STM32F411 Footprint Design

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Work completed
  • Fully populated the schematic with all major subsystems: STM32 BlackPill module, 24 V→3.3 V buck converter, reverse-polarity Schottky diode, ULN2803A driver, CAN transceiver, Schmitt trigger buffer, TVS protection diodes, resistor-divider networks, decoupling capacitors, test-point terminals, and all I/O connectors.
  • Made net connections for power rails, digital inputs (divider→TVS→Schmitt→MCU), digital outputs (MCU→ULN2803A→flyback diodes→load), and CAN termination resistor.
  • Performed schematic reviews—added missing decoupling caps and pull-resistors, upgraded resistor and capacitor ratings—and resolved all flagged air-wires.
  • Assigned production-grade footprints (0805/1206 for passives), added mounting holes near corners, and placed connectors and test points at board edges.
Tasks I couldn’t do
  • Wiring the SWD header pins (SWDIO, SWCLK, NRST) to the STM32 BlackPill.
  • Connecting the CAN transceiver’s TXD/RXD pins to the STM32.
  • Retrying the SWD header net connections.
  • Setting up a 4-layer board stackup (inner power/ground).
  • Measuring component extents and resizing the board outline.
  • Applying ground-fill to the ground planes.
Success criteria status

Table

CriterionStatus
Validated BlackPill module with SWD, DI, DO, and CAN circuitryPartial (SWD/CAN nets open)
24 V→3.3 V stage with protection and decouplingMet
Protected 0–24 V inputs and outputs with TVS, dividers, Schmitt, flyback, test points, LEDsMet
CAN interface with selectable termination and TVS protectionPartial (termination/TVS done, TX/RX unconnected)
PCB layout with clear labeling, accessible test points, mounting holesPartial (placement done, ground plane/stackup pending)
Readily sourced parts and production-grade design practicesMet
Recommended next step
Finish the remaining net connections for the SWD header and CAN transceiver. Once all nets are fully wired, we can finalize the PCB stackup, board outline, and ground-fill to complete the layout phase.
41 days

