4 layers117.5 × 30 mm
4 layers27.3 × 9.3 mm
Smartwatch
IldusV/smartwatch- Size
- 27.3 × 9.3 mm
- Copper layers
- 4
- Thickness
- 1 mm
- Parts
- 161
- Nets
- 153
- Pads
- 798
- Tracks, vias
- 1,938, 234
- Pours
- 3
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 26 May 2024
- Updated
- 27 Dec 2024
Overview
Smartwatch is an open-source printed circuit board by IldusV, from the IldusV/smartwatch repository on GitHub. It is a 4-layer board of 27.3 × 9.3 mm with 161 parts on 153 nets, routed with 1,938 tracks and 234 vias.
It is built around the ATTINY816-MN, RV1103G1 and MCP73871EV, with the W25N01KVZEIR, EA3036CQBR and QMI8658C among its other parts. Its parts include 59 capacitors, 52 resistors, 8 ICs, 8 diodes and 4 connectors. It belongs with the wearables boards and the AVR (ATmega, ATtiny) boards of this library.
Main components
9
ATTINY816-MN
QFN-20-EP(3x3)-40℃~+105℃ 1.8V~5.5V 10bit 128Byte 18 20MHz 512Byte 8 Bit 8KB 8bit AVR Built-in FLASH Power-on reset (POR)、Undervoltage detection (BOR/LVD/LVR/LVI)、Watchdog reset、Built-in general-purpose timer、Hardware CRC、Calendar function、Touch function、Window watchdog (WWDG) VQFN-20-EP(3x3) Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)
RV1103G1
QFN-88(9x9)QFN-88(9x9) Microcontrollers (MCU/MPU/SOC) ROHSRockchipMicrocontrollers (MCU/MPU/SOC)MCP73871EV
-ModulesMicrochip Technology
W25N01KVZEIR
WSON-8(8x6)-40℃~+85℃ 10 years 104MHz 10uA 1Gbit 2.7V~3.6V 2ms 60,000 Cycles 700us SPI Software reset function、ECC error correction function、OTP region write protection and lock function、Hardware write protection function、Write enable latch、Software write protection function、Hardware reset function Yes WSON-8(8x6) NAND FLASH ROHSWinbond ElecNAND FLASH
EA3036CQBR
WQFN-20-EP(3x3)WQFN-20-EP(3x3) Power Management - Specialized ROHSeveranalogPower Management - Specialized
QMI8658C
LGA-14-40℃~+85℃ 1.5KB 1.71V~3.6V 16bit IMU (accelerometer + gyroscope) SPI、I2C、I3C Synchronization and timestamp X,Y,Z X,Y,Z ±16g ±2048dps LGA-14 Accelerometers ROHSQSTAccelerometers
TXS0102DQER
X2-SON-8(1x1.4)-40℃~+85℃ 1 1.65V~3.6V 2 2.3V~5.5V 24Mbps Automatic direction detection、Output enable high-impedance、Integrated pull-up resistor Bidirectional Level translator Push-Pull、Open-drain SMBus、I2C、UART X2-SON-8(1x1.4) Translators, Level Shifters ROHSTexas InstrumentsTranslators, Level Shifters
DMG1012T
SOT-523-55℃~+150℃ 1 N-channel 1V 20V 280mW 300mΩ@4.5V、400mΩ@2.5V、500mΩ@1.8V 5.37pF 60.67pF 630mA 736.6pC@4.5V 9.68pF SOT-523 MOSFETs ROHSDiodes IncorporatedMOSFETs
BAT30F4
0201Schottky DiodesTECH PUBLIC
README
README.md- Download https://github.com/lvgl/lvgl library into the root directory of the smartwatch project
- Add fb_tft display driver into linux kerner directory for GC9A01A
- Add CST816S touchscreen driver into the kernel directory
- Configure Device Tree
Parts
161| Qty | Value | Footprint | References |
|---|---|---|---|
| 23 | 100nF | Capacitor_SMD:C_0201_0603Metric | C14, C16, C21, C25, C29, C30, C31, C33, C36, C41, C42, C43, C46, C47, C48, C49 +7 |
| 13 | 10uF | Capacitor_SMD:C_0402_1005Metric | C10, C11, C12, C13, C17, C18, C19, C23, C26, C27, C34, C38, C56 |
| 12 | TestPoint | ildus_footprints:TP | TP1, TP2, TP3, TP4, TP5, TP6, TP7, TP8, TP9, TP10, TP11, TP12 |
| 10 | 4.7uF | Capacitor_SMD:C_0201_0603Metric | C2, C3, C4, C5, C7, C8, C32, C37, C39, C40 |
| 10 | 47K | Resistor_SMD:R_0201_0603Metric | R3, R22, R23, R36, R37, R38, R39, R40, R42, R43 |
| 8 | 10K | Resistor_SMD:R_0201_0603Metric | R7, R8, R20, R26, R28, R30, R48, R52 |
