35)
-    (property "Reference" "R1" (at 0 -1.5 0) (layer "F.SilkS") (effects (font (size 0.6 0.6) (thickness 0.12))))
-    (property "Value" "10K" (at 0 1.5 0) (layer "F.Fab") (effects (font (size 0.6 0.6) (thickness 0.12))))
-    (pad "1" smd roundrect (at -0.825 0) (size 0.8 0.95) (layers "F.Cu" "F.Paste" "F.Mask") (roundrect_rratio 0.25) (net 3 "+3.3V"))
-    (pad "2" smd roundrect (at 0.825 0) (size 0.8 0.95) (layers "F.Cu" "F.Paste" "F.Mask") (roundrect_rratio 0.25) (net 8 "BTN"))
-  )
-
-  ;; D2 - Power LED Green (0603)
-  (footprint "LED_SMD:LED_0603_1608Metric"
-    (layer "F.Cu")
-    (uuid "00000000-0000-0000-0000-000000000022")
-    (at 24 31.5 90)
-    (property "Reference" "D2" (at 0 -1.5 0) (layer "F.SilkS") (effects (font (size 0.6 0.6) (thickness 0.12))))
-    (property "Value" "Green" (at 0 1.5 0) (layer "F.Fab") (effects (font (size 0.6 0.6) (thickness 0.12))))
-    (pad "1" smd roundrect (at -0.75 0) (size 0.65 0.65) (layers "F.Cu" "F.Paste" "F.Mask") (roundrect_rratio 0.25))
-    (pad "2" smd roundrect (at 0.75 0) (size 0.65 0.65) (layers "F.Cu" "F.Paste" "F.Mask") (roundrect_rratio 0.25))
-  )
-
-  ;; R2 - LED resistor 1K (0603)
-  (footprint "Resistor_SMD:R_0603_1608Metric"
-    (layer "F.Cu")
-    (uuid "00000000-0000-0000-0000-000000000023")
-    (at 24 36 90)
-    (property "Reference" "R2" (at 0 -1.5 0) (layer "F.SilkS") (effects (font (size 0.6 0.6) (thickness 0.12))))
-    (property "Value" "1K" (at 0 1.5 0) (layer "F.Fab") (effects (font (size 0.6 0.6) (thickness 0.12))))
-    (pad "1" smd roundrect (at -0.825 0) (size 0.8 0.95) (layers "F.Cu" "F.Paste" "F.Mask") (roundrect_rratio 0.25) (net 3 "+3.3V"))
-    (pad "2" smd roundrect (at 0.825 0) (size 0.8 0.95) (layers "F.Cu" "F.Paste" "F.Mask") (roundrect_rratio 0.25))
-  )
-
-  ;; ============================================
-  ;; CONNECTORS
-  ;; ============================================
-
-  ;; J1 - Eurorack Power Header 2x5
-  (footprint "Connector_IDC:IDC-Header_2x05_P2.54mm_Vertical"
-    (layer "F.Cu")
-    (uuid "00000000-0000-0000-0000-000000000030")
-    (at 14 92)
-    (property "Reference" "J1" (at 0 -7 0) (layer "F.SilkS") (effects (font (size 1 1) (thickness 0.15))))
-    (property "Value" "Eurorack_2x5" (at 0 7 0) (layer "F.Fab") (effects (font (size 1 1) (thickness 0.15))))
-    (fp_line (start -6.35 -5.08) (end 6.35 -5.08) (stroke (width 0.12) (type solid)) (layer "F.SilkS"))
-    (fp_line (start 6.35 -5.08) (end 6.35 5.08) (stroke (width 0.12) (type solid)) (layer "F.SilkS"))
-    (fp_line (start 6.35 5.08) (end -6.35 5.08) (stroke (width 0.12) (type solid)) (layer "F.SilkS"))
-    (fp_line (start -6.35 5.08) (end -6.35 -5.08) (stroke (width 0.12) (type solid)) (layer "F.SilkS"))
-    ;; Row 1 (top)
-    (pad "1" thru_hole rect (at -5.08 -2.54) (size 1.7 1.7) (drill 1.0) (layers "*.Cu" "*.Mask") (net 1 "GND"))
