From 92ac59d905d76883f01c554da1785dc4f39aa2e9 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Vlastimil=20Slint=C3=A1k?= <slintak@uart.cz>
Date: Sun, 13 Jul 2025 22:05:01 +0200
Subject: [PATCH] Changed PCB stackup from 2 to 4 layers

---
 linht-hw.kicad_pcb | 65 +++++++++++++++++++++++++++++++++++++++++++++-
 linht-hw.kicad_prl |  6 ++++-
 2 files changed, 69 insertions(+), 2 deletions(-)

diff --git a/linht-hw.kicad_pcb b/linht-hw.kicad_pcb
index 40d45ef..1004433 100644
--- a/linht-hw.kicad_pcb
+++ b/linht-hw.kicad_pcb
@@ -9,6 +9,8 @@
 	(paper "A4")
 	(layers
 		(0 "F.Cu" signal)
+		(4 "In1.Cu" signal)
+		(6 "In2.Cu" signal)
 		(2 "B.Cu" signal)
 		(9 "F.Adhes" user "F.Adhesive")
 		(11 "B.Adhes" user "B.Adhesive")
@@ -34,6 +36,67 @@
 		(45 "User.4" 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 "prepreg")
+				(thickness 0.1)
+				(material "FR4")
+				(epsilon_r 4.5)
+				(loss_tangent 0.02)
+			)
+			(layer "In1.Cu"
+				(type "copper")
+				(thickness 0.035)
+			)
+			(layer "dielectric 2"
+				(type "core")
+				(thickness 1.24)
+				(material "FR4")
+				(epsilon_r 4.5)
+				(loss_tangent 0.02)
+			)
+			(layer "In2.Cu"
+				(type "copper")
+				(thickness 0.035)
+			)
+			(layer "dielectric 3"
+				(type "prepreg")
+				(thickness 0.1)
+				(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")
+				(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)
 		(allow_soldermask_bridges_in_footprints no)
 		(tenting front back)
@@ -200145,7 +200208,7 @@
 			(extension_offset 0.5)
 			(keep_text_aligned yes)
 		)
-		(gr_text "45,5"
+		(gr_text "45.5"
 			(at 122.75 153.85 0)
 			(layer "User.1")
 			(uuid "304f2af6-c48a-4d09-9874-a225aa208bd4")
diff --git a/linht-hw.kicad_prl b/linht-hw.kicad_prl
index 340f961..91ee29a 100644
--- a/linht-hw.kicad_prl
+++ b/linht-hw.kicad_prl
@@ -72,6 +72,8 @@
       false,
       false,
       false,
+      false,
+      false,
       false
     ],
     "col_order": [
@@ -84,7 +86,9 @@
       6,
       7,
       8,
-      9
+      9,
+      10,
+      11
     ],
     "col_widths": [
       162,