| 7 | 100R | Resistor_SMD:R_0201_0603Metric | R10, R11, R12, R21, R31, R33, R50 |
| 6 | 100 | Resistor_SMD:R_0201_0603Metric | R24, R29, R34, R35, R49, R51 |
| 5 | 1uF | Capacitor_SMD:C_0201_0603Metric | C15, C20, C24, C28, C35 |
| 4 | 100K | Resistor_SMD:R_0201_0603Metric | R4, R6, R14, R32 |
| 4 | 18pF | Capacitor_SMD:C_0201_0603Metric | C44, C45, C60, C61 |
| 4 | 1K | Resistor_SMD:R_0201_0603Metric | R25, R27, R44, R47 |
| 3 | 1.5uH | Inductor_SMD:L_1008_2520Metric | L1, L2, L3 |
| 3 | 150R | Inductor_SMD:L_0402_1005Metric | FB1, FB2, FB3 |
| 3 | 220pF | Capacitor_SMD:C_0201_0603Metric | C1, C6, C9 |
| 3 | DMG1012T | Package_TO_SOT_SMD:SOT-523 | Q1, Q2, Q3 |
| 3 | SW_Push | ildus_footprints:SW_1.8x4.5x3.5 | SW1, SW2, SW3 |
| 2 | 200K | Resistor_SMD:R_0201_0603Metric | R5, R19 |
| 2 | 2K | Resistor_SMD:R_0201_0603Metric | R13, R41 |
| 2 | 470 | Resistor_SMD:R_0201_0603Metric | R15, R16 |
| 2 | BAT30F4 | Diode_SMD:D_0201_0603Metric | D6, D8 |
| 2 | LED | LED_SMD:LED_0402_1005Metric | D4, D5 |
| 1 | 0R | Resistor_SMD:R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R45 |
| 1 | 0R (DNP) | Resistor_SMD:R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R46 |
| 1 | 1M | Resistor_SMD:R_0201_0603Metric | R18 |
| 1 | 2.7nH | Inductor_SMD:L_0402_1005Metric | L4 |
| 1 | 22 | Resistor_SMD:R_0201_0603Metric | R17 |
| 1 | 22R | Resistor_SMD:R_0201_0603Metric | R9 |
| 1 | 24MHz | Crystal:Crystal_SMD_2016-4Pin_2.0x1.6mm | Y1 |
| 1 | 32.768Khz | Crystal:Crystal_SMD_2012-2Pin_2.0x1.2mm | Y2 |
| 1 | 4.7pF | Capacitor_SMD:C_0201_0603Metric | C58 |
| 1 | 40.2K | Resistor_SMD:R_0201_0603Metric | R2 |
| 1 | 9.1K | Resistor_SMD:R_0201_0603Metric | R1 |
| 1 | ATtiny816-M | Package_DFN_QFN:VQFN-20-1EP_3x3mm_P0.4mm_EP1.7x1.7mm | U7 |
| 1 | Antenna | ildus_footprints:5320_2.4Ghz_antenna | AE1 |
| 1 | BATT | ildus_footprints:JST_Aliexpress_KAN_shop_1x02-1MP_P0.80mm_Horizontal | J2 |
| 1 | Buzzer | ildus_footprints:MLT-5020_buzzer | BZ1 |
| 1 | CHRG | LED_SMD:LED_0402_1005Metric_Pad0.77x0.64mm_HandSolder | D2 |
| 1 | Conn_01x15 | ildus_footprints:Amphenol_1x15-1MP_P0.5mm_Horizontal | J3 |
| 1 | DONE | LED_SMD:LED_0402_1005Metric_Pad0.77x0.64mm_HandSolder | D3 |
| 1 | EA3036C | Package_DFN_QFN:QFN-20-1EP_3x3mm_P0.4mm_EP1.65x1.65mm | U2 |
| 1 | LOGO | ildus_footprints:OSHWLOGO0.3IN | G*** |
| 1 | MCP73871 | Package_DFN_QFN:QFN-20-1EP_4x4mm_P0.5mm_EP2.5x2.5mm | U3 |
| 1 | PG | LED_SMD:LED_0402_1005Metric_Pad0.77x0.64mm_HandSolder | D1 |
| 1 | PROGRAM | ildus_footprints:pinpad6 | J5 |
| 1 | QMI8658 | Package_LGA:Bosch_LGA-14_3x2.5mm_P0.5mm | U8 |
| 1 | RTL8723BS | ildus_footprints:QFN-44_12.64x12.64_Pitch0.9mm | U6 |
| 1 | RV1103 | ildus_footprints:QFN-88_EP_9x9_Pitch0.35mm | U1 |
| 1 | STAT | LED_SMD:LED_0402_1005Metric_Pad0.77x0.64mm_HandSolder | D7 |
| 1 | TXS0102DQE | Package_SON:X2SON-8_1.4x1mm_P0.35mm | U5 |
| 1 | USB_B_Micro | Connector_USB:USB_Micro-B_Molex_47346-0001 | J1 |
| 1 | W25N01KVZEIR | Package_SON:WSON-8-1EP_8x6mm_P1.27mm_EP3.4x4.3mm | U4 |
Questions
How big is the Smartwatch PCB?
It measures 27.3 × 9.3 mm and has 4 copper layers, 1 mm thick.
What parts does the Smartwatch use?
161 parts, built around the ATTINY816-MN, RV1103G1, MCP73871EV and W25N01KVZEIR. 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 IldusV/smartwatch repository on GitHub, at the commit this page was made from: the board is hardware/PCB/Smartwatch.kicad_pcb and its schematic hardware/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 IldusV before reusing the design.
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