-    (pad "2" thru_hole circle (at -5.08 2.54) (size 1.7 1.7) (drill 1.0) (layers "*.Cu" "*.Mask") (net 1 "GND"))
-    (pad "3" thru_hole circle (at -2.54 -2.54) (size 1.7 1.7) (drill 1.0) (layers "*.Cu" "*.Mask") (net 1 "GND"))
-    (pad "4" thru_hole circle (at -2.54 2.54) (size 1.7 1.7) (drill 1.0) (layers "*.Cu" "*.Mask") (net 2 "+12V"))
-    (pad "5" thru_hole circle (at 0 -2.54) (size 1.7 1.7) (drill 1.0) (layers "*.Cu" "*.Mask") (net 1 "GND"))
-    (pad "6" thru_hole circle (at 0 2.54) (size 1.7 1.7) (drill 1.0) (layers "*.Cu" "*.Mask") (net 2 "+12V"))
-    (pad "7" thru_hole circle (at 2.54 -2.54) (size 1.7 1.7) (drill 1.0) (layers "*.Cu" "*.Mask") (net 1 "GND"))
-    (pad "8" thru_hole circle (at 2.54 2.54) (size 1.7 1.7) (drill 1.0) (layers "*.Cu" "*.Mask"))
-    (pad "9" thru_hole circle (at 5.08 -2.54) (size 1.7 1.7) (drill 1.0) (layers "*.Cu" "*.Mask") (net 1 "GND"))
-    (pad "10" thru_hole circle (at 5.08 2.54) (size 1.7 1.7) (drill 1.0) (layers "*.Cu" "*.Mask"))
-  )
-
-  ;; J2 - Thonkiconn TRIG jack
-  (footprint "Connector_Audio:Jack_3.5mm_QingPu_WQP-PJ398SM_Vertical_CircularHoles"
-    (layer "F.Cu")
-    (uuid "00000000-0000-0000-0000-000000000031")
-    (at 7 83)
-    (property "Reference" "J2" (at 0 -6 0) (layer "F.SilkS") (effects (font (size 1 1) (thickness 0.15))))
-    (property "Value" "TRIG" (at 0 6 0) (layer "F.Fab") (effects (font (size 1 1) (thickness 0.15))))
-    (fp_circle (center 0 0) (end 4 0) (stroke (width 0.12) (type solid)) (fill none) (layer "F.SilkS"))
-    (pad "T" thru_hole circle (at 0 0) (size 2.8 2.8) (drill 2.0) (layers "*.Cu" "*.Mask") (net 9 "TRIG_BUF"))
-    (pad "S" thru_hole circle (at -3 3) (size 1.7 1.7) (drill 1.0) (layers "*.Cu" "*.Mask") (net 1 "GND"))
-    (pad "TN" thru_hole circle (at 3 3) (size 1.7 1.7) (drill 1.0) (layers "*.Cu" "*.Mask"))
-  )
-
-  ;; J3 - Thonkiconn RETURN jack
-  (footprint "Connector_Audio:Jack_3.5mm_QingPu_WQP-PJ398SM_Vertical_CircularHoles"
-    (layer "F.Cu")
-    (uuid "00000000-0000-0000-0000-000000000032")
-    (at 21 83)
-    (property "Reference" "J3" (at 0 -6 0) (layer "F.SilkS") (effects (font (size 1 1) (thickness 0.15))))
-    (property "Value" "RETURN" (at 0 6 0) (layer "F.Fab") (effects (font (size 1 1) (thickness 0.15))))
-    (fp_circle (center 0 0) (end 4 0) (stroke (width 0.12) (type solid)) (fill none) (layer "F.SilkS"))
-    (pad "T" thru_hole circle (at 0 0) (size 2.8 2.8) (drill 2.0) (layers "*.Cu" "*.Mask") (net 10 "RET_DIV"))
-    (pad "S" thru_hole circle (at -3 3) (size 1.7 1.7) (drill 1.0) (layers "*.Cu" "*.Mask") (net 1 "GND"))
-    (pad "TN" thru_hole circle (at 3 3) (size 1.7 1.7) (drill 1.0) (layers "*.Cu" "*.Mask"))
-  )
-
-  ;; ============================================
-  ;; POWER SECTION (Back side)
-  ;; ============================================
-
-  ;; D1 - SS14 Schottky diode (SMA)
-  (footprint "Diode_SMD:D_SMA"
