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Impedance Measurement

LikeFall123·Impedance_Measurement

Impedance Measurement PCB layout, top view — open source STM32 board by LikeFall123
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About the Impedance Measurement PCB

Impedance Measurement is an open source STM32 PCB design by LikeFall123, published on GitHub. It is a 2-layer board measuring 90 × 61 mm, with 69 components from 28 distinct parts.

Its main chip is the STM32F401RCT6, from the STM32 family. Other key parts include the DAC80501ZDGST, MAX660MX/NOPB, MC33202DR2G and AMS1117-3.3. By type, the board carries 34 capacitors, 15 resistors, 8 connectors, 5 ICs, 4 inductors and 1 crystal.

It belongs with the test & measurement designs in this gallery.

From the project

Project laboratory excercise

The STM32F407 MCU calculates the impedance of the selected passive component, by measuring the excitation signal and the response.

Used techniques:\ -ADC + DMA\ -Real time Fourier transform (armmath.h)\ -Model based sine parameter estimation

Main components on the Impedance Measurement

DAC80501ZDGSTMAX660MX/NOPBMC33202DR2GAMS1117-3.3STM32F401RCT6

Impedance Measurement bill of materials (BOM)

69 components, 28 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
DAC80501ZDGST
IC1
1
MAX660MX/NOPB
MAX660MX_NOPB
IC2
1
MC33202DR2G
IC4
1
AMS1117-3.3
U1
1
STM32F401RCT6
U2
1
Crystal
Y1
1
Conn_01x04_Pin
J1
1
USB_B_Micro
J2
3
Conn_01x10_Pin
J3, J5, J7
1
Conn_01x06_Pin
J4
2
Conn_01x03_Pin
J6, J8
1
SW_SPDT
SW1
1
LED
D1
4
120R
FB1, FB2, FB3, FB4
2
22u
C1, C2
3
10u
C3, C7, C35
7
100n
C4, C8, C9, C10, C11, C15, C25
1
330n
C5
11
1u
C6, C13, C14, C21, C22, C26, C27, C28 +3
3
10n
C12, C23, C32
Show 8 more
QtyPartRefs
2
10p
C16, C17
3
1n
C18, C19, C29
2
150u
C20, C24
3
1k5
R1, R5, R9
4
10k
R2, R3, R4, R6
1
5k
R7
3
1k
R8, R10, R11
4
10M
R12, R13, R14, R15

Impedance Measurement design files

The KiCad project lives in the LikeFall123/Impedance_Measurement repository on GitHub; these links point at the commit this page was built from.

Impedance Measurement: common questions

What microcontroller does the Impedance Measurement use?

The Impedance Measurement is built around the STM32F401RCT6, from the STM32 family.

How big is the Impedance Measurement PCB?

The Impedance Measurement measures 90 × 61 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Impedance Measurement?

69 components, from 28 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 Impedance Measurement design files?

From the LikeFall123/Impedance_Measurement 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 Impedance Measurement design in my own project?

The repository has no license, so all rights stay with LikeFall123. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Impedance Measurement 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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