CANBUS


Work done
  • Rechecked production blockers and confirmed the board is still blocked by routing/copper issues.
  • Cleaned up physical placement for manufacturability: connectors remain edge-accessible and the CAN, RS485, STM32, SWD/reset, and motor sections are separated across the 160 × 150 mm 4-layer board.
  • Confirmed the previous SW_RST1 metadata blocker is resolved with Omron B3F-1000; no queried missing-footprint or missing-MPN blockers remain.
  • Updated the DRC/ERC Remediation Log with the latest status and required cleanup path.
Success criteria review
  • ❌ All DRC/ERC issues resolved: not yet — 59 airwire errors and 141 overlapping-copper errors remain.
  • ❌ PCB routing/copper cleanup complete: not yet — stale copper groups around Trace 3c95 / Trace ad2c still need deletion or rerouting.
  • ✅ Manufacturing metadata/footprints validated for queried blockers: no missing-MPN or missing-footprint errors were reported.
  • ❌ Production exports generated: blocked intentionally because unresolved airwires and copper overlaps would make the files unsafe for fabrication.
Next steps
Use the PCB editor cleanup/routing workflow to remove or regenerate the stale 3c95... and ad2c... copper groups, then rerun checks. Once airwires and copper overlaps are zero, Gerber, BOM, pick-and-place, and optional STEP/netlist exports can be generated.
stm32f446re mikroişlemcisini kullandın mı
Hayır, şu an tasarımda STM32F446RE mikroişlemcisinin kendisi ayrı bir IC olarak kullanılmamış görünüyor.
Mevcut şemada yapılan yapı şu şekilde:
  • STM32F446RE için header/konnektör bağlantıları var (J_STM32A, J_STM32B)
  • CAN, RS485, STEP/DIR/ENABLE, SWD ve reset sinyalleri bu header’lara bağlanmış
  • Yani tasarım, STM32F446RE kartı/modülü dışarıdan takılacakmış gibi hazırlanmış
Ama PCB üzerinde doğrudan:
  • STM32F446RE MCU paketi
  • Kristal/osilatör
  • BOOT pin devresi
  • VCAP kapasitörleri
  • Tüm VDD/VDDA/VSS pin bağlantıları
gibi gerçek STM32F446RE minimum sistem devresi yok.
Eğer hedefin tamamen standalone PCB üzerinde STM32F446RE çipi olsun ise, mevcut header tabanlı tasarımı değiştirmemiz gerekir: STM32F446RE MCU’yu doğrudan ekleyip güç, clock, boot, reset, SWD ve tüm gerekli decoupling devrelerini tamamlamalıyız.
MCU ekle
Header uyumluluğu
Datasheet kontrolü
Standalone kart

U_RS485A
U_REG1
U_RS485B
C3
Capacitance
100 nF
C9
Capacitance
100 nF
C_REGOUT1
Capacitance
10 uF
C10
Capacitance
100 nF
C_BULK1
Capacitance
47 uF
C4
Capacitance
100 nF
C6
Capacitance
100 nF
C8
Capacitance
100 nF
C5
Capacitance
100 nF
C7
Capacitance
100 nF
J_STM32B
J_MOTOR
J_STM32A
R_TERM1
Resistance
120 ohms
J_PWR_CAN
R_NRST1
Resistance
10 kOhms
J_RS485
J_SWD1
SW_RST1
D_CAN1
U_LS1
U_CAN1
STM32 CAN Stepper Controller thumbnail