6 layers
Pc healthypi move sensor v9
Protocentral/healthypi-move-hw
Hardware files for the HealthyPi Move
124 parts160MIT
2 layers36 × 17.5 mm
Pc pulse express v3
Protocentral/protocentral_pulse_express_hardwareOpen-source hardware design files for the ProtoCentral Pulse Express MAX30102 + MAX32664D breakout
- Size
- 36 × 17.5 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 38
- Nets
- 38
- Pads
- 124
- Tracks, vias
- 264, 39
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 19 Aug 2026
- Updated
- 19 Aug 2026
Overview
Pc pulse express v3 is an open-source printed circuit board by Protocentral, from the Protocentral/protocentral_pulse_express_hardware repository on GitHub, published under the CERN-OHL-P-2.0 licence. It is a 2-layer board of 36 × 17.5 mm with 38 parts on 38 nets, routed with 264 tracks and 39 vias.
It is built around the MAX32664GTGD+, MAX30102 and TXS0102DQER, with the AP2112K-1.8, AP2112K-3.3 and SIT1533AI-H4-DCC-32.768E among its other parts. Its parts include 13 capacitors, 10 resistors and 5 ICs. It belongs with the interfaces and adapters boards of this library.
Main components
6MAX32664GTGD+
TQFN-24(3x3)Hardware reset TQFN-24(3x3) Sensor Modules ROHSMaxim Integrated (Analog Devices)Human Body Sensing Sensor
MAX30102
-Integrated ambient light cancellation (ALC)、Built-in temperature sensor、With proximity detection function - Heart Rate Sensors ROHSAnalog DevicesHeart Rate Sensors
TXS0102DQER
X2-SON-8(1x1.4)-40℃~+85℃ 1 1.65V~3.6V 2 2.3V~5.5V 24Mbps Automatic direction detection、Output enable high-impedance、Integrated pull-up resistor Bidirectional Level translator Push-Pull、Open-drain SMBus、I2C、UART X2-SON-8(1x1.4) Translators, Level Shifters ROHSTexas InstrumentsTranslators, Level Shifters
AP2112K-1.8
SOT251.8V 600mA CMOS Low Dropout Linear Regulator with EnableDiodes IncorporatedUncategorisedAP2112K-3.3
SOT253.3V 600mA CMOS Low Dropout Linear Regulator with EnableDiodes IncorporatedUncategorised
SIT1533AI-H4-DCC-32.768E
SMD2012-4P-40℃~+85℃ 1.5V~3.63V 32.768kHz LVCMOS ±100ppm SMD2012-4P Programmable Oscillators ROHSSiTimeProgrammable Oscillators
README
README.mdProtoCentral Pulse Express — Hardware
Open-source hardware design files for the ProtoCentral Pulse Express pulse-oximetry / heart-rate breakout — pairing the Maxim MAX30102 optical sensor with the Maxim MAX32664D biometric sensor hub.
Unlike our Pulse board, which streams raw PPG for the host to process, Pulse Express runs Maxim's algorithms on the MAX32664D hub itself and returns computed heart rate, SpO₂, and blood-pressure-trend estimates over I²C. That offloads the signal processing from your MCU at the cost of visibility into the raw signal.