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D6
D5
PA7
5V
NRST
VBAT
PB5
PA12
PB14
PA11
PA10
P37
PB2
PA15
PA5
PA6
PB8
PA1
PC13
PB10
3V3
GND
PB12
PA3
3V3
PA8
5V
PB3
PB9
PA0
PB4
PA4
PB13
PC15
GND
PB7
PB0
PB1
PA9
PC14
PB15
PB6
  • Ground
    Ground
    A common return path for electric current. Commonly known as ground.
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    Net Portal
    Wirelessly connects nets on schematic. Used to organize schematics and separate functional blocks. To wirelessly connect net portals, give them same designator. #portal
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  • Power Net Portal
    Power Net Portal
    Wirelessly connects power nets on schematic. Identical to the net portal, but with a power symbol. Used to organize schematics and separate functional blocks. To wirelessly connect power net portals, give them the same designator. #portal #power
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  • Generic Resistor
    Generic Resistor
    A generic fixed resistor for rapid developing circuit topology. Save precious design time by seamlessly add more information to this part (value, footprint, etc.) as it becomes available. Standard resistor values: 1.0Ω 10Ω 100Ω 1.0kΩ 10kΩ 100kΩ 1.0MΩ 1.1Ω 11Ω 110Ω 1.1kΩ 11kΩ 110kΩ 1.1MΩ 1.2Ω 12Ω 120Ω 1.2kΩ 12kΩ 120kΩ 1.2MΩ 1.3Ω 13Ω 130Ω 1.3kΩ 13kΩ 130kΩ 1.3MΩ 1.5Ω 15Ω 150Ω 1.5kΩ 15kΩ 150kΩ 1.5MΩ 1.6Ω 16Ω 160Ω 1.6kΩ 16kΩ 160kΩ 1.6MΩ 1.8Ω 18Ω 180Ω 1.8KΩ 18kΩ 180kΩ 1.8MΩ 2.0Ω 20Ω 200Ω 2.0kΩ 20kΩ 200kΩ 2.0MΩ 2.2Ω 22Ω 220Ω 2.2kΩ 22kΩ 220kΩ 2.2MΩ 2.4Ω 24Ω 240Ω 2.4kΩ 24kΩ 240kΩ 2.4MΩ 2.7Ω 27Ω 270Ω 2.7kΩ 27kΩ 270kΩ 2.7MΩ 3.0Ω 30Ω 300Ω 3.0KΩ 30KΩ 300KΩ 3.0MΩ 3.3Ω 33Ω 330Ω 3.3kΩ 33kΩ 330kΩ 3.3MΩ 3.6Ω 36Ω 360Ω 3.6kΩ 36kΩ 360kΩ 3.6MΩ 3.9Ω 39Ω 390Ω 3.9kΩ 39kΩ 390kΩ 3.9MΩ 4.3Ω 43Ω 430Ω 4.3kΩ 43KΩ 430KΩ 4.3MΩ 4.7Ω 47Ω 470Ω 4.7kΩ 47kΩ 470kΩ 4.7MΩ 5.1Ω 51Ω 510Ω 5.1kΩ 51kΩ 510kΩ 5.1MΩ 5.6Ω 56Ω 560Ω 5.6kΩ 56kΩ 560kΩ 5.6MΩ 6.2Ω 62Ω 620Ω 6.2kΩ 62KΩ 620KΩ 6.2MΩ 6.8Ω 68Ω 680Ω 6.8kΩ 68kΩ 680kΩ 6.8MΩ 7.5Ω 75Ω 750Ω 7.5kΩ 75kΩ 750kΩ 7.5MΩ 8.2Ω 82Ω 820Ω 8.2kΩ 82kΩ 820kΩ 8.2MΩ 9.1Ω 91Ω 910Ω 9.1kΩ 91kΩ 910kΩ 9.1MΩ #generics #CommonPartsLibrary
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  • Generic Capacitor
    Generic Capacitor
    A generic fixed capacitor ideal for rapid circuit topology development. You can choose between polarized and non-polarized types, its symbol and the footprint will automatically adapt based on your selection. Supported options include standard SMD sizes for ceramic capacitors (e.g., 0402, 0603, 0805), SMD sizes for aluminum electrolytic capacitors, and through-hole footprints for polarized capacitors. Save precious design time by seamlessly add more information to this part (value, footprint, etc.) as it becomes available. Standard capacitor values: 1.0pF 10pF 100pF 1000pF 0.01uF 0.1uF 1.0uF 10uF 100uF 1000uF 10,000uF 1.1pF 11pF 110pF 1100pF 1.2pF 12pF 120pF 1200pF 1.3pF 13pF 130pF 1300pF 1.5pF 15pF 150pF 1500pF 0.015uF 0.15uF 1.5uF 15uF 150uF 1500uF 1.6pF 16pF 160pF 1600pF 1.8pF 18pF 180pF 1800pF 2.0pF 20pF 200pF 2000pF 2.2pF 22pF 20pF 2200pF 0.022uF 0.22uF 2.2uF 22uF 220uF 2200uF 2.4pF 24pF 240pF 2400pF 2.7pF 27pF 270pF 2700pF 3.0pF 30pF 300pF 3000pF 3.3pF 33pF 330pF 3300pF 0.033uF 0.33uF 3.3uF 33uF 330uF 3300uF 3.6pF 36pF 360pF 3600pF 3.9pF 39pF 390pF 3900pF 4.3pF 43pF 430pF 4300pF 4.7pF 47pF 470pF 4700pF 0.047uF 0.47uF 4.7uF 47uF 470uF 4700uF 5.1pF 51pF 510pF 5100pF 5.6pF 56pF 560pF 5600pF 6.2pF 62pF 620pF 6200pF 6.8pF 68pF 680pF 6800pF 0.068uF 0.68uF 6.8uF 68uF 680uF 6800uF 7.5pF 75pF 750pF 7500pF 8.2pF 82pF 820pF 8200pF 9.1pF 91pF 910pF 9100pF #generics #CommonPartsLibrary
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  • Generic Inductor
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  • Terminal
    Terminal
    An electrical connector acting as reusable interface to a conductor and creating a point where external circuits can be connected.
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  • 875105359001
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STM32 Black Pill Breakout

STM32 Black Pill Breakout
Description

Created
Last updated by vasyl
1 Contributor(s)
vasyl

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Properties

Part Type
Breakout board
Manufacturer Name
https://www.st.com/
Manufacturer Part Number
STM32 Black Pill
Designator Prefix
U
System Architecture
```mermaid flowchart TD subgraph STM32_BlackPill [STM32 BlackPill Module] BP_MCU[BlackPill Header J1] end subgraph Power_24V_to_3V3 [Power 24V to 3.3V] VIN_24V[24V Input + Reverse Polarity] BUCK_3V3[24V to 3.3V Regulator] TP_3V3[3.3V Test Points] end subgraph DI_Block [Digital Inputs (5x, 0-24V)] DI_Frontend[Dividers + TVS Protection] DI_Schmitt[Schmitt Trigger Buffers] DI_TP[DI Test Points] end subgraph DO_Block [Digital Outputs (5x, 0-24V)] DO_Drivers[Transistor/Driver Stage + Flyback] DO_Protection[Clamp / TVS] DO_TP[DO Test Points] end subgraph CAN_Interface [CAN Interface (1-2 Channels)] CAN_Transceiver[CAN Transceiver(s)] CAN_Termination[Selectable 120R Termination] CAN_TVS[CAN TVS Protection] CAN_Conn[CAN Connector(s)] end subgraph SWD_Debug [SWD Debug Interface] SWD_Header[SWD Programming Header] SWD_TP[SWD Test Points] end VIN_24V --> BUCK_3V3 --> TP_3V3 --> BP_MCU DI_Frontend --> DI_Schmitt --> BP_MCU DI_Frontend --> DI_TP BP_MCU --> DO_Drivers --> DO_Protection DO_Drivers --> DO_TP BP_MCU --> CAN_Transceiver --> CAN_Conn CAN_Conn --> CAN_Termination CAN_Conn --> CAN_TVS SWD_Header --> BP_MCU SWD_Header --> SWD_TP ```

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