6 layers120 × 70 mm
Healthypi 6 v5
Protocentral/protocentral_healthypi6_hardware
Open hardware design files for HealthyPi 6 — STM32H757 vital-signs monitor with the HealthyLink modular expansion bus
247 parts2CERN-OHL-P-2.0
2 layers87.5 × 67 mm
A custom STM32-based development board designed and developed from scratch using KiCad
- Size
- 87.5 × 67 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 38
- Nets
- 52
- Pads
- 190
- Tracks, vias
- 457, 74
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 19 Aug 2026
- Updated
- 19 Aug 2026
Overview
P1Hard is an open-source printed circuit board by amineeddahy, from the amineeddahy/STM32-Development-Board repository on GitHub. It is a 2-layer board of 87.5 × 67 mm with 38 parts on 52 nets, routed with 457 tracks and 74 vias.
It is built around the BME280, AP2112K-3.3 and USBLC6-2SC6, with the ABM3-8.000MHZ-B4Y-T among its other parts. Its parts include 12 capacitors, 9 resistors, 7 connectors, 4 ICs and 4 diodes. It belongs with the microcontroller boards boards and the STM32 boards of this library.
Main components
4
BME280
LGA-8(2.5x2.5)-40℃~+85℃ 0%RH~100%RH 1.71V~3.6V 1.8uA 16bit I2C、SPI ±0.5℃ ±3%RH LGA-8(2.5x2.5) Temperature and Humidity Sensor ROHSBoschTemperature And Humidity Sensor
AP2112K-3.3
SOT253.3V 600mA CMOS Low Dropout Linear Regulator with EnableDiodes IncorporatedUncategorised
USBLC6-2SC6
SOT-23-60.35pF、0.8pF 100nA 150W@8/20us 15V 2 5V 6A@8/20us 6V ESD SOT-23-6 ESD and Surge Protection (TVS/ESD) ROHSUMWESD And Surge Protection (TVS/ESD)
ABM3-8.000MHZ-B4Y-T
SMD5032-2P-20℃~+70℃ 140Ω 18pF 8MHz ±30ppm ±30ppm SMD5032-2P Crystals ROHSAbraconCrystals
README
README.mdSTM32 Development Board
A custom STM32-based development board designed and developed from scratch using KiCad.
Overview
This project is a custom embedded development board built around an STM32 microcontroller.
The board was designed from the ground up, starting from the electrical schematic and progressing through PCB layout, routing, design rule checking, and final PCB visualization.
The main goal of this project is to develop practical experience in embedded systems, PCB design, and hardware development.
Features
- STM32-based microcontroller
- Custom PCB designed from scratch
- USB connectivity
- 3.3 V regulated power supply
- External crystal oscillator
- Reset circuitry
- Status LEDs
- GPIO access
- Ground plane
- Two-layer PCB design
Design Workflow
The board was developed using the following workflow:
- Electrical schematic design
- Component selection and symbol assignment
- PCB footprint assignment
- PCB layout
- Component placement
- PCB routing
- Ground plane creation
- Design Rule Check (DRC)
- Final PCB inspection
- 3D visualization
Tools
- KiCad
- STM32
- Git
- GitHub
Project Structure
STM32-Development-Board/
│
├── P1Hard.kicad_pcb
├── P1Hard.kicad_sch
├── P1Hard.kicad_pro
├── images/
│ ├── schematic.png
│ ├── pcb_layout.png
│ └── pcb_3d_view.png
└── README.mdProject Gallery
Electrical Schematic
PCB Layout
3D PCB Visualization
Parts
38| Qty | Value | Footprint | References |
|---|---|---|---|
| 7 | 100nf | Capacitor_SMD:C_0603_1608Metric | C3, C4, C5, C6, C10, C11, C12 |
| 2 | 10k | Resistor_SMD:R_0603_1608Metric | R3, R6 |
| 2 | 1uf | Capacitor_SMD:C_0603_1608Metric | C1, C2 |
| 2 | 22pf | Capacitor_SMD:C_0603_1608Metric | C7, C8 |
| 2 | 330 | Resistor_SMD:R_0603_1608Metric | R1, R7 |
| 2 | 4.7k | Resistor_SMD:R_0603_1608Metric | R4, R5 |
| 2 | 5.1k | Resistor_SMD:R_0603_1608Metric | R8, R10 |
| 2 | Conn_01x04 | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J4, J5 |
| 2 | D_Schottky | Diode_SMD:D_SOD-123 | D1, D4 |
| 1 | 10K | Resistor_SMD:R_0603_1608Metric | R2 |
| 1 | 4.7uf | Capacitor_SMD:C_0603_1608Metric | C9 |
| 1 | ABM3-8.000MHZ-B4Y-T | Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm | Y1 |
| 1 | AP2112K-3.3 | Package_TO_SOT_SMD:SOT-23-5 | U1 |
| 1 | BLUE | LED_SMD:LED_0805_2012Metric | D2 |
| 1 | BME280 | Package_LGA:Bosch_LGA-8_2.5x2.5mm_P0.65mm_ClockwisePinNumbering | U3 |
| 1 | Conn_01x02 | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J1 |
| 1 | Conn_01x03 | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | J3 |
| 1 | Conn_01x05 | Connector_PinHeader_2.54mm:PinHeader_1x05_P2.54mm_Vertical | J2 |
| 1 | Conn_01x08 | Connector_PinHeader_2.54mm:PinHeader_1x08_P2.54mm_Vertical | J6 |
| 1 | RED | LED_SMD:LED_0805_2012Metric | D3 |
| 1 | STM32F411CEUx | Package_DFN_QFN:QFN-48-1EP_7x7mm_P0.5mm_EP5.6x5.6mm | U2 |
| 1 | SW_Push | Button_Switch_THT:SW_PUSH_6mm | SW1 |
| 1 | USBLC6-2SC6 | Package_TO_SOT_SMD:SOT-23-6 | U4 |
| 1 | USB_C_Receptacle_USB2.0_16P | Connector_USB:USB_C_Receptacle_GCT_USB4105-xx-A_16P_TopMnt_Horizontal | J7 |
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Questions
How big is the P1Hard PCB?
It measures 87.5 × 67 mm and has 2 copper layers, 1.6 mm thick.
What parts does the P1Hard use?
38 parts, built around the BME280, AP2112K-3.3, USBLC6-2SC6 and ABM3-8.000MHZ-B4Y-T. 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 P1Hard KiCad files?
From the amineeddahy/STM32-Development-Board repository on GitHub, at the commit this page was made from: the board is P1Hard.kicad_pcb and its schematic P1Hard.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the P1Hard design in my own project?
Its repository states no licence, so its author keeps all rights: ask amineeddahy before reusing the design.