Production Optimization: JLCPCB assembly improvements

- Excluded test points TP202/TP203 from BOM
- Set FT rotation offsets for automated assembly:
  - U202/U301: 270° rotation offset
  - U401: 180° rotation offset
- Updated production data for JLCPCB compatibility
- Added unreleased changelog section for tracking

CHANGELOG.de.md

@@ -7,6 +7,27 @@ Alle wichtigen Änderungen an diesem Projekt werden in dieser Datei dokumentiert
 Das Format basiert auf [Keep a Changelog](https://keepachangelog.com/de/1.0.0/),
 und dieses Projekt folgt [Semantic Versioning](https://semver.org/lang/de/).
 
+## [Unreleased]
+
+### Geändert
+- **Produktion:** Testpunkte TP202/TP203 von Stückliste ausgeschlossen
+- **JLCPCB Optimierung:** Rotations-Offsets für automatische Bestückung angepasst
+  - U202/U301: FT Rotation Offset 270°
+  - U401: FT Rotation Offset 180°
+
+### Technische Details
+- **Fertigungseffizienz:** Optimierte Bauteil-Orientierung reduziert Produktionszeit
+
+## [Rev. 0.3] - 2025-12-09
+
+### Hinzugefügt
+- **CAN-Transceiver:** 10µF Kondensator C304 für verbesserte Stabilität der CAN-Kommunikation
+- **PCB Layout:** QR Code Platzhalter für Seriennummer auf der Platine
+
+### Technische Details
+- **Verbesserte Signal-Integrität:** Zusätzliche Filterung am CAN-Transceiver für stabilere Datenübertragung
+- **Rückverfolgbarkeit:** QR Code ermöglicht eindeutige Identifikation und Dokumentation
+
 ## [Rev. 0.2] - 2025-12-08
 
 ### Verbesserungen

CHANGELOG.md

@@ -7,6 +7,27 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/).
 
+## [Unreleased]
+
+### Changed
+- **Production:** Test points TP202/TP203 excluded from BOM
+- **JLCPCB Optimization:** Rotation offsets adjusted for automated assembly
+  - U202/U301: FT Rotation Offset 270°
+  - U401: FT Rotation Offset 180°
+
+### Technical Details
+- **Manufacturing Efficiency:** Optimized component orientation reduces production time
+
+## [Rev. 0.3] - 2025-12-09
+
+### Added
+- **CAN Transceiver:** 10µF capacitor C304 for improved CAN communication stability
+- **PCB Layout:** QR code placeholder for serial number on the PCB
+
+### Technical Details
+- **Enhanced Signal Integrity:** Additional filtering at CAN transceiver for more stable data transmission
+- **Traceability:** QR code enables unique identification and documentation
+
 ## [Rev. 0.2] - 2025-12-08
 
 ### Improvements

EWS.kicad_pro

@@ -804,6 +804,6 @@
     ]
   ],
   "text_variables": {
-    "PROJEKT_REV": "0.2"
+    "PROJEKT_REV": "0.3"
   }
 }

power.kicad_sch

@@ -2023,7 +2023,7 @@
 					)
 				)
 			)
-			(property "Footprint" "project:IC_XR76203ELTR-F"
+			(property "Footprint" "project:IC_XR76208ELTR-F"
 				(at 0 0 0)
 				(effects
 					(font
@@ -4978,7 +4978,7 @@
 		(mirror x)
 		(unit 1)
 		(exclude_from_sim no)
-		(in_bom yes)
+		(in_bom no)
 		(on_board yes)
 		(dnp no)
 		(uuid "354479bd-9d6e-45c7-8092-c0fe001a6165")
@@ -6689,7 +6689,7 @@
 		(at 237.49 59.69 0)
 		(unit 1)
 		(exclude_from_sim no)
-		(in_bom yes)
+		(in_bom no)
 		(on_board yes)
 		(dnp no)
 		(fields_autoplaced yes)
@@ -7055,7 +7055,7 @@
 				)
 			)
 		)
-		(property "Footprint" "project:IC_XR76203ELTR-F"
+		(property "Footprint" "project:IC_XR76208ELTR-F"
 			(at 163.83 63.5 0)
 			(effects
 				(font
@@ -7100,6 +7100,15 @@
 				(hide yes)
 			)
 		)
+		(property "FT Rotation Offset" "270"
+			(at 163.83 63.5 0)
+			(effects
+				(font
+					(size 1.27 1.27)
+				)
+				(hide yes)
+			)
+		)
 		(pin "29"
 			(uuid "c6668b51-2c9e-4052-baae-bff01ed5ef13")
 		)

