HardLabs

STM32

syamei0·kicad·STM32/STM32/STM32.kicad_pcb

STM32 PCB layout, top view — open source ESP32 board by syamei0

About the STM32 PCB

STM32 is an open source ESP32 PCB design by syamei0, published on GitHub. It is a 2-layer board measuring 100 × 100 mm, with 33 components from 17 distinct parts.

Its main chip is the ESP32-WROOM-32E, from the ESP32 family. By type, the board carries 31 connectors, 1 IC and 1 switch.

From the project

⚠注意⚠ リレーの逆起電力対策がされていません。 ダイオードを外付けして使用してください。

⚠注意⚠ リレーの逆起電力対策がされていません。 ダイオードを外付けして使用してください。

入力は12V 出力 12V×7(合計20Aまで) 5V×8(3.3V出力と合わせて合計1.5Aまで) 3.3V×8(合計800mAまで)

仕様 ・圧電スピーカーは0ピン ・CANはTXDが5ピン、RXDが4ピン ・JP3とJP4はcanの終端抵抗 ・上バー付の数字はPWM可 ・白抜き文字は書き込み中プルアップ

STM32, from the project README
From the project README

Main components on the STM32

ESP32-WROOM-32E

STM32 bill of materials (BOM)

33 components, 17 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
ESP32-WROOM-32E
NUCLEO-F446RE
U1
1
Conn_02x07_Odd_Even
J1
9
CONN_01X02_SOCKET
Conn_01x02_Socket
J2, J5, J6, J7, J11, J12, J13, J14 +1
1
FT234X
Conn_01x02_Socket
J3
2
I2C
Conn_01x02_Socket
J4, J17
1
CONN_01X02_SOCKET
Conn_01x01_Socket
J8
1
INPUT_1
Conn_01x02_Socket
J9
1
INPUT_2
Conn_01x02_Socket
J10
6
CONN_01X03_SOCKET
Conn_01x02_Socket
J15, J18, J19, J22, J23, J24
1
CONN_01X15_SOCKET
Conn_01x01_Socket
J16
1
CONN_01X15_SOCKET
Conn_01x02_Socket
J20
2
RJ45_SHIELDED
Conn_01x02_Socket
J25, J27
1
USB_C_RECEPTACLE_USB2.0_16P
Conn_01x02_Socket
J26
1
Conn_01x02_Socket
J28
1
Conn_01x04_Socket
J29
2
Conn_01x01_Socket
J33, J34
1
SW_NIDEC_CAS-120A1
SW_DPDT_x2
SW1

STM32 design files

The KiCad project lives in the syamei0/kicad repository on GitHub; these links point at the commit this page was built from.

STM32: common questions

What microcontroller does the STM32 use?

The STM32 is built around the ESP32-WROOM-32E, from the ESP32 family.

How big is the STM32 PCB?

The STM32 measures 100 × 100 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the STM32?

33 components, from 17 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the STM32 design files?

From the syamei0/kicad repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the STM32 design in my own project?

The repository has no license, so all rights stay with syamei0. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the STM32 without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug ESP32 firmware against it before you order a PCB.

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