6 layers41.8 × 42 mm
4 layers
Watch pcb
dezash123/watchCircuit board for my custom smartwatch!!!!!
- Copper layers
- 4
- Thickness
- 1.61 mm
- Parts
- 191
- Nets
- 174
- Pads
- 825
- Tracks, vias
- 279, 95
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 4 Jul 2024
- Updated
- 8 Mar 2025
Overview
Watch pcb is an open-source printed circuit board by dezash123, from the dezash123/watch repository on GitHub, published under the Apache-2.0 licence. It is a 4-layer board with 191 parts on 174 nets, routed with 279 tracks and 95 vias.
It is built around the ESP32-S3, LIS3MDL and MAX30102, with the MX25LM51245GXDI00, APS12808L-3OBMX-BA and LSM6DSV16XTR among its other parts. Its parts include 79 capacitors, 55 resistors, 15 diodes, 14 ICs and 8 inductors. It belongs with the wearables boards and the ESP32 boards of this library.
Main components
11
ESP32-S3
QFN-56-EP(7x7)-40℃~+105℃ -98.4dBm 150Mbps 2.412GHz~2.484GHz 2.4GHz 21dBm 340mA 3V~3.6V 88mA SPI、USB、UART、ADC、I2C、I2S、PWM WiFi transceiver QFN-56-EP(7x7) RF Transceiver ICs ROHSEspressif SystemsRF Transceiver ICs
LIS3MDL
LGA-12(2x2)-40℃~+85℃ 1.9V~3.6V 16bit 1uA、40uA、270uA I2C、SPI ±1.6mT、±1.2mT、±8Gs、±4Gs ±1.6mT、±1.2mT、±8Gs、±4Gs LGA-12(2x2) 3D Magnetic Sensors ROHSSTMicroelectronics3D Magnetic Sensors
MAX30102
-Integrated ambient light cancellation (ALC)、Built-in temperature sensor、With proximity detection function - Heart Rate Sensors ROHSAnalog DevicesHeart Rate Sensors
MX25LM51245GXDI00
CSPBGA-24(6x8)-40℃~+85℃ 100,000 cycles 133MHz 150us 2.7V~3.6V 20 Years 512Mbit SPI CSPBGA-24(6x8) NOR FLASH ROHSMXICNOR FLASH
APS12808L-3OBMX-BA
BGA-24_6X8BGA-24_6X8 New Arrivals ROHSAP MemoryUncategorised
LSM6DSV16XTR
LGA-14-40℃~+85℃ 1.71V~3.6V 2.6uA 4.5KB IMU (accelerometer + gyroscope) SPI、I2C X,Y,Z X,Y,Z ±16g ±4000dps 运动事件检测、同步与时间戳 LGA-14(2.5x3) Accelerometers ROHSSTMicroelectronicsAccelerometersTPS63021
UncategorisedTexas Instruments
ESD9B3.3ST5G
SOD-923(0402)ESD And Surge Protection (TVS/ESD)TECH PUBLIC
MMBT3904
SOT-23-55℃~+150℃ 1 NPN 100 100nA 200mA 200mW 300MHz 300mV 40V 6V NPN SOT-23 Bipolar (BJT) ROHSJiangsu Changjing Electronics Technology (CJ)Bipolar (BJT)ESD9B5.0ST5G
SOD-923(0402)-55℃~+125℃ 1 10V 15pF 5V 8.4V 80W@8/20us 80nA 8A@8/20us Bidirectional ESD IEC 61000-4-2、IEC 61000-4-5 SOD-923(0402) ESD and Surge Protection (TVS/ESD) ROHSTECH PUBLICESD And Surge Protection (TVS/ESD)
ICS-43434
LGA-6(3.5x2.7)-26dB -40℃~+85℃ 0.98mm 1.65V~3.63V 2.65mm 3.5mm 550uA 64dB I2S Omnidirectional Omnidirectional pickup LGA-6(3.5x2.7) MEMS Microphones ROHSTDK InvenSenseMEMS Microphones
README
README.mdParts
191| Qty | Value | Footprint | References |
|---|---|---|---|
