2 layers33.8 × 46 mm
2 layers38.7 × 50.6 mm
SmartWatch
PierceMckinnon/SmartWatch1PCB + SW to make a functional smartwatch
- Size
- 38.7 × 50.6 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 89
- Nets
- 95
- Pads
- 340
- Tracks, vias
- 1,148, 93
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 6 (file 20211014)
- Created
- 19 Apr 2023
- Updated
- 19 Apr 2023
Overview
SmartWatch is an open-source printed circuit board by PierceMckinnon, from the PierceMckinnon/SmartWatch repository on GitHub. It is a 2-layer board of 38.7 × 50.6 mm with 89 parts on 95 nets, routed with 1,148 tracks and 93 vias.
It is built around the CP2102-GMR, NRF52832-QFAA-R and W25Q128JVSIQ, with the AMS1117, TP4054 and MBR0530 among its other parts. Its parts include 33 capacitors, 16 resistors, 7 diodes, 6 ICs and 5 switches. It belongs with the wearables boards and the nRF52 and nRF5x boards of this library.
Main components
11
CP2102-GMR
WQFN-28-EP(5x5)-40℃~+85℃ 1Mbps 20mA 3V~3.6V 80uA Transceiver USB 2.0 WQFN-28-EP(5x5) USB Converters ROHSSilicon LabsUSB Converters
NRF52832-QFAA-R
QFN-48-EP(6x6)-40℃~+85℃ -96dBm 1.7V~3.6V 2.4GHz 2Mbps 4dBm 5.3mA 5.4mA Bluetooth SPI、UART、I2C transceiver QFN-48-EP(6x6) RF Transceiver ICs ROHSNORDICRF Transceiver ICs
W25Q128JVSIQ
SOIC-8-208mil-40℃~+85℃ 100,000 cycles 120ms@(32KB) 128Mbit 133MHz 1uA 2.7V~3.6V 20 Years 3ms Power-on reset、Hardware write protection、Software write protection、Write enable latch、Absolute write protection SPI SOIC-8-208mil NOR FLASH ROHSWinbondNOR FLASH
AMS1117
1.0 A Low-Dropout Fixed RegulatorAdvanced Monolithic SystemsUncategorised
TP4054
SOT-23-5L-40℃~+85℃ 1 25uA 4.2V 4.2V~6.5V 500mA Charging IC Lithium Battery Not supported 恒流充电、恒压充电、涓流充电、自动再充电、充电终止、可编程充电电流、软启动、欠压锁定 SOT-23-5L Battery Management ROHSUMWBattery Management
MBR0530
SOD-1231 Independent 30V 5.5A 500mA 550mV@500mA 80uA@30V SOD-123 Schottky Diodes ROHSJiangsu Changjing Electronics Technology (CJ)Schottky Diodes
10118193-0001LF
SMD-55℃~+85℃ 1 1.8A 100V 5P Black Female Micro-B Surface Mount, Right Angle USB 2.0 SMD USB Connectors ROHSAmphenolUSB Connectors
AO3400A
SOT-23-55℃~+150℃ 1 N-channel 1.45V 1.4W 30V 48mΩ@2.5V 5.7A 50pF 630pF 75pF 7nC@10V N-Channel SOT-23 MOSFETs ROHSAlpha & Omega SemiconductorMOSFETsAO3401A
SOT-231 P-Channel 14nC@10V 30V 47mΩ@10V、60mΩ@4.5V、85mΩ@2.5V 4A 55pF 645pF 80pF 900mV SOT-23 MOSFETs ROHSAlpha & Omega SemiconductorMOSFETsS8050
SOT-23-55℃~+150℃ 1 NPN 100MHz 100nA 120 25V 300mW 500mA 5V 600mV NPN SOT-23 Bipolar (BJT) ROHShongjiachengBipolar (BJT)VC1020B111F
--20℃~+60℃ 13500rpm 3V Eccentric Rotating Mass (ERM) - Vibration Motors ROHSJinlong MachineryVibration Motors
Parts
89| Qty | Value | Footprint | References |
|---|---|---|---|
| 9 | 1uF/50V | Capacitor_SMD:C_0603_1608Metric | C5, C6, C7, C11, C12, C13, C14, C15, C16 |
| 8 | 10K | Resistor_SMD:R_0402_1005Metric | R1, R2, R3, R4, R5, R7, R8, R18 |
| 5 | 100nf | Capacitor_SMD:C_0402_1005Metric | C19, C20, C21, C31, C32 |
| 5 | MBR0530 | Diode_SMD:D_SOD-123 | D1, D3, D4, D5, D7 |
| 4 | 12pF | Capacitor_SMD:C_0402_1005Metric | C24, C25, C26, C27 |
| 4 | MountingHole_Pad | MountingHole:MountingHole_2.2mm_M2_Pad | H1, H2, H3, H4 |
| 4 | Tactile_Button | Button_Switch_SMD:SW_SPST_EVQP7A | S1, S2, S3, S4 |