-    (layer "B.Cu")
-    (uuid "00000000-0000-0000-0000-000000000040")
-    (at 7 65)
-    (property "Reference" "D1" (at 0 -2.5 0) (layer "B.SilkS") (effects (font (size 0.8 0.8) (thickness 0.15)) (justify mirror)))
-    (property "Value" "SS14" (at 0 2.5 0) (layer "B.Fab") (effects (font (size 0.8 0.8) (thickness 0.15)) (justify mirror)))
-    (pad "1" smd rect (at -2.1 0) (size 1.6 1.4) (layers "B.Cu" "B.Paste" "B.Mask") (net 2 "+12V"))
-    (pad "2" smd rect (at 2.1 0) (size 1.6 1.4) (layers "B.Cu" "B.Paste" "B.Mask"))
-  )
-
-  ;; U1 - AMS1117-3.3 LDO (SOT-223)
-  (footprint "Package_TO_SOT_SMD:SOT-223-3_TabPin2"
-    (layer "B.Cu")
-    (uuid "00000000-0000-0000-0000-000000000041")
-    (at 14 65)
-    (property "Reference" "U1" (at 0 -4 0) (layer "B.SilkS") (effects (font (size 0.8 0.8) (thickness 0.15)) (justify mirror)))
-    (property "Value" "AMS1117-3.3" (at 0 4 0) (layer "B.Fab") (effects (font (size 0.8 0.8) (thickness 0.15)) (justify mirror)))
-    (fp_line (start -3.4 -1.6) (end 3.4 -1.6) (stroke (width 0.12) (type solid)) (layer "B.SilkS"))
-    (fp_line (start 3.4 -1.6) (end 3.4 1.6) (stroke (width 0.12) (type solid)) (layer "B.SilkS"))
-    (fp_line (start 3.4 1.6) (end -3.4 1.6) (stroke (width 0.12) (type solid)) (layer "B.SilkS"))
-    (fp_line (start -3.4 1.6) (end -3.4 -1.6) (stroke (width 0.12) (type solid)) (layer "B.SilkS"))
-    (pad "1" smd rect (at -2.3 3.2) (size 1 1.5) (layers "B.Cu" "B.Paste" "B.Mask") (net 1 "GND"))
-    (pad "2" smd rect (at 0 3.2) (size 1 1.5) (layers "B.Cu" "B.Paste" "B.Mask") (net 3 "+3.3V"))
-    (pad "3" smd rect (at 2.3 3.2) (size 1 1.5) (layers "B.Cu" "B.Paste" "B.Mask"))
-    (pad "2" smd rect (at 0 -3.2) (size 3.5 2) (layers "B.Cu" "B.Paste" "B.Mask") (net 3 "+3.3V"))
-  )
-
-  ;; C1 - 10uF input cap (0805)
-  (footprint "Capacitor_SMD:C_0805_2012Metric"
-    (layer "F.Cu")
-    (uuid "00000000-0000-0000-0000-000000000042")
-    (at 10 60)
-    (property "Reference" "C1" (at 0 -1.5 0) (layer "F.SilkS") (effects (font (size 0.6 0.6) (thickness 0.12))))
-    (property "Value" "10uF" (at 0 1.5 0) (layer "F.Fab") (effects (font (size 0.6 0.6) (thickness 0.12))))
-    (pad "1" smd roundrect (at -1 0) (size 1 1.45) (layers "F.Cu" "F.Paste" "F.Mask") (roundrect_rratio 0.25))
-    (pad "2" smd roundrect (at 1 0) (size 1 1.45) (layers "F.Cu" "F.Paste" "F.Mask") (roundrect_rratio 0.25) (net 1 "GND"))
-  )
-
-  ;; C2 - 10uF output cap (0805)
-  (footprint "Capacitor_SMD:C_0805_2012Metric"
-    (layer "F.Cu")
-    (uuid "00000000-0000-0000-0000-000000000043")
-    (at 18 60)
-    (property "Reference" "C2" (at 0 -1.5 0) (layer "F.SilkS") (effects (font (size 0.6 0.6) (thickness 0.12))))
-    (property "Value" "10uF" (at 0 1.5 0) (layer "F.Fab") (effects (font (size 0.6 0.6) (thickness 0.12))))
-    (pad "1" smd roundrect (at -1 0) (size 1 1.45) (layers "F.Cu" "F.Paste" "F.Mask") (roundrect_rratio 0.25) (net 3 "+3.3V"))