| 26 | 100nF | Capacitor_SMD:C_0402_1005Metric | C12, C30, C32, C35, C37, C38, C39, C46, C48, C50, C51, C54, C57, C60, C61, C65 +10 |
| 24 | 10k | Resistor_SMD:R_0402_1005Metric | R1, R2, R4, R5, R10, R19, R24, R25, R31, R32, R40, R46, R47, R48, R49, R50 +8 |
| 17 | 1uF | Capacitor_SMD:C_0402_1005Metric | C11, C18, C26, C31, C33, C34, C40, C47, C53, C56, C59, C64, C66, C69, C70, C75 +1 |
| 14 | 0 | Resistor_SMD:R_0402_1005Metric | R20, R21, R28, R29, R34, R35, R36, R37, R38, R41, R42, R43, R44, R45 |
| 11 | 10uF | Capacitor_SMD:C_0402_1005Metric | C6, C13, C19, C43, C44, C45, C49, C52, C55, C62, C63 |
| 7 | ESD9B3.3ST5G | Diode_SMD:D_SOD-923 | D8, D9, D10, D11, D12, D13, D14 |
| 6 | 22uF | Capacitor_SMD:C_0603_1608Metric | C7, C8, C10, C14, C16, C17 |
| 6 | MMBT3904 | Package_TO_SOT_SMD:SOT-23 | Q1, Q2, Q3, Q4, Q5, Q6 |
| 4 | 10uF | Capacitor_SMD:C_0603_1608Metric | C1, C2, C23, C24 |
| 4 | 4.7uF | Capacitor_SMD:C_0402_1005Metric | C3, C20, C21, C58 |
| 4 | C | Capacitor_SMD:C_0402_1005Metric | C27, C28, C41, C42 |
| 4 | ESD9B5.0ST5G | Diode_SMD:D_SOD-923 | D2, D3, D4, D5 |
| 2 | 1.5pF | Capacitor_SMD:C_0201_0603Metric | C25, C29 |
| 2 | 10nF | Capacitor_SMD:C_0402_1005Metric | C5, C36 |
| 2 | 10uH | Inductor_SMD:L_1008_2520Metric | L7, L8 |
| 2 | 1M | Resistor_SMD:R_0402_1005Metric | R14, R15 |
| 2 | 1uH | Inductor_SMD:L_1206_3216Metric | L2, L3 |
| 2 | 5.1k | Resistor_SMD:R_0402_1005Metric | R11, R12 |
| 2 | ICS-43434 | Sensor_Audio:InvenSense_ICS-43434-6_3.5x2.65mm | MK1, MK2 |
| 2 | R | Resistor_SMD:R_0402_1005Metric | R3, R55 |
| 1 | 1.5uH | custom-lib:XFL4020-152ME | L1 |
| 1 | 100nF | Capacitor_SMD:C_0603_1608Metric | C4 |
| 1 | 103AT-2 10k | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P2.54mm_Vertical | TH1 |
| 1 | 180k | Resistor_SMD:R_0402_1005Metric | R13 |
| 1 | 1k | Resistor_SMD:R_0402_1005Metric | R18 |
| 1 | 2.2uF | Capacitor_SMD:C_0402_1005Metric | C15 |
| 1 | 2.7nH | Inductor_SMD:L_0201_0603Metric | L4 |
| 1 | 22.1k | Resistor_SMD:R_0402_1005Metric | R16 |
| 1 | 2222 | Resistor_SMD:R_0402_1005Metric | R23 |
| 1 | 24nH | Inductor_SMD:L_Coilcraft_XFL2010 | L6 |
| 1 | 2nH | Inductor_SMD:L_0805_2012Metric | L5 |
| 1 | 30.31 | Resistor_SMD:R_0402_1005Metric | R22 |
| 1 | 32.768kHz | Crystal:Crystal_SMD_3215-2Pin_3.2x1.5mm | Y1 |
| 1 | 33k | Resistor_SMD:R_0402_1005Metric | R30 |
| 1 | 40MHz(10ppm) | Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm | Y2 |
| 1 | 47.5k | Resistor_SMD:R_0402_1005Metric | R17 |
| 1 | 47nF | Capacitor_SMD:C_0402_1005Metric | C22 |
| 1 | 499 | Resistor_SMD:R_0402_1005Metric | R33 |
| 1 | 5.24k | Resistor_SMD:R_0402_1005Metric | R26 |