| 3 | 1uF | Capacitor_SMD:C_0603_1608Metric | C2, C10, C28 |
| 2 | 100K | Resistor_SMD:R_0402_1005Metric | R11, R17 |
| 2 | 100nF | Capacitor_SMD:C_0603_1608Metric | C29, C30 |
| 2 | 100nf | Capacitor_SMD:C_0603_1608Metric | C1, C3 |
| 2 | 4.7uF/50V | Capacitor_SMD:C_0805_2012Metric | C8, C9 |
| 1 | 0.8pF | Capacitor_SMD:C_0402_1005Metric | C23 |
| 1 | 1.0uf | Capacitor_SMD:C_0603_1608Metric | C17 |
| 1 | 1.5pF | Capacitor_SMD:C_0402_1005Metric | C34 |
| 1 | 100pF | Capacitor_SMD:C_0402_1005Metric | C18 |
| 1 | 10118193-0001LF | 10118193-0001LF:FCI_10118193-0001LF | J2 |
| 1 | 10k | Resistor_SMD:R_0402_1005Metric | R13 |
| 1 | 10uH/1A | Inductor_SMD:L_0805_2012Metric | L1 |
| 1 | 18k | Resistor_SMD:R_0402_1005Metric | R15 |
| 1 | 1K | Resistor_SMD:R_0402_1005Metric | R16 |
| 1 | 22uf | Capacitor_SMD:C_0805_2012Metric | C4 |
| 1 | 2k | Resistor_SMD:R_0402_1005Metric | R12 |
| 1 | 3 | Resistor_SMD:R_0402_1005Metric | R6 |
| 1 | 3.3V | TestPoint:TestPoint_Pad_D1.0mm | TP3 |
| 1 | 3.9nH | Inductor_SMD:L_0402_1005Metric | L2 |
| 1 | 32.768kHz | Crystal:Crystal_SMD_3215-2Pin_3.2x1.5mm | Y2 |
| 1 | 32MHz | Crystal:Crystal_SMD_2016-4Pin_2.0x1.6mm | Y1 |
| 1 | 4.7uF | Capacitor_SMD:C_0603_1608Metric | C22 |
| 1 | 750 | Resistor_SMD:R_0603_1608Metric | R14 |
| 1 | AMS1117 | Package_TO_SOT_SMD:SOT-223 | U3 |
| 1 | ANT | TestPoint:TestPoint_Pad_D1.0mm | TP5 |
| 1 | AO3400A | Package_TO_SOT_SMD:SOT-23 | Q1 |
| 1 | AO3401A | Package_TO_SOT_SMD:SOT-23 | Q3 |
| 1 | Antenna | PersonalAntenna:Antenna | AE1 |
| 1 | BATT | TestPoint:TestPoint_Pad_D1.0mm | TP1 |
| 1 | Conn_01x02 | Connector_JST:JST_PH_S2B-PH-K_1x02_P2.00mm_Horizontal | J1 |
| 1 | FPC24(0.5mm) | Connector_FFC-FPC:TE_2-1734839-4_1x24-1MP_P0.5mm_Horizontal | J4 |
| 1 | GREEN | LED_SMD:LED_0603_1608Metric | D6 |
| 1 | INTERFACE-CP2102-GMR(QFN28) | INTERFACE-CP2102-GMR_QFN28_:QFN28G_0.5-5X5MM | U4 |
| 1 | LIS2DH12TR | Package_LGA:LGA-12_2x2mm_P0.5mm | U6 |
| 1 | NRF52832-QFAA-R | Package_DFN_QFN:QFN-48-1EP_6x6mm_P0.4mm_EP4.6x4.6mm | U1 |
| 1 | RED | LED_SMD:LED_0603_1608Metric | D2 |
| 1 | S8050 | Package_TO_SOT_SMD:SOT-23 | Q2 |
| 1 | SWD Connector | Connector_PinHeader_2.54mm:PinHeader_2x05_P2.54mm_Vertical | J3 |
| 1 | SW_Push | Button_Switch_SMD:SW_SPST_PTS810 | SW1 |
| 1 | TP4054 | Package_TO_SOT_SMD:SOT-23-5 | U2 |
| 1 | USB | TestPoint:TestPoint_Pad_D1.0mm | TP2 |
| 1 | VC1020B111F | Connector_PinHeader_1.27mm:PinHeader_1x02_P1.27mm_Vertical | M1 |
| 1 | VREG_IN | TestPoint:TestPoint_Pad_D1.0mm | TP4 |
| 1 | W25Q128JVSIQ | Package_SO:SOIC-8_5.275x5.275mm_P1.27mm | U5 |
Questions
How big is the SmartWatch PCB?
It measures 38.7 × 50.6 mm and has 2 copper layers, 1.6 mm thick.
What parts does the SmartWatch use?
89 parts, built around the CP2102-GMR, NRF52832-QFAA-R, W25Q128JVSIQ and AMS1117. 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 SmartWatch KiCad files?
From the PierceMckinnon/SmartWatch repository on GitHub, at the commit this page was made from: the board is PCB/SmartWatch.kicad_pcb and its schematic PCB/SmartWatch.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the SmartWatch design in my own project?
Its repository states no licence, so its author keeps all rights: ask PierceMckinnon before reusing the design.
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