HardLabs

Keycard shell

keycard-tech·keycard-shell·hardware/development_board/devboard_v2/kicad/ProPrj_Segun_O_pcb_fiverr_2026-03-03.kicad_pcb

Keycard shell PCB layout, top view — open source STM32 board by keycard-tech
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About the Keycard shell PCB

Keycard shell is an open source STM32 PCB design by keycard-tech, published on GitHub under the MIT license. It is a 4-layer board measuring 95 × 130 mm, with 134 components from 55 distinct parts.

Its main chip is the STM32H573VIT6, from the STM32 family. Other key parts include the SY8088IAAC, MP2607DL-LF-P, XC6194AA05ER-G, NCP115AMX150TCG and TLVH431AQDBZRG4. By type, the board carries 50 capacitors, 31 resistors, 10 ICs, 7 transistors, 6 connectors and 6 diodes.

It belongs with the dev boards & breakouts designs in this gallery.

From the project

Modular, fully open hardware wallet

For security reasons Shell in presales and sales have a locked bootloader that can only run firmwares which have been signed by Keycard CA key. This insures our users that they can trust the software they run.

For developers who want to develop Shell firmware, you will find in this folder the full design of a development board for Shell

The folder '/devboard_v1' contains this design. Please note that there are some differences in the STM32 pinout between this development board version and shell board.

Main components on the Keycard shell

SY8088IAACMP2607DL-LF-PXC6194AA05ER-GNCP115AMX150TCGTLVH431AQDBZRG4ESDS312DBVRNCP115AMX180TCGNCP115AMX280TCG5145300-3STM32H573VIT6

Keycard shell bill of materials (BOM)

134 components, 55 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
SY8088IAAC
Silergy
IC2
1
MP2607DL-LF-P
Monolithic Power Systems Inc.
U1
1
XC6194AA05ER-G
TOREX
U2
1
NCP115AMX150TCG
onsemi
U3
1
TLVH431AQDBZRG4
TI(德州仪器)
U5
1
ESDS312DBVR
TI(德州仪器)
U7
1
NCP115AMX180TCG
onsemi
U8
1
NCP115AMX280TCG
onsemi
U9
1
5145300-3
TE Connectivity(泰科电子)
U10
1
STM32H573VIT6
ST(意法半导体)
U12
1
BSS123-TP
MCC(美微科)
Q1
2
RE1C001UNTCL
ROHM(罗姆)
Q2, Q5
1
RZM002P02T2L
ROHM(罗姆)
Q3
1
RE1C001ZPTL
ROHM(罗姆)
Q4
2
RE1C001UNTCL
RE1C001ZPTL
ROHM(罗姆)
Q6, Q7
1
HC-FPC-05-09-24RLTAG
X1
1
HX JN1.27-2x10 TP H4.9
hanxia(韩下)
CN1
1
TP
J1V8
1
FFC2B35-12-G
XUNPU
J2
1
1982633-1
TE Connectivity
J6
Show 35 more
QtyPartRefs
1
U6252-35C
U6252-35c
SHOU HAN
J8
1
TC2030-MCP-NL
P210
10
—
0, 1, 2, 3, 4, 5, 6, 7 +2
7
TP
1V5, 1V8, 2V8, GND4, Rx4, Tx4, V3P0
1
0ZCK0075FF2E
BNP05000F000
Littelfuse
F1
1
BNP05000F000
0ZCK0075FF2E
Littelfuse
F2
2
—
Mire Top 1, Mire Top 2
1
NTR3C21NZT1G
TECH PUBLIC(台舟)
T1
1
82400152
TECH PUBLIC(台舟)
D1
1
LR_Y8SF-U1V2-1
OSRAM
D2
1
MBR0530
YANGJIE(扬杰)
D3
2
MBR0530T1G
onsemi(安森美)
D4, D5
1
BZX585-C3V0,115
Nexperia(安世)
D6
1
2.2UH
2.2uH
Chilisin(奇力新)
L1
18
4.7UF
4.7uF
FH(风华)
C1, C4, C5, C6, C13, C14, C17, C21 +10
19
100NF
100nF
Walsin(华新科)
C2, C9, C15, C16, C19, C24, C27, C35 +11
1
4.7UF
4.7uF
YAGEO(国巨)
C3
9
1UF
1uF
Walsin(华新科)
C7, C8, C10, C11, C12, C39, C41, C48 +1
1
9PF
9pF
muRata(村田)
C28
2
2.2UF
2.2uF
SAMSUNG(三星)
C29, C30
1
ERTJ0EP473GM
PANASONIC(松下)
R1
3
RC0402FR-075K1L
5.1kΩ
YAGEO(国巨)
R2, R3, R4
1
RC0402FR-07200RL
200Ω
YAGEO(国巨)
R5
1
RC0402FR-0740K2L
40.2kΩ
YAGEO(国巨)
R6
1
RC0402FR-07118KL
118kΩ
YAGEO(国巨)
R7
7
RC0402FR-0710KL
10kΩ
YAGEO(国巨)
R8, R11, R17, R18, R19, R20, R24
5
RC0402FR-07100KL
100kΩ
YAGEO(国巨)
R9, R10, R14, R16, R28
1
RC0402FR-0710RL
YAGEO(国巨)
R12
1
RC0402FR-07205KL
205kΩ
YAGEO(国巨)
R13
1
RC0402FR-0749K9L
49.9kΩ
YAGEO(国巨)
R15
5
RC0402FR-07220KL
220kΩ
YAGEO(国巨)
R21, R22, R25, R32, R100
1
RC0402FR-0775KL
75kΩ
YAGEO(国巨)
R23
1
RC0402FR-07750KL
750kΩ
YAGEO(国巨)
R26
1
RC0201FR-071ML
1MΩ
YAGEO(国巨)
R27
1
RC0402FR-0711K5L
11.5kΩ
YAGEO(国巨)
R33

Keycard shell design files

The KiCad project lives in the keycard-tech/keycard-shell repository on GitHub; these links point at the commit this page was built from.

Keycard shell: common questions

What microcontroller does the Keycard shell use?

The Keycard shell is built around the STM32H573VIT6, from the STM32 family.

How big is the Keycard shell PCB?

The Keycard shell measures 95 × 130 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the Keycard shell?

134 components, from 55 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 Keycard shell design files?

From the keycard-tech/keycard-shell 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 Keycard shell design in my own project?

Yes, under the terms of its MIT license, which keycard-tech chose for the repository.

Can I test firmware for the Keycard shell 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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