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Stor

JBlitzar·stor·PCB/stor/stor.kicad_pcb

Stor PCB layout, top view — open source STM32 board by JBlitzar
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About the Stor PCB

Stor is an open source STM32 PCB design by JBlitzar, published on GitHub under the GPL-3.0 license. It is a 4-layer board measuring 22 × 60.5 mm, with 53 components from 24 distinct parts.

Its main chip is the STM32H723VGT6, from the STM32 family. Other key parts include the USB3300-EZK-TR and TPS62177DQCR. By type, the board carries 28 capacitors, 11 resistors, 3 ICs, 3 crystals, 2 switches and 2 LEDs.

It belongs with the usb & debug tools designs in this gallery.

From the project

A USB2.0 High Speed flash drive with a hotswappable MicroSD backend.

A USB2.0 High Speed flash drive with a hotswappable MicroSD backend.

- USB 2.0 Hi-Speed - STM32H723VGT6 MCU (Cortex-M7, 550 MHz class) - MicroSDXC backend, up to 2 TB - ~30–40 MB/s sustained, approximately saturating USB2.0

I made this because I always thought USB flash drives were pretty neat. So much storage! Easy file transfer! Ability to USB-boot! Making my own seemed like the perfect justification. Then, I saw that eMMC prices have in fact been inflated in accordance with the whole 2026 AI RAM shortage thing. You know what is still cheap per GB? microSD. You can absolutely get a…

Stor, from the project README
From the project README

Main components on the Stor

STM32H723VGT6USB3300-EZK-TRTPS62177DQCR

Stor bill of materials (BOM)

53 components, 24 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
STM32H723VGT6
ST(意法半导体)
U1
1
USB3300-EZK-TR
MICROCHIP(美国微芯)
U3
1
TPS62177DQCR
TI(德州仪器)
U4
1
X322525MOB4SI
25mhz
YXC(扬兴晶振)
X1
1
SC-32S32.768kHz20PPM12.5pF
32.768k
Seiko(精工)
X2
1
SX32Y024000BC1T001
24mhz
TKD(泰晶)
X3
1
TF-01A
韩国韩荣
Card1
2
TS1603-TZ38HBM
BXCONN(宝讯)
SW1, SW2
1
U-USBAR04P-M003
U-USBAR04P-M001
Ckmtw(灿科盟)
USB1
1
KT-0603R
KENTO
LED1
1
KT-0603W
0603White light_C2290
KENTO
LED2
1
USBLC6-2SC6
ST(意法半导体)
D1
1
XRTC322512S100MBCA
10uH
XR(祥如)
L1
3
CL05A225MQ5NSNC
2.2uF
Samsung Electro-Mechanics
C1, C2, C16
15
CL05B104KO5NNNC
100nF
Samsung Electro-Mechanics
C3, C4, C5, C6, C7, C8, C9, C10 +7
6
0402CG180J500NT
18pF
FH
C11, C12, C13, C14, C24, C25
1
CL10A226MQ8NRNC
22uF
SAMSUNG(三星)
C17
3
CL05A475MP5NRNC
4.7uF
Samsung Electro-Mechanics
C20, C22, C29
6
0402WGF1002TCE
10k
UNI-ROYAL
R1, R7, R8, R9, R10, R11
1
0402WGF1001TCE
1kΩ
UNI-ROYAL(厚声)
R3
Show 4 more
QtyPartRefs
1
0402WGF1003TCE
100k
UNI-ROYAL
R4
1
0402WGF1202TCE
12k
UNI-ROYAL
R5
1
0402WGF1004TCE
1 MΩ
UNI-ROYAL
R6
1
0402WGF2200TCE
220Ω
UNI-ROYAL(厚声)
R12

Stor design files

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

Stor: common questions

What microcontroller does the Stor use?

The Stor is built around the STM32H723VGT6, from the STM32 family.

How big is the Stor PCB?

The Stor measures 22 × 60.5 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the Stor?

53 components, from 24 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 Stor design files?

From the JBlitzar/stor 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 Stor design in my own project?

Yes, under the terms of its GPL-3.0 license, which JBlitzar chose for the repository.

Can I test firmware for the Stor 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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