STM32F411 Footprint Design

0:00

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

Criterion	Status
Validated BlackPill module with SWD, DI, DO, and CAN circuitry	Partial (SWD/CAN nets open)
24 V→3.3 V stage with protection and decoupling	Met
Protected 0–24 V inputs and outputs with TVS, dividers, Schmitt, flyback, test points, LEDs	Met
CAN interface with selectable termination and TVS protection	Partial (termination/TVS done, TX/RX unconnected)
PCB layout with clear labeling, accessible test points, mounting holes	Partial (placement done, ground plane/stackup pending)
Readily sourced parts and production-grade design practices	Met

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.

89 days

Needs more info.

Show Plan

PA7

NRST

VBAT

PB5

PA12

PB14

PA11

PA10

P37

PB2

PA15

PA5

PA6

PB8

PA1

PC13

PB10

3V3

GND

PB12

PA3

3V3

PA8

PB3

PB9

PA0

PB4

PA4

PB13

PC15

GND

PB7

PB0

PB1

PA9

PC14

PB15

PB6

Reviews

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