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HM-Collector-Rev2

konstantinosfragkoulis·HealthMonitor·hardware/HM-Rev2/HM-Collector-Rev2.kicad_pcb

HM-Collector-Rev2 PCB layout, top view — open source STM32 board by konstantinosfragkoulis

About the HM-Collector-Rev2 PCB

HM-Collector-Rev2 is an open source STM32 PCB design by konstantinosfragkoulis, published on GitHub under the MIT license. It is a 4-layer board measuring 37.5 × 29.5 mm, with 87 components from 34 distinct parts.

Its main chip is the STM32U595RJTXQ, from the STM32 family. Other key parts include the TPS7A2033PDBVR, AD8232ACPZ-R7, ST1VAFE6AXTR and W25Q128JVS. By type, the board carries 35 capacitors, 32 resistors, 7 diodes, 6 ICs, 4 connectors and 2 crystals.

It belongs with the sensors designs in this gallery.

From the project

Bare metal STM32U5 health monitor capturing synchronized ECG & SCG signals.

Bare metal wearable for real-time Electrocardiogram (ECG), Seismocardiogram (SCG), and respiratory rate extraction.

Core Stack: STM32U5 (Cortex-M33) | ST1VAFE6AX (6-axis IMU) | AD8232 (ECG AFE)

The main loop runs three independent DSP pipelines on-device:

ECG (Pan-Tompkins++): Bandpass -> derivative -> squaring -> flattop smoothing -> MWI. Uses adaptive thresholding with search-back for real-time R-peak detection [1]. SCG (Template Matching NCC): Accel Z-axis (dorso-ventral) filtered at 7-30 Hz. Bootstraps a heartbeat template during the first 10s via a 4th-power envelope and pairwise NCC…

HM-Collector-Rev2, from the project README
From the project README

Main components on the HM-Collector-Rev2

TPS7A2033PDBVRAD8232ACPZ-R7STM32U595RJTXQST1VAFE6AXTRW25Q128JVS

HM-Collector-Rev2 bill of materials (BOM)

87 components, 34 distinct parts — part numbers from the project's BOM.

QtyPartRefs
2
TPS7A2033PDBVR
IC1, IC2
1
AD8232ACPZ-R7
IC3
1
STM32U595RJTXQ
STM32U595RJTxQ
U1
1
ST1VAFE6AXTR
U2
1
W25Q128JVS
U3
1
CRYSTAL_GND24
Crystal_GND24
Y1
1
Crystal
Y2
1
Conn_01x05_Pin
J1
1
SJ2-35813B-SMT-TR
J2
1
USB_C_RECEPTACLE_USB2.0_16P
USB_C_Receptacle_USB2.0_16P
J3
1
Conn_01x02_Pin
J4
2
C8598
D
D1, D2
5
LED
D3, D4, D5, D6, D7
1
2.2u
L1
14
100N
100n
C1, C4, C5, C6, C8, C12, C15, C22 +6
6
1u
C2, C3, C13, C14, C20, C21
4
10U
10u
C7, C9, C34, C35
2
2.2U
2.2u
C10, C11
2
12P
12p
C16, C17
2
18P
18p
C18, C19
Show 14 more
QtyPartRefs
2
4.7U
4.7u
C24, C28
1
1n
C25
1
6.8N
6.8n
C26
1
2.7N
2.7n
C27
4
10K
10k
R1, R2, R19, R22
5
10M
R3, R4, R5, R9, R10
2
180K
180k
R6, R7
1
360k
R8
5
1M
R11, R12, R15, R20, R21
1
100K
100k
R13
1
332k
R14
6
33
R16, R17, R18, R23, R24, R25
2
5.1K
5.1k
R26, R27
5
1k
R28, R29, R30, R31, R32

HM-Collector-Rev2 design files

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

HM-Collector-Rev2: common questions

What microcontroller does the HM-Collector-Rev2 use?

The HM-Collector-Rev2 is built around the STM32U595RJTXQ, from the STM32 family.

How big is the HM-Collector-Rev2 PCB?

The HM-Collector-Rev2 measures 37.5 × 29.5 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the HM-Collector-Rev2?

87 components, from 34 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 HM-Collector-Rev2 design files?

From the konstantinosfragkoulis/HealthMonitor 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 HM-Collector-Rev2 design in my own project?

Yes, under the terms of its MIT license, which konstantinosfragkoulis chose for the repository.

Can I test firmware for the HM-Collector-Rev2 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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