-    (pad "2" smd roundrect (at 1 0) (size 1 1.45) (layers "F.Cu" "F.Paste" "F.Mask") (roundrect_rratio 0.25) (net 1 "GND"))
-  )
-
-  ;; C3 - 100nF output cap (0603)
-  (footprint "Capacitor_SMD:C_0603_1608Metric"
-    (layer "F.Cu")
-    (uuid "00000000-0000-0000-0000-000000000044")
-    (at 21 60)
-    (property "Reference" "C3" (at 0 -1.5 0) (layer "F.SilkS") (effects (font (size 0.6 0.6) (thickness 0.12))))
-    (property "Value" "100nF" (at 0 1.5 0) (layer "F.Fab") (effects (font (size 0.6 0.6) (thickness 0.12))))
-    (pad "1" smd roundrect (at -0.775 0) (size 0.9 0.95) (layers "F.Cu" "F.Paste" "F.Mask") (roundrect_rratio 0.25) (net 3 "+3.3V"))
-    (pad "2" smd roundrect (at 0.775 0) (size 0.9 0.95) (layers "F.Cu" "F.Paste" "F.Mask") (roundrect_rratio 0.25) (net 1 "GND"))
-  )
-
-  ;; ============================================
-  ;; TRIGGER OUTPUT CIRCUIT
-  ;; ============================================
-
-  ;; U2 - 74LVC1G17 Schmitt trigger (SOT-23-5)
-  (footprint "Package_TO_SOT_SMD:SOT-23-5"
-    (layer "F.Cu")
-    (uuid "00000000-0000-0000-0000-000000000050")
-    (at 7 72)
-    (property "Reference" "U2" (at 0 -2.5 0) (layer "F.SilkS") (effects (font (size 0.6 0.6) (thickness 0.12))))
-    (property "Value" "74LVC1G17" (at 0 2.5 0) (layer "F.Fab") (effects (font (size 0.6 0.6) (thickness 0.12))))
-    (pad "1" smd rect (at -1.1 0.95) (size 0.6 1.1) (layers "F.Cu" "F.Paste" "F.Mask") (net 6 "TRIG_OUT"))
-    (pad "2" smd rect (at -1.1 -0.95) (size 0.6 1.1) (layers "F.Cu" "F.Paste" "F.Mask") (net 1 "GND"))
-    (pad "3" smd rect (at 1.1 -0.95) (size 0.6 1.1) (layers "F.Cu" "F.Paste" "F.Mask"))
-    (pad "4" smd rect (at 1.1 0) (size 0.6 1.1) (layers "F.Cu" "F.Paste" "F.Mask") (net 9 "TRIG_BUF"))
-    (pad "5" smd rect (at 1.1 0.95) (size 0.6 1.1) (layers "F.Cu" "F.Paste" "F.Mask") (net 3 "+3.3V"))
-  )
-
-  ;; C4 - 100nF decoupling for U2 (0603)
-  (footprint "Capacitor_SMD:C_0603_1608Metric"
-    (layer "F.Cu")
-    (uuid "00000000-0000-0000-0000-000000000051")
-    (at 7 68)
-    (property "Reference" "C4" (at 0 -1.5 0) (layer "F.SilkS") (effects (font (size 0.6 0.6) (thickness 0.12))))
-    (property "Value" "100nF" (at 0 1.5 0) (layer "F.Fab") (effects (font (size 0.6 0.6) (thickness 0.12))))
-    (pad "1" smd roundrect (at -0.775 0) (size 0.9 0.95) (layers "F.Cu" "F.Paste" "F.Mask") (roundrect_rratio 0.25) (net 3 "+3.3V"))
-    (pad "2" smd roundrect (at 0.775 0) (size 0.9 0.95) (layers "F.Cu" "F.Paste" "F.Mask") (roundrect_rratio 0.25) (net 1 "GND"))
-  )
-
-  ;; R3 - 100R trigger series resistor (0603)
-  (footprint "Resistor_SMD:R_0603_1608Metric"
-    (layer "F.Cu")
-    (uuid "00000000-0000-0000-0000-000000000052")
-    (at 7 76 90)
-    (property "Reference" "R3" (at 0 -1.5 0) (layer "F.SilkS") (effects (font (size 0.6 0.6) (thickness 0.12))))
