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Project-Atlas

higg22-git·Project-Atlas

Project-Atlas PCB layout, top view — open source STM32 board by higg22-git

About the Project-Atlas PCB

Project-Atlas is an open source STM32 PCB design by higg22-git, published on GitHub. It is a 4-layer board measuring 125.3 × 86 mm, with 122 components from 51 distinct parts.

Its main chip is the STM32G474RET6, from the STM32 family. Other key parts include the PACDN042Y3R. By type, the board carries 38 capacitors, 27 resistors, 7 connectors, 6 transistors, 5 LEDs and 2 ICs.

From the project

Four-layer STM32G474 control board that replaced the legacy electronics on BYU Formula SAE Electric's race car. KiCad schematic, layout and manufacturing package.

Four-layer STM32G474 control board, designed from scratch to replace the legacy electronics on BYU Formula SAE Electric's race car.

I led a four-person team on this. I did all of the board layout and most of the component selection and schematic capture, and set up the Git-based version control workflow the team used for collaborative hardware design.

MCU — STM32G474RET6. The part was chosen for its FDCAN peripherals; the car needed multiple independent CAN domains and this saved external controllers.

Main components on the Project-Atlas

STM32G474RET6PACDN042Y3R

Project-Atlas bill of materials (BOM)

122 components, 51 distinct parts.

QtyPartRefs
1
STM32G474RET6
U1
1
PACDN042Y3R
U2
4
NMOS 2N7002
Q2, Q3, Q5, Q7
2
PMOS IRF9Z24S_L
Q4, Q6
1
Crystal_GND24
Y1
1
3.3V_Connection1
3V3-1
1
3.3V_Connection2
3V3-2
1
5V_Connection1
5V-1
1
5V_Connection2
5V-2
3
Conn_01x02
J4, J5, J6
3
Conn_01x02
3V3-Conn1, 5V-Conn1, 12V-Conn1
10
Conn_01x01_Pin
3V3_TP1, 5V_TP1, 12v_TP1, GND_TP1, GND_TP2, GND_TP3, IO_1, IO_2 +2
1
ST1L05APU33R
5->3V3
1
MPM3610GQV-P
12->5V1
1
12V_Connection1
12V-1
1
12V_Connection2
12V-2
2
SW_MEC_5G
BOOT1, RESET1
1
CAN1_Connector
CAN1
1
CAN2_Connector
CAN2
1
CAN3_Connector
CAN3
Show 31 more
QtyPartRefs
1
CP2102N-A20-QFN20
CP-1
1
SM5817PL-TP
CR1
1
22uF
EC_3V3
1
47uF
EC_5V1
1
100uF
EC_12V1
1
TPD2EUSB30
ESD1
1
4AFuse
F1
1
12V
POWER1
1
~
STLINK1
3
TJA1051T-3
TJACAN1, TJACAN2, TJACAN3
1
TYPE-C-3.1-16PIN
SHOU HAN(首韩)
USB1
1
LED_green_3.3v
LED-3V3
1
LED_yellow_5v
LED-5V1
3
LED_red_IOpin
LEDCAN1, LEDCAN2, LEDCAN3
1
FerriteBead_600R@100MHz
FB1
2
10pF
C1, C2
18
100nF
C3, C4, C5, C8, C9, C11, C12, C14 +10
2
1u
C6, C7
12
4.7u
C10, C13, C15, C16, C20, C24, C26, C27 +4
1
10uF
C19
1
22uF
C31
2
1nF
C32, C35
4
510
R1, R3, R19, R24
4
1k
R2, R14, R16, R25
6
10k
R4, R5, R9, R10, R13, R18
2
5.1K
R6, R7
6
100k
R8, R11, R20, R21, R22, R23
2
500
R12, R17
1
19.1k
R15
1
47.5K
R26
1
22.1K
R27

Project-Atlas design files

The KiCad project lives in the higg22-git/Project-Atlas repository on GitHub; these links point at the commit this page was built from.

Project-Atlas: common questions

What microcontroller does the Project-Atlas use?

The Project-Atlas is built around the STM32G474RET6, from the STM32 family.

How big is the Project-Atlas PCB?

The Project-Atlas measures 125.3 × 86 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the Project-Atlas?

122 components, from 51 distinct parts. The full bill of materials is listed on this page.

Where can I download the Project-Atlas design files?

From the higg22-git/Project-Atlas repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Project-Atlas design in my own project?

The repository has no license, so all rights stay with higg22-git. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Project-Atlas without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug STM32 firmware against it before you order a PCB.

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