HardLabs

Backup

DoloresAx·ROM_PCB·project/backup.kicad_pcb

Backup PCB layout, top view — open source STM32 board by DoloresAx

About the Backup PCB

Backup is an open source STM32 PCB design by DoloresAx, published on GitHub. It is a 2-layer board measuring 85.1 × 55.9 mm, with 78 components from 37 distinct parts.

Its main chip is the STM32F103RCTx, from the STM32 family. Other key parts include the TB6612FNG, LM2596S-5, ACS712xLCTR-20A, AMS1117-3.3 and FT232RL. By type, the board carries 25 capacitors, 22 resistors, 12 connectors, 7 ICs, 7 diodes and 3 switches.

From the project

ROM_PCB_Microcontroller

Main components on the Backup

TB6612FNGSTM32F103RCTxLM2596S-5ACS712xLCTR-20AAMS1117-3.3FT232RL

Backup bill of materials (BOM)

78 components, 37 distinct parts.

QtyPartRefs
2
TB6612FNG
U1, U5
1
STM32F103RCTx
U2
1
LM2596S-5
U3
1
ACS712xLCTR-20A
U4
1
AMS1117-3.3
U6
1
FT232RL
U7
1
8Mhz
Y1
1
Conn_01x02_Socket
J1
1
Input
J2
2
UART SERIAL
J3, J4
1
MotorB
J5
1
Conn_01x08_Pin
J6
1
MotorC
J7
1
Serial Debug
J8
1
MotorD
J9
1
MotorA
J10
1
USB_B
J11
1
POWER
J12
2
SW_Push
SW1, SW2
1
on/off
SW3
Show 17 more
QtyPartRefs
1
Red
D1
1
Green
D2
2
D
D3, D7
3
Orange
D4, D5, D6
1
47uH
L1
18
100nF
C1, C4, C7, C8, C9, C10, C11, C12 +10
2
22pF
C2, C3
1
1000uF 25V
C5
1
1nF
C17
1
470uF 25V
C18
1
10uF
C19
1
1000uF 6.3V
C23
14
10K
R1, R3, R4, R6, R7, R9, R10, R11 +6
5
470
R2, R5, R8, R13, R14
1
300K
R17
1
100K
R18
1
20K
R22

Backup design files

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

Backup: common questions

What microcontroller does the Backup use?

The Backup is built around the STM32F103RCTx, from the STM32 family.

How big is the Backup PCB?

The Backup measures 85.1 × 55.9 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Backup?

78 components, from 37 distinct parts. The full bill of materials is listed on this page.

Where can I download the Backup design files?

From the DoloresAx/ROM_PCB repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the Backup design in my own project?

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

Can I test firmware for the Backup 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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