-    (property "Value" "100R" (at 0 1.5 0) (layer "F.Fab") (effects (font (size 0.6 0.6) (thickness 0.12))))
-    (pad "1" smd roundrect (at -0.825 0) (size 0.8 0.95) (layers "F.Cu" "F.Paste" "F.Mask") (roundrect_rratio 0.25) (net 9 "TRIG_BUF"))
-    (pad "2" smd roundrect (at 0.825 0) (size 0.8 0.95) (layers "F.Cu" "F.Paste" "F.Mask") (roundrect_rratio 0.25))
-  )
-
-  ;; ============================================
-  ;; RETURN INPUT CIRCUIT
-  ;; ============================================
-
-  ;; U3 - MCP6001 op-amp (SOT-23-5)
-  (footprint "Package_TO_SOT_SMD:SOT-23-5"
-    (layer "F.Cu")
-    (uuid "00000000-0000-0000-0000-000000000060")
-    (at 21 72)
-    (property "Reference" "U3" (at 0 -2.5 0) (layer "F.SilkS") (effects (font (size 0.6 0.6) (thickness 0.12))))
-    (property "Value" "MCP6001" (at 0 2.5 0) (layer "F.Fab") (effects (font (size 0.6 0.6) (thickness 0.12))))
-    (pad "1" smd rect (at -1.1 0.95) (size 0.6 1.1) (layers "F.Cu" "F.Paste" "F.Mask") (net 11 "RET_BUF"))
-    (pad "2" smd rect (at -1.1 -0.95) (size 0.6 1.1) (layers "F.Cu" "F.Paste" "F.Mask") (net 1 "GND"))
-    (pad "3" smd rect (at 1.1 -0.95) (size 0.6 1.1) (layers "F.Cu" "F.Paste" "F.Mask") (net 11 "RET_BUF"))
-    (pad "4" smd rect (at 1.1 0) (size 0.6 1.1) (layers "F.Cu" "F.Paste" "F.Mask") (net 10 "RET_DIV"))
-    (pad "5" smd rect (at 1.1 0.95) (size 0.6 1.1) (layers "F.Cu" "F.Paste" "F.Mask") (net 3 "+3.3V"))
-  )
-
-  ;; C5 - 100nF decoupling for U3 (0603)
-  (footprint "Capacitor_SMD:C_0603_1608Metric"
-    (layer "F.Cu")
-    (uuid "00000000-0000-0000-0000-000000000061")
-    (at 21 68)
-    (property "Reference" "C5" (at 0 -1.5 0) (layer "F.SilkS") (effects (font (size 0.6 0.6) (thickness 0.12))))
-    (property "Value" "100nF" (at 0 1.5 0) (layer "F.Fab") (effects (font (size 0.6 0.6) (thickness 0.12))))
-    (pad "1" smd roundrect (at -0.775 0) (size 0.9 0.95) (layers "F.Cu" "F.Paste" "F.Mask") (roundrect_rratio 0.25) (net 3 "+3.3V"))
-    (pad "2" smd roundrect (at 0.775 0) (size 0.9 0.95) (layers "F.Cu" "F.Paste" "F.Mask") (roundrect_rratio 0.25) (net 1 "GND"))
-  )
-
-  ;; R4 - 10K input resistor (0603)
-  (footprint "Resistor_SMD:R_0603_1608Metric"
-    (layer "F.Cu")
-    (uuid "00000000-0000-0000-0000-000000000062")
-    (at 21 76 90)
-    (property "Reference" "R4" (at 0 -1.5 0) (layer "F.SilkS") (effects (font (size 0.6 0.6) (thickness 0.12))))
-    (property "Value" "10K" (at 0 1.5 0) (layer "F.Fab") (effects (font (size 0.6 0.6) (thickness 0.12))))
-    (pad "1" smd roundrect (at -0.825 0) (size 0.8 0.95) (layers "F.Cu" "F.Paste" "F.Mask") (roundrect_rratio 0.25) (net 10 "RET_DIV"))
-    (pad "2" smd roundrect (at 0.825 0) (size 0.8 0.95) (layers "F.Cu" "F.Paste" "F.Mask") (roundrect_rratio 0.25))
-  )
-
-  ;; R5 - 10K voltage divider top (0603)
-  (footprint "Resistor_SMD:R_0603_1608Metric"
-    (layer "F.Cu")
