HardLabs

VNA

profdc9·VNA·board-smt/VNA.kicad_pcb

VNA PCB layout, top view — open source STM32 board by profdc9

About the VNA PCB

VNA is an open source STM32 PCB design by profdc9, published on GitHub. It is a 2-layer board measuring 100 × 85 mm, with 178 components from 63 distinct parts.

Its main chip is the STM32F103C8T6, from the STM32 family. Other key parts include the SI5351A, LM393, SA612, LM358 and AMS1117-3V3. By type, the board carries 64 resistors, 60 capacitors, 16 connectors, 14 ICs, 9 inductors and 5 jumpers.

From the project

Vector Network Analyzer based on the STM32F103C8T6 bluepill

This a project to create a Vector Network Analyzer based on the EU1KY antenna tuner that can be reconfigured for different needs. This material is copyrighted by Daniel Marks (KW4TI) and licensed under the Creative Commons License CC-BY-SA 4.0. The software is licensed under the zlib license. These are open source licenses that permit commercial use, modification and redistribution with attribution, and require licensees to assume all risk for using the copyrighted materials.

Main components on the VNA

SI5351ALM393SA612LM358AMS1117-3V378M05_TO252MT3608CN3052MicroSD_SPI_CDSTM32F103C8T6

VNA bill of materials (BOM)

178 components, 63 distinct parts — part numbers from the project's BOM.

QtyPartRefs
2
SI5351A
U1, U12
1
LM393
U2
3
SA612
U3, U4, U5
2
LM358
U6, U7
1
AMS1117-3V3
U8
1
78M05_TO252
U9
1
MT3608
U10
1
CN3052
U11
1
MicroSD_SPI_CD
U13
1
STM32F103C8T6
U14
1
2SC3356
Q3
1
C9006
25 MHz
Y1
1
C115962
8 MHz
Y2
1
CONN_02X07_ODD_EVEN
Conn_02x07_Odd_Even
J1
2
Conn_Coaxial
J2, J9
2
CONN_01X04
Conn_01x04
J3, J10
8
CONN_01X01
Conn_01x01
J8, J11, J14, J16, J18, J19, J20, J21
1
Barrel_Jack
J13
1
CONN_01X02
Conn_01x02
J15
1
USB_B
J24
Show 43 more
QtyPartRefs
4
Jumper_NC_Small
JP1, JP2, JP3, JP7
1
Jumper_NC_Dual
JP5
1
SW_DPDT_X2
SW_DPDT_x2
SW1
1
SW_DIP_X01
SW_DIP_x01
SW2
3
SS14
D3, D4, D5
1
MMSZ5232B
D6
1
LED
D7
7
C1015
Ferrite_Bead_Small
L1, L2, L3, L4, L5, L6, L7
2
10 uH
L9, L10
38
100 nF
C1, C2, C3, C5, C6, C8, C9, C10 +30
2
1000 uF
C4, C7
3
330 pF
C14, C15, C16
3
10 nF
C26, C27, C28
3
68 pF
C29, C30, C31
3
1 nF
C34, C35, C36
2
22 uF
C38, C44
1
4.7 uF
C45
1
1 uF
C47
1
10 uF
C49
1
100 uF
C52
2
22 pF
C58, C60
13
10K
10k
R1, R2, R7, R10, R36, R37, R38, R39 +5
5
1k
R3, R28, R29, R32, R42
1
680R
R4
1
47R
51R
R5
2
4R7
1R
R6, R13
12
1K5
1k5
R8, R9, R19, R20, R21, R25, R26, R27 +4
1
47R
82R
R11
4
51R
R14, R16, R44, R46
1
220R
51R
R15
1
4R7
R17
1
47R
R18
3
100K
100k
R22, R23, R24
3
2K2
2k2
R30, R31, R33
2
1M
R34, R35
3
C17477
0R
R41, R50, R63
2
22R
R47, R48
2
220R
R51, R58
1
270R
R57
3
100R
R59, R61, R62
1
68R
R60
1
120R
R67
1
22R
1R
R68

VNA design files

The KiCad project lives in the profdc9/VNA repository on GitHub; these links point at the commit this page was built from.

VNA: common questions

What microcontroller does the VNA use?

The VNA is built around the STM32F103C8T6, from the STM32 family.

How big is the VNA PCB?

The VNA measures 100 × 85 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the VNA?

178 components, from 63 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 VNA design files?

From the profdc9/VNA repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.

Can I use the VNA design in my own project?

The repository has no license, so all rights stay with profdc9. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the VNA 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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