| 1 | 6666 | Resistor_SMD:R_0402_1005Metric | R27 |
| 1 | ADP2108AUJ-1.8 | Package_TO_SOT_SMD:TSOT-23-5 | U1 |
| 1 | APS12808L-3OBMx | custom-lib:BGA-24_6.0x8.0mm_Layout5x5_P1.0mm | U8 |
| 1 | BQ25638 | custom-lib:Texas_DSBGA-30_2.0x2.4mm_Layout5x6_P0.4mm | U5 |
| 1 | BQ27427YZFR | Package_BGA:Texas_DSBGA-9_1.4715x1.4715mm_Layout3x3_P0.5mm | U4 |
| 1 | Battery | custom-lib:Battery_Connector | BT1 |
| 1 | CHARGING | LED_SMD:LED_0402_1005Metric | D6 |
| 1 | CP2102N-Axx-xQFN28 | Package_DFN_QFN:QFN-28-1EP_5x5mm_P0.5mm_EP3.35x3.35mm | U3 |
| 1 | DAUGHTER | Connector_FFC-FPC:TE_1-1734839-2_1x12-1MP_P0.5mm_Horizontal | J1 |
| 1 | DRV2605LYZFR | Package_BGA:Texas_DSBGA-9_1.4715x1.4715mm_Layout3x3_P0.5mm | U12 |
| 1 | ELV1411A | custom-lib:ELV1411A | J5 |
| 1 | ESP32-S3 | Package_DFN_QFN:QFN-56-1EP_7x7mm_P0.4mm_EP4x4mm_ThermalVias | U6 |
| 1 | ESP_ANT | Connector_Coaxial:U.FL_Molex_MCRF_73412-0110_Vertical | J3 |
| 1 | LIS3MDL | Package_LGA:LGA-12_2x2mm_P0.5mm | U14 |
| 1 | LSM6DSV16XTR | Package_LGA:LGA-14_3x2.5mm_P0.5mm_LayoutBorder3x4y | U13 |
| 1 | MAX30102 | OptoDevice:Maxim_OLGA-14_3.3x5.6mm_P0.8mm | U10 |
| 1 | MTP_PWR | TestPoint:TestPoint_Pad_D1.0mm | TP1 |
| 1 | MX25LM51245GXDI00 | custom-lib:BGA-24_6.0x8.0mm_Layout5x5_P1.0mm | U7 |
| 1 | Micro_SD_Card | Connector_Card:microSD_HC_Hirose_DM3D-SF | J4 |
| 1 | POWER GOOD | LED_SMD:LED_0402_1005Metric | D7 |
| 1 | R | PCM_Resistor_SMD_AKL:R_0402_1005Metric | R39 |
| 1 | RESET=LOW | Jumper:SolderJumper-2_P1.3mm_Open_RoundedPad1.0x1.5mm | JP1 |
| 1 | STATUS0 | LED_SMD:LED_0402_1005Metric | D15 |
| 1 | STATUS1 | LED_SMD:LED_0402_1005Metric | D1 |
| 1 | TCA9535MRGER | Package_DFN_QFN:VQFN-24-1EP_4x4mm_P0.5mm_EP2.45x2.45mm | U9 |
| 1 | TPS63021 | custom-lib:Texas_VSON-14_3x4mm_ThermalPad | U2 |
| 1 | TPS65631W | Package_SON:WSON-10-1EP_2.5x2.5mm_P0.5mm_EP1.2x2mm_ThermalVias | U11 |
| 1 | TT143AMC12C | custom-lib:OK-14GF024-04 | J6 |
| 1 | USB_C_Receptacle | Connector_USB:USB_C_Receptacle_GCT_USB4105-xx-A_16P_TopMnt_Horizontal | J2 |
Questions
What parts does the Watch pcb use?
191 parts, built around the ESP32-S3, LIS3MDL, MAX30102 and MX25LM51245GXDI00. 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 Watch pcb KiCad files?
From the dezash123/watch repository on GitHub, at the commit this page was made from: the board is pcb/watch-pcb.kicad_pcb and its schematic pcb/daughter-board/daughter-board.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Watch pcb design in my own project?
Its repository publishes it under the Apache-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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