-    (uuid "00000000-0000-0000-0000-000000000063")
-    (at 18 76 90)
-    (property "Reference" "R5" (at 0 -1.5 0) (layer "F.SilkS") (effects (font (size 0.6 0.6) (thickness 0.12))))
-    (property "Value" "10K" (at 0 1.5 0) (layer "F.Fab") (effects (font (size 0.6 0.6) (thickness 0.12))))
-    (pad "1" smd roundrect (at -0.825 0) (size 0.8 0.95) (layers "F.Cu" "F.Paste" "F.Mask") (roundrect_rratio 0.25))
-    (pad "2" smd roundrect (at 0.825 0) (size 0.8 0.95) (layers "F.Cu" "F.Paste" "F.Mask") (roundrect_rratio 0.25) (net 10 "RET_DIV"))
-  )
-
-  ;; R6 - 22K voltage divider bottom (0603)
-  (footprint "Resistor_SMD:R_0603_1608Metric"
-    (layer "F.Cu")
-    (uuid "00000000-0000-0000-0000-000000000064")
-    (at 18 72 90)
-    (property "Reference" "R6" (at 0 -1.5 0) (layer "F.SilkS") (effects (font (size 0.6 0.6) (thickness 0.12))))
-    (property "Value" "22K" (at 0 1.5 0) (layer "F.Fab") (effects (font (size 0.6 0.6) (thickness 0.12))))
-    (pad "1" smd roundrect (at -0.825 0) (size 0.8 0.95) (layers "F.Cu" "F.Paste" "F.Mask") (roundrect_rratio 0.25) (net 10 "RET_DIV"))
-    (pad "2" smd roundrect (at 0.825 0) (size 0.8 0.95) (layers "F.Cu" "F.Paste" "F.Mask") (roundrect_rratio 0.25) (net 1 "GND"))
-  )
-
-  ;; D3 - BAT54 clamp diode to GND (SOD-323)
-  (footprint "Diode_SMD:D_SOD-323"
-    (layer "F.Cu")
-    (uuid "00000000-0000-0000-0000-000000000065")
-    (at 24 70 90)
-    (property "Reference" "D3" (at 0 -1.5 0) (layer "F.SilkS") (effects (font (size 0.6 0.6) (thickness 0.12))))
-    (property "Value" "BAT54" (at 0 1.5 0) (layer "F.Fab") (effects (font (size 0.6 0.6) (thickness 0.12))))
-    (pad "1" smd rect (at -1.15 0) (size 0.6 0.6) (layers "F.Cu" "F.Paste" "F.Mask") (net 10 "RET_DIV"))
-    (pad "2" smd rect (at 1.15 0) (size 0.6 0.6) (layers "F.Cu" "F.Paste" "F.Mask") (net 1 "GND"))
-  )
-
-  ;; D4 - BAT54 clamp diode to 3.3V (SOD-323)
-  (footprint "Diode_SMD:D_SOD-323"
-    (layer "F.Cu")
-    (uuid "00000000-0000-0000-0000-000000000066")
-    (at 24 74 90)
-    (property "Reference" "D4" (at 0 -1.5 0) (layer "F.SilkS") (effects (font (size 0.6 0.6) (thickness 0.12))))
-    (property "Value" "BAT54" (at 0 1.5 0) (layer "F.Fab") (effects (font (size 0.6 0.6) (thickness 0.12))))
-    (pad "1" smd rect (at -1.15 0) (size 0.6 0.6) (layers "F.Cu" "F.Paste" "F.Mask") (net 3 "+3.3V"))
-    (pad "2" smd rect (at 1.15 0) (size 0.6 0.6) (layers "F.Cu" "F.Paste" "F.Mask") (net 10 "RET_DIV"))
-  )
-
-  ;; ============================================
-  ;; SILKSCREEN LABELS
-  ;; ============================================
-
   (gr_text "SN-L00 v0.1"
-    (at 14 98 0)
+    (at 14 98)
     (layer "F.SilkS")
-    (uuid "title-text")
-    (effects (font (size 1.2 1.2) (thickness 0.2)) (justify center))
-  )
-
-  (gr_text "SubModular"
-    (at 14 2 0)
-    (layer "F.SilkS")
-    (uuid "company-text")