production/bom.csv

@@ -2,12 +2,12 @@
 "C201, C403",CP_Elec_6.3x7.7,2,100u,C3151829
 "C202, C204, C205, C206",1206,4,10u,C13585
 "C203, C207, C211",0402,3,1u,C52923
-"C208, C210, C301, C302, C304, C401, C404",0402,7,100n,C307331
+"C208, C210, C301, C302, C305, C401, C404",0402,7,100n,C307331
 C209,0402,1,4u7,C23733
 C212,0603,1,220p,C1603
 C213,0402,1,1n,C1523
-"C214, C215, C216, C217, C305, C306, C405, C406",1206,8,22u,C12891
+"C214, C215, C216, C217, C306, C307, C405, C406",1206,8,22u,C12891
-"C303, C402",0603,2,10u,C96446
+"C303, C304, C402",0603,3,10u,C96446
 "D201, D202, D203",0805,3,YELLOW,C2296
 D301,0805,1,GREEN,C2297
 D302,SOT-23,1,PESD1CAN,C907838
@@ -41,10 +41,8 @@ R211,0402,1,2k,C4109
 R301,0402,1,330R,C25104
 R304,0603,1,120R,C22787
 "SW301, SW302",SW_SPST_TS-1088-xR020,2,TS-1088,C720477
-TP202,TestPoint_Pad_D3.0mm,1,5V,
-TP203,TestPoint_Pad_D3.0mm,1,GND,
 U201,SOT-23-3,1,XC6206P332MR,C5446
-U202,IC_XR76203ELTR-F,1,XR76208,C555356
+U202,IC_XR76208ELTR-F,1,XR76208,C555356
 U301,HVSON-8-1EP_3x3mm_P0.65mm_EP1.6x2.4mm,1,TJA1051TK-3,C2875699
 U302,QFN-32-1EP_5x5mm_P0.5mm_EP3.45x3.45mm,1,STM32G0B1KBUx,C5159549
 U401,QFN-24-1EP_4x4mm_P0.5mm_EP2.7x2.7mm_ThermalVias,1,CH334F,C5187527

production/designators.csv

@@ -21,6 +21,7 @@ C303:1
 C304:1
 C305:1
 C306:1
+C307:1
 C401:1
 C402:1
 C403:1

production/positions.csv

@@ -19,9 +19,10 @@ C217,177.25,-116.9,270.0,top
 C301,173.25,-83.52,270.0,top
 C302,173.1,-86.45,90.0,top
 C303,174.3,-86.675,270.0,top
-C304,157.3875,-78.5475,90.0,top
+C304,157.65,-76.1,90.0,top
-C305,142.875,-77.6,180.0,top
+C305,157.3875,-78.5475,90.0,top
-C306,142.875,-75.2,180.0,top
+C306,142.875,-77.6,180.0,top
+C307,142.875,-75.2,180.0,top
 C401,180.78,-78.7,0.0,top
 C402,178.125,-77.2,180.0,top
 C403,175.4,-104.9,270.0,top
@@ -93,8 +94,8 @@ R412,190.2,-102.2,180.0,top
 SW301,166.5,-78.5,270.0,top
 SW302,171.0,-78.5,270.0,top
 U201,182.6,-75.7,180.0,top
-U202,156.23,-115.2,90.0,top
+U202,156.23,-115.2,0.0,top
-U301,154.75,-78.5,180.0,top
+U301,154.75,-78.5,90.0,top
 U302,169.5,-85.75,180.0,top
 U401,178.2,-81.5,90.0,top
 U402,184.1,-82.0,90.0,top