HardLabs

LockNfc3

Kreyl·LockNFC·LockNfc_hw/LockNfc3.kicad_pcb

LockNfc3 PCB layout, top view — open source STM32 board by Kreyl

About the LockNfc3 PCB

LockNfc3 is an open source STM32 PCB design by Kreyl, published on GitHub. It is a 2-layer board measuring 109 × 64 mm, with 118 components from 49 distinct parts.

Its main chip is the STM32F205RX-64, from the STM32 family. By type, the board carries 48 capacitors, 25 resistors, 8 transistors, 4 switches, 2 fuses and 2 diodes.

LockNfc3 bill of materials (BOM)

118 components, 49 distinct parts.

QtyPartRefs
1
IRLML9303
Q1
1
BC817
Q2
3
IRLML6302
Q3, Q4, Q5
3
LED_RGB
Q6, Q7, Q8
1
VS1011
DA1
1
TPA6211
DA2
1
NCP583SQ
DA3
1
PN532
DD1
1
M24C04
DD2
1
STM32F205RX-64
DD3
2
FUSE0R
F1, F2
4
HOLE_METALLED
HOLE1, HOLE2, HOLE3, HOLE4
1
SS9
SW1
3
BUTTON
SW2, SW3, SW4
2
2.2u
VCap1, VCap2
1
CONN_4
XL1
1
CONN_4
XL2
4
CONN_4
XL3, XL11, XL12, XL13
1
ST_SWD
XL4
1
USB_MICRO_B
XL5
Show 29 more
QtyPartRefs
1
CONN_2
XL6
1
CONN_3
XL7
1
CONN_MICROSD
XL8
1
CONN_1
XL9
1
CONN_1
XL10
1
27.12MHz
XTAL1
1
12.0MHz
XTAL2
2
D_SHOTTKY
D1, D2
2
560n
L1, L2
2
10n
C1, C3
21
0.1u
C2, C7, C9, C10, C12, C13, C17, C18 +13
2
22p
C4, C5
7
1u
C6, C15, C35, C38, C45, C47, C49
2
4u7
C8, C14
2
1n
C11, C16
4
10u
C19, C26, C30, C43
2
220p
C20, C21
4
*
C22, C31, C32, C33
2
20pF
C36, C37
2
4K7
R1, R2
2
20
R3, R5
3
1k
R4, R9, R13
1
150
R6
2
10k
R7, R8
1
220R
R10
9
100R
R11, R12, R18, R20, R21, R22, R23, R24 +1
1
2k7
R14
2
100k
R15, R16
2
1
R17, R19

LockNfc3 design files

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

LockNfc3: common questions

What microcontroller does the LockNfc3 use?

The LockNfc3 is built around the STM32F205RX-64, from the STM32 family.

How big is the LockNfc3 PCB?

The LockNfc3 measures 109 × 64 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the LockNfc3?

118 components, from 49 distinct parts. The full bill of materials is listed on this page.

Where can I download the LockNfc3 design files?

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

Can I use the LockNfc3 design in my own project?

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

Can I test firmware for the LockNfc3 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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