2 layers69.5 × 46.5 mm
6 layers38.1 × 38.1 mm
SmartWatch
evgenu/EyeWatch- Size
- 38.1 × 38.1 mm
- Copper layers
- 6
- Thickness
- 1.6 mm
- Parts
- 78
- Nets
- 120
- Pads
- 472
- Tracks, vias
- 82, 0
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 22 Dec 2021
- Updated
- 9 Mar 2022
Overview
SmartWatch is an open-source printed circuit board by evgenu, from the evgenu/EyeWatch repository on GitHub. It is a 6-layer board of 38.1 × 38.1 mm with 78 parts on 120 nets, routed with 82 tracks and 0 vias.
It is built around the ATMEGA328P-MMH, DA14683-00000A92 and 6PAIC3109TWRHMRQ1, with the MAX30100EFD+T, W25Q128JVSIQ and MC3630 among its other parts. Its parts include 32 capacitors, 18 resistors, 8 ICs, 4 connectors and 3 switches. It belongs with the wearables boards and the AVR (ATmega, ATtiny) boards of this library.
Main components
10ATMEGA328P-MMH
VQFN-28-EP(5x5)-40℃~+85℃ 1.8V~5.5V 1KB 20MHz 23 2KB 32KB 8 Bit AVR Built-in FLASH VQFN-28-EP(5x5) Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontroller Units (MCUs/MPUs/SOCs)
DA14683-00000A92
AQFN-60-EP(6x6)AQFN-60-EP(6x6) RF Transceiver ICs ROHSRenesas ElectronicsRF Transceiver ICs6PAIC3109TWRHMRQ1
VQFN-32(5x5)-40℃~+105℃ 1.1V~3.6V、1.525V~1.95V、2.7V~3.6V 8kHz~96kHz Encoder/decoder I2C VQFN-32(5x5) Audio Interface ICs ROHSTexas InstrumentsAudio Interface ICsMAX30100EFD+T
OESIP-14Integrated ambient light cancellation (ALC)、Built-in temperature sensor OESIP-14 Specialized Sensors ROHSMaxim Integrated (Analog Devices)Specialized Sensors
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
MC3630
VLGA-12(2x2)-40℃~+85℃ 1.7V~3.6V Motion event detection VLGA-12(2x2) Accelerometers ROHSMEMSICAccelerometers
SPG08P4HM4H-1
LGA-6(4.0x2.0)-26dB -40℃~+100℃ 1.1mm 1.4mA 1.8V 2mm 4mm 64dB Differential output Omnidirectional Omnidirectional pickup LGA-6(4.0x2.0) MEMS Microphones ROHSKnowlesMEMS Microphones
ECH8693R-TL-W
SOT-28FL1.3V 1.4W 13nC@4.5V 14A 2 N-Channel 24V 7mΩ@4.5V Common Drain N-Channel SOT-28FL MOSFETs ROHSonsemiMOSFETs
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)SMS-1508MS-HT-R
--40℃~+105℃ 15mm 15mm 400Hz~10kHz 4mm 800Hz 800mW 8Ω Electromagnetic - Speakers ROHSPUI Audio, Inc.Speakers
README
README.mdEyeWatch
Parts
78| Qty | Value | Footprint | References |
|---|---|---|---|
| 8 | 10uF | Capacitor_SMD:C_01005_0402Metric | C14, C15, C17, C23, C25, C28, C29, C30 |
| 6 | 10K | Resistor_SMD:R_01005_0402Metric | R6, R8, R12, R13, R14, R15 |
| 5 | 0.1uF | Capacitor_SMD:C_01005_0402Metric | C24, C26, C27, C31, C32 |
| 5 | 100nF | Capacitor_SMD:C_01005_0402Metric | C1, C3, C6, C7, C18 |
| 4 | 4.7uF | Capacitor_SMD:C_01005_0402Metric | C8, C12, C13, C16 |
| 3 | 10nF | Capacitor_SMD:C_01005_0402Metric | C2, C19, C20 |
| 3 | 1uF | Capacitor_SMD:C_01005_0402Metric | C9, C10, C11 |
| 3 | 3.3K | Resistor_SMD:R_01005_0402Metric | R16, R17, R18 |