Links
| 🛒 Product page | https://protocentral.com/product/pulse-express-pulse-ox-heart-rate-sensor-with-max32664/ |
| 💻 Arduino library | https://github.com/Protocentral/protocentral-pulse-express |
| 📄 Sensor hub datasheet (Analog Devices / Maxim) | https://www.analog.com/media/en/technical-documentation/data-sheets/MAX32664.pdf |
| 📄 Optical sensor datasheet | https://www.analog.com/media/en/technical-documentation/data-sheets/MAX30102.pdf |
Specifications
- Sensor hub: Maxim MAX32664GTGD+ (MAX32664D variant) with 32.768 kHz crystal
- Optical sensor: Maxim MAX30102 — red (660 nm) + IR (880 nm) LEDs, photodiode, and AFE
- Output: computed heart rate, SpO₂, and blood-pressure trend from the on-hub algorithms
- Interface: I²C, via 2× TXS0102 bidirectional level translators
- Connector: 6-pin 0.1″ header
- Supply: onboard AP2112K-3.3 V and AP2112K-1.8 V LDOs
- Board: 36.0 × 17.5 mm, 2-layer
Revisions
| Revision | Design files | Notes |
|---|---|---|
| v3 (current) | hardware/ | KiCad 10 |
| earlier | protocentral-pulse-express/hardware/ | Eagle; retained in the Arduino library repository so existing links keep working |
Repository layout
| Folder | Contents |
|---|---|
hardware/ | KiCad project (schematic + PCB layout) and the exported schematic PDF |
Important notice
This device is intended for research, education, and evaluation use only. It is not a medical diagnostic instrument and is not FDA, CE, or FCC approved for consumer use. The blood-pressure-trend output of the MAX32664D requires per-user calibration and is not a substitute for a validated blood-pressure monitor.
License
The hardware design files in this repository are licensed under the CERN Open Hardware Licence Version 2 – Permissive (CERN-OHL-P v2). See LICENSE.
The accompanying firmware/library (in the separate protocentral-pulse-express repository) is licensed under the MIT License.
Parts
38| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | 1u | Capacitor_SMD:C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C25, C26, C70, C74 |
| 4 | DNP | Resistor_SMD:R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R3, R5, R6, R7 |
| 4 | LOGO | LOGO | G***, G***, G***, G*** |
| 3 | 10k | Resistor_SMD:R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R9, R10, R11 |
| 3 | 1uF | Capacitor_SMD:C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C1, C7, C8 |
| 2 | 10K | Resistor_SMD:R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R24, R25 |
| 2 | 12pF | Capacitor_SMD:C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C3, C4 |
| 2 | TXS0102DQE | Package_SON:X2SON-8_1.4x1mm_P0.35mm | U1, U2 |
| 1 | 100nF | Capacitor_SMD:C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C9 |
| 1 | 10R | Resistor_SMD:R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R4 |
| 1 | 10uF | Capacitor_SMD:C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C2 |
| 1 | 1uF | pc_pulse Express:_0402 | C14 |
| 1 | 22pF | pc_pulse Express:_0402 | C15 |
| 1 | 520-327-12.5-34B(32.768KHZ) | pc_pulse Express:ECX-31B | U$19 |
| 1 | AP2112K-1.8 | Package_TO_SOT_SMD:SOT-23-5 | U4 |
| 1 | AP2112K-3.3 | Package_TO_SOT_SMD:SOT-23-5 | U5 |
| 1 | MA06-1 | pc_pulse Express:MA06-1 | SV1 |
| 1 | MAX30102 | OptoDevice:Maxim_OLGA-14_3.3x5.6mm_P0.8mm | U3 |
| 1 | MAX32664GTGD+ | kicad_protocentral_footprints:TQFN-24L | U$17 |
| 1 | PULSE | pc_pulse Express:PULSESMALL | U$4 |
| 1 | SIT1533AI-H4-DCC-32.768E | pc_pulse Express:SIT1533 | U$29 |
| 1 | TPSQTP11R | pc_pulse Express:TP11R_385 | SWIO1 |
Questions
How big is the Pc pulse express v3 PCB?
It measures 36 × 17.5 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Pc pulse express v3 use?
38 parts, built around the MAX32664GTGD+, MAX30102, TXS0102DQER and AP2112K-1.8. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Pc pulse express v3 KiCad files?
From the Protocentral/protocentral_pulse_express_hardware repository on GitHub, at the commit this page was made from: the board is hardware/pc_pulse_express_v3.kicad_pcb and its schematic hardware/pc_pulse_express_v3.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Pc pulse express v3 design in my own project?
Its repository publishes it under the CERN-OHL-P-2.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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