-    (effects (font (size 0.8 0.8) (thickness 0.15)) (justify center))
-  )
-
-  (gr_text "TRIG"
-    (at 7 77 0)
-    (layer "F.SilkS")
-    (uuid "trig-label")
-    (effects (font (size 0.8 0.8) (thickness 0.15)) (justify center))
-  )
-
-  (gr_text "RETURN"
-    (at 21 77 0)
-    (layer "F.SilkS")
-    (uuid "return-label")
-    (effects (font (size 0.8 0.8) (thickness 0.15)) (justify center))
-  )
-
-  (gr_text "SN-L00"
-    (at 14 50 0)
-    (layer "B.SilkS")
-    (uuid "back-title")
-    (effects (font (size 1.5 1.5) (thickness 0.2)) (justify center mirror))
-  )
-
-  (gr_text "git.sub-net.at/submodular/SN-L00"
-    (at 14 55 0)
-    (layer "B.SilkS")
-    (uuid "back-url")
-    (effects (font (size 0.6 0.6) (thickness 0.12)) (justify center mirror))
-  )
-
-  ;; ============================================
-  ;; GROUND ZONE (Back copper)
-  ;; ============================================
-
-  (zone
-    (net 1)
-    (net_name "GND")
-    (layer "B.Cu")
-    (uuid "gnd-zone-back")
-    (hatch edge 0.5)
-    (connect_pads (clearance 0.3))
-    (min_thickness 0.25)
-    (fill yes (thermal_gap 0.5) (thermal_bridge_width 0.5))
-    (polygon
-      (pts
-        (xy 0 0)
-        (xy 28 0)
-        (xy 28 100)
-        (xy 0 100)
-      )
+    (uuid "a1b2c3d4-e5f6-7890-abcd-ef1234567891")
+    (effects
+      (font (size 1.2 1.2) (thickness 0.2))
     )
   )
 
-  ;; ============================================
-  ;; GROUND ZONE (Front copper - partial)
-  ;; ============================================
+  (gr_text "SubModular"
+    (at 14 2)
+    (layer "F.SilkS")
+    (uuid "a1b2c3d4-e5f6-7890-abcd-ef1234567892")
+    (effects
+      (font (size 0.8 0.8) (thickness 0.15))
+    )
+  )
 
-  (zone
-    (net 1)
-    (net_name "GND")
-    (layer "F.Cu")
-    (uuid "gnd-zone-front")
-    (hatch edge 0.5)
-    (connect_pads (clearance 0.3))
-    (min_thickness 0.25)
-    (fill yes (thermal_gap 0.5) (thermal_bridge_width 0.5))
-    (polygon
-      (pts
-        (xy 0 0)
-        (xy 28 0)
-        (xy 28 100)
-        (xy 0 100)
-      )
+  (gr_text "TRIG"
+    (at 7 77)
+    (layer "F.SilkS")
+    (uuid "a1b2c3d4-e5f6-7890-abcd-ef1234567893")
+    (effects
+      (font (size 0.8 0.8) (thickness 0.15))
+    )
+  )
+
+  (gr_text "RETURN"
+    (at 21 77)
+    (layer "F.SilkS")
+    (uuid "a1b2c3d4-e5f6-7890-abcd-ef1234567894")
+    (effects
+      (font (size 0.8 0.8) (thickness 0.15))
     )
   )
 
diff --git a/hardware/kicad/scripts/place_components.py b/hardware/kicad/scripts/place_components.py
new file mode 100644
index 0000000..8e24c82
--- /dev/null
+++ b/hardware/kicad/scripts/place_components.py
@@ -0,0 +1,124 @@
+#!/usr/bin/env python3
+"""
+KiCad PCB Component Placement Script for SN-L00
+
+Run this script in KiCad's Scripting Console (Tools > Scripting Console)
+after running "Update PCB from Schematic" to place all components.