| 2 | 16Mhz | Crystal:Crystal_SMD_HC49-SD | Y1, Y2 |
| 2 | 22pF | Capacitor_SMD:C_01005_0402Metric | C4, C5 |
| 2 | 330 | Resistor_SMD:R_01005_0402Metric | R3, R7 |
| 2 | 4.7K | Resistor_SMD:R_01005_0402Metric | R9, R10 |
| 2 | 470nH | Inductor_SMD:L_0402_1005Metric | L1, L2 |
| 2 | 5.1M | Resistor_SMD:R_01005_0402Metric | R1, R2 |
| 2 | C | Capacitor_SMD:C_01005_0402Metric | C21, C22 |
| 2 | ECH8693R-TL-W | SamacSys_Parts:SOTFL65P280X95-8N | Q1, Q2 |
| 1 | 0.39 | Resistor_SMD:R_01005_0402Metric | R4 |
| 1 | 100m | Resistor_SMD:R_01005_0402Metric | R11 |
| 1 | 2.2K | Resistor_SMD:R_01005_0402Metric | R5 |
| 1 | 32.768Mhz | Crystal:Crystal_SMD_HC49-SD | Y3 |
| 1 | 6PAIC3109TWRHMRQ1 | SamacSys_Parts:QFN50P500X500X90-33N-D | IC1 |
| 1 | ARD_PROG_CONN | Connector_PinHeader_1.00mm:PinHeader_1x04_P1.00mm_Vertical_SMD_Pin1Left | J3 |
| 1 | ATmega328P-MMH | Package_DFN_QFN:QFN-28-1EP_4x4mm_P0.45mm_EP2.4x2.4mm | U2 |
| 1 | Adafruit 4520 | Connector_FFC-FPC:Hirose_FH12-24S-0.5SH_1x24-1MP_P0.50mm_Horizontal | J4 |
| 1 | Antenna | RF_Antenna:Texas_SWRA117D_2.4GHz_Left | AE1 |
| 1 | BQ29700DSER | Package_SON:WSON-6_1.5x1.5mm_P0.5mm | U1 |
| 1 | CHOOSE | Button_Switch_THT:SW_Tactile_SPST_Angled_PTS645Vx58-2LFS | SW2 |
| 1 | Charging Port | Connector_PinHeader_1.00mm:PinHeader_1x02_P1.00mm_Vertical | J1 |
| 1 | DA14683-00000A92 | DA14683-00000A92:XCVR_DA14680-01F08A92 | U5 |
| 1 | DA_PROG_CONN | Connector_PinHeader_1.00mm:PinHeader_1x07_P1.00mm_Vertical_SMD_Pin1Left | J2 |
| 1 | DOWN | Button_Switch_THT:SW_Tactile_SPST_Angled_PTS645Vx58-2LFS | SW3 |
| 1 | ESD9B5.0ST5G | Diode_SMD:D_SOD-923 | D1 |
| 1 | Jumper | Jumper:SolderJumper-2_P1.3mm_Bridged2Bar_Pad1.0x1.5mm | JP1 |
| 1 | MAX30100EFD+T | MAX30100:MAX30100EFD&plus_ | U4 |
| 1 | MC3630 | SamacSys_Parts:MC3630 | IC3 |
| 1 | RJD2430C1ST1 | Connector_PinHeader_1.00mm:PinHeader_1x02_P1.00mm_Vertical | BT1 |
| 1 | SMS-1508MS-HT-R | SamacSys_Parts:SMS1508MSHTR | LS1 |
| 1 | SPG08P4HM4H-1 | SamacSys_Parts:SPG08P4HM4H1 | IC2 |
| 1 | UP | Button_Switch_THT:SW_Tactile_SPST_Angled_PTS645Vx58-2LFS | SW1 |
| 1 | W25Q128JVSIQ | Package_SO:SOIC-8_5.23x5.23mm_P1.27mm | U3 |
| 1 | c0720b001f | Connector_PinHeader_1.00mm:PinHeader_1x02_P1.00mm_Vertical | M1 |
Questions
How big is the SmartWatch PCB?
It measures 38.1 × 38.1 mm and has 6 copper layers, 1.6 mm thick.
What parts does the SmartWatch use?
78 parts, built around the ATMEGA328P-MMH, DA14683-00000A92, 6PAIC3109TWRHMRQ1 and MAX30100EFD+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 SmartWatch KiCad files?
From the evgenu/EyeWatch repository on GitHub, at the commit this page was made from: the board is Hardware/SmartWatch/SmartWatch.kicad_pcb. 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 evgenu before reusing the design.
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