4 layers100 × 70 mm
4 layers40 × 30 mm
Health Watch
abendezu10/PulseWatchDeveloped a fully functional smartwatch using an STM32 microcontroller, featuring real-time heart rate monitoring. Utilized SPI and I2C communication protocols to interface with biometric sensors and other peripherals, ensuring efficient data transmission and system performance.
- Size
- 40 × 30 mm
- Copper layers
- 4
- Thickness
- 1.59 mm
- Parts
- 37
- Nets
- 64
- Pads
- 165
- Tracks, vias
- 241, 114
- Pours
- 3
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 3 Jul 2024
- Updated
- 21 Oct 2024
Overview
Health Watch is an open-source printed circuit board by abendezu10, from the abendezu10/PulseWatch repository on GitHub. It is a 4-layer board of 40 × 30 mm with 37 parts on 64 nets, routed with 241 tracks and 114 vias.
It is built around the STM32L476RGT6, MCP73831T-2ACI/OT-HXY and MIC5365-3.3YD5-TR, with the 0402X7R104KT7AT, LMK107BJ475KA-T and MCS04020C5101FE000 among its other parts. Its parts include 15 capacitors, 8 resistors, 4 connectors, 3 ICs and 2 diodes. It belongs with the wearables boards and the STM32 boards of this library.
Main components
12
STM32L476RGT6
LQFP-64(10x10)-40℃~+85℃ 1.71V~3.6V 128KB 12bit 12bit 1MB 32 Bit 51 80MHz ARM Cortex-M4 Built-in FLASH LQFP-64(10x10) Microcontrollers (MCU/MPU/SOC) ROHSSTMicroelectronicsMicrocontrollers (MCU/MPU/SOC)
MCP73831T-2ACI/OT-HXY
SOT-23-5LBattery ManagementHXY MOSFETMIC5365-3.3YD5-TR
TSOT-23-5-40℃~+125℃@(Tj) 1 150mA 200uVrms 3.3V 310mV@(150mA) 39uA 5.5V 70dB@(1kHz) Fixed Over Current Protection、Over Temperature Protection、Enable Positive TSOT-23-5 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSMicrochip TechnologyVoltage Regulators - Linear, Low Drop Out (LDO) Regulators0402X7R104KT7AT
-UncategorisedKyocera AVX
LMK107BJ475KA-T
060310V 4.7uF X5R ±10% 0603 Multilayer Ceramic Capacitors MLCC - SMD/SMT ROHSTaiyo YudenMultilayer Ceramic Capacitors MLCC - SMD/SMT
MCS04020C5101FE000
0402-55℃~+155℃ 100mW 5.1kΩ 50V Thin Film Resistor ±1% ±50ppm/℃ 0402 Chip Resistor - Surface Mount ROHSVishay IntertechnologyChip Resistor - Surface MountCRCW04024K70FKEDC
0402-55℃~+155℃ 4.7kΩ 63mW Thick Film Resistor ±1% ±100ppm/℃ 0402 Chip Resistor - Surface Mount ROHSVishay IntertechnologyChip Resistor - Surface Mount
CRCW060310K0FKEAC
0603-55℃~+155℃ 100mW 10kΩ 75V Thick Film Resistor ±1% ±100ppm/℃ 0603 Chip Resistor - Surface Mount ROHSVishay IntertechnologyChip Resistor - Surface Mount
TMK212BBJ106KG8T
080510uF 25V X5R ±10% 0805 Multilayer Ceramic Capacitors MLCC - SMD/SMT ROHSTaiyo YudenMultilayer Ceramic Capacitors MLCC - SMD/SMT
ECS-2016MV-080-DN-TR
SMD2016-4PSMD2016-4P New Arrivals ROHSECSUncategorised
ZHCS350TA
SOD-5231 Independent 12uA@30V 350mA 4.2A 40V 810mV@350mA SOD-523 Schottky Diodes ROHSDiodes IncorporatedSchottky Diodes
S2B-PH-K-S-GW
弯插,P=2mm-25℃~+85℃ 1 100V 1x2P 2 2A 2P 2mm 4.8mm 5.9mm 7.6mm Brass K Pin PA66 PH Right Angle Tin UL94V-0 White 弯插,P=2mm Wire To Board Connector ROHSJSTWire To Board Connector
README
README.mdPulseWatch
A Smart Watch that uses the STM32L4
Schematic
Printed Circuit Board (PCB)
3D Model
Parts
37| Qty | Value | Footprint | References |
|---|---|---|---|
| 6 | 100n | Capacitor_SMD:C_0402_1005Metric | C2, C3, C4, C5, C6, C11 |
| 4 | 4u7 | Capacitor_SMD:C_0603_1608Metric | C1, C8, C9, C10 |
| 3 | 5k1 | Resistor_SMD:R_0402_1005Metric | R1, R2, R3 |
| 3 | Fiducial | Fiducial:Fiducial_0.75mm_Mask1.5mm | FM1, FM2, FM3 |
| 2 | 10p | Capacitor_SMD:C_0402_1005Metric | C14, C15 |
| 2 | 20p | Capacitor_SMD:C_0402_1005Metric | C12, C13 |
| 2 | 4k7 | Resistor_SMD:R_0402_1005Metric | R5, R6 |
| 1 | 10K | Resistor_SMD:R_0603_1608Metric | R7 |
| 1 | 10k | Resistor_SMD:R_0603_1608Metric | R4 |
| 1 | 10u | Capacitor_SMD:C_0805_2012Metric | C7 |
| 1 | 32KHz | Crystal:Crystal_SMD_EuroQuartz_EQ161-2Pin_3.2x1.5mm | X2 |
| 1 | 390R | Resistor_SMD:R_0603_1608Metric | R9 |
| 1 | 8MHz | Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm | X1 |
| 1 | Conn_01x11 | Connector_PinHeader_1.00mm:01x10_Conn_Hole | J4 |
| 1 | Conn_ARM_SWD_TagConnect_TC2030-NL | Connector:Tag-Connect_TC2030-IDC-NL_2x03_P1.27mm_Vertical | J3 |
| 1 | D_Schottky | Diode_SMD:D_SOD-523 | D1 |
| 1 | JST-PH-Conn | Health_Watch:CONN_S2B-PH-K-S_JST | J1 |
| 1 | MCP73831-2-OT | Package_TO_SOT_SMD:SOT-23-5 | U1 |
| 1 | MIC5365-3.3YD5 | Package_TO_SOT_SMD:SOT-23-5 | U2 |
| 1 | STM32L476RGTx | Package_QFP:LQFP-64_10x10mm_P0.5mm | U3 |
| 1 | TVS Diode | Diode_SMD:D_SOD-923 | D2 |
| 1 | USB_C_Receptacle_PowerOnly_6P | Connector_USB:USB_C_Receptacle_GCT_USB4125-xx-x_6P_TopMnt_Horizontal | J2 |
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Questions
How big is the Health Watch PCB?
It measures 40 × 30 mm and has 4 copper layers, 1.59 mm thick.
What parts does the Health Watch use?
37 parts, built around the STM32L476RGT6, MCP73831T-2ACI/OT-HXY, MIC5365-3.3YD5-TR and 0402X7R104KT7AT. 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 Health Watch KiCad files?
From the abendezu10/PulseWatch repository on GitHub, at the commit this page was made from: the board is KiCad/Health_Watch/Health_Watch.kicad_pcb and its schematic KiCad/Health_Watch/Health_Watch.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Health Watch design in my own project?
Its repository states no licence, so its author keeps all rights: ask abendezu10 before reusing the design.