+
+Usage in KiCad scripting console:
+    exec(open('/path/to/place_components.py').read())
+"""
+
+import pcbnew
+
+# Component placement coordinates (mm) based on CPL_PCBWay.csv
+# Format: {Reference: (x, y, rotation, layer)}
+# Layer: "F.Cu" for top, "B.Cu" for bottom
+
+PLACEMENTS = {
+    # Capacitors
+    "C1": (10.0, 60.0, 0, "F.Cu"),
+    "C2": (18.0, 60.0, 0, "F.Cu"),
+    "C3": (21.0, 60.0, 0, "F.Cu"),
+    "C4": (7.0, 68.0, 0, "F.Cu"),
+    "C5": (21.0, 68.0, 0, "F.Cu"),
+
+    # Resistors
+    "R1": (10.0, 35.0, 0, "F.Cu"),
+    "R2": (24.0, 36.0, 90, "F.Cu"),
+    "R3": (7.0, 76.0, 90, "F.Cu"),
+    "R4": (21.0, 76.0, 90, "F.Cu"),
+    "R5": (18.0, 76.0, 90, "F.Cu"),
+    "R6": (18.0, 72.0, 90, "F.Cu"),
+
+    # Diodes
+    "D1": (7.0, 65.0, 0, "B.Cu"),  # Bottom layer
+    "D2": (24.0, 31.5, 90, "F.Cu"),
+    "D3": (24.0, 70.0, 90, "F.Cu"),
+    "D4": (24.0, 74.0, 90, "F.Cu"),
+
+    # ICs
+    "U1": (14.0, 65.0, 0, "B.Cu"),  # LDO on bottom
+    "U2": (7.0, 72.0, 0, "F.Cu"),   # Schmitt trigger
+    "U3": (21.0, 72.0, 0, "F.Cu"),  # Op-amp
+
+    # Connectors
+    "J1": (14.0, 92.0, 0, "F.Cu"),  # Power header
+    "J2": (7.0, 83.0, 0, "F.Cu"),   # TRIG jack
+    "J3": (21.0, 83.0, 0, "F.Cu"),  # RETURN jack
+
+    # Switch
+    "SW1": (14.0, 31.5, 0, "F.Cu"),
+
+    # Modules (hand-solder, placement reference only)
+    "MOD1": (14.0, 46.5, 0, "F.Cu"),  # RP2040-Zero
+    "MOD2": (14.0, 17.5, 0, "F.Cu"),  # OLED
+}
+
+def place_components():
+    """Place all components according to the PLACEMENTS dictionary."""
+    board = pcbnew.GetBoard()
+
+    if not board:
+        print("Error: No board loaded!")
+        return
+
+    placed = 0
+    not_found = []
+
+    for ref, (x, y, rotation, layer) in PLACEMENTS.items():
+        # Find the footprint by reference
+        fp = board.FindFootprintByReference(ref)
+
+        if fp is None:
+            not_found.append(ref)
+            continue
+
+        # Convert mm to internal units (nanometers)
+        pos = pcbnew.VECTOR2I(pcbnew.FromMM(x), pcbnew.FromMM(y))
+        fp.SetPosition(pos)
+
+        # Set rotation (in tenths of degrees)
+        fp.SetOrientationDegrees(rotation)
+
+        # Set layer (flip if on bottom)
+        if layer == "B.Cu" and fp.GetLayer() == pcbnew.F_Cu:
+            fp.Flip(pos, False)
+        elif layer == "F.Cu" and fp.GetLayer() == pcbnew.B_Cu:
+            fp.Flip(pos, False)
+
+        placed += 1
+        print(f"Placed {ref} at ({x}, {y}) rot={rotation}° on {layer}")
+
+    if not_found:
+        print(f"\nNot found (run 'Update PCB from Schematic' first): {not_found}")
+
+    print(f"\nPlaced {placed}/{len(PLACEMENTS)} components")
+
+    # Refresh the board view
+    pcbnew.Refresh()
+
+
+def add_mounting_holes():
+    """Add M3 mounting holes at standard Eurorack positions."""
+    board = pcbnew.GetBoard()
+
+    # Check if mounting holes already exist
+    for fp in board.GetFootprints():
+        if "MountingHole" in fp.GetValue():
+            print("Mounting holes already exist, skipping...")
+            return
+
+    # Would need to load footprint from library - simplified for this script
+    print("Add mounting holes manually:")
+    print("  MH1: (14, 5) - Top")
+    print("  MH2: (14, 95) - Bottom")
+    print("  Footprint: MountingHole:MountingHole_3.2mm_M3")
+
+
+if __name__ == "__main__":
+    print("SN-L00 Component Placement Script")
+    print("=" * 40)
+    place_components()
+    add_mounting_holes()
+    print("\nDone! Run DRC and then route traces.")