# Open-Smartwatch-Light 3XZE ## Project Details - **Owner:** ryanf - **Created:** 7/24/2026 - **Last Updated:** 7/24/2026 - **Visibility:** Public ## Key Components ### D1 — LED_Green tJXH - Reference: D1 - Datasheet: ~ - Compliance: Green - Manufacturer Part Number: LED_Green - Footprint: LED_SMD:LED_0805_2012Metric - Value: LED_Green - Package or Case Code: 0805 - Part Type: Optoelectronic Devices **Pins:** - A [pin 2] - K [pin 1] ### J1 — Conn_01x02 2YPi - Value: Conn_01x02 - Datasheet: ~ - Footprint: Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical - Reference: J1 - Manufacturer Part Number: Conn_01x02 - Part Type: Connectors **Pins:** - Pin_1 [pin 1] - Pin_2 [pin 2] ### Q1 — 2N7002 n9pb - Part Type: Transistors - Value: 2N7002 - Manufacturer Name: ON Semiconductor - Package or Case Code: SOT-23 - Footprint: Package_TO_SOT_SMD:SOT-23 - Reference: Q1 - Datasheet URL: https://www.fairchildsemi.com/datasheets/2N/2N7002.pdf - Manufacturer Part Number: 2N7002 - Datasheet: https://www.fairchildsemi.com/datasheets/2N/2N7002.pdf **Pins:** - D [pin 3] - G [pin 1] - S [pin 2] ### SW1 — SW_Push 2GyN - Value: SW_Push - Reference: SW1 - Manufacturer Part Number: SW_Push - Part Type: Electromechanical Components - Datasheet: ~ - Footprint: open-Smartwatch:button_side_smd **Pins:** - 1 [pin 1] - 2 [pin 2] ### SW2 — SW_Push 2GyN - Part Type: Electromechanical Components - Value: SW_Push - Footprint: open-Smartwatch:button_side_smd - Manufacturer Part Number: SW_Push - Datasheet: ~ - Reference: SW2 **Pins:** - 1 [pin 1] - 2 [pin 2] ### SW4 — SW_Push 2GyN - Part Type: Electromechanical Components - Value: SW_Push - Reference: SW4 - Datasheet: ~ - Footprint: open-Smartwatch:button_side_smd - Manufacturer Part Number: SW_Push **Pins:** - 1 [pin 1] - 2 [pin 2] ### SW5 — SW_Push 2GyN - Value: SW_Push - Manufacturer Part Number: SW_Push - Reference: SW5 - Datasheet: ~ - Footprint: open-Smartwatch:button_side_smd - Part Type: Electromechanical Components **Pins:** - 1 [pin 1] - 2 [pin 2] ### U1 — DS3231MZ aLjk - Datasheet URL: http://datasheets.maximintegrated.com/en/ds/DS3231M.pdf - Value: DS3231MZ - Package or Case Code: 8-SOIC - Reference: U1 - Manufacturer Part Number: DS3231MZ - Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - Datasheet: http://datasheets.maximintegrated.com/en/ds/DS3231M.pdf - Part Type: Integrated Circuits **Pins:** - ~{INT}/SQW [pin 3] - ~{RST} [pin 4] - 32KHZ [pin 1] - GND [pin 5] - SCL [pin 8] - SDA [pin 7] - VBAT [pin 6] - VCC [pin 2] ### U10 — XC6209 tSYH - Manufacturer Part Number: XC6209 - Reference: U10 - Value: XC6209 - Part Type: Integrated Circuits - Package or Case Code: SOT-23-5 - Footprint: Package_TO_SOT_SMD:SOT-23-5 **Pins:** - CE [pin 3] - NC [pin 4] - VIN [pin 1] - VOUT [pin 5] - VSS [pin 2] ### U11 — MCP73831T-2ACI/OT j53U - Part Type: Integrated Circuits - MPN: MCP73831T-2ACI/OT - Footprint: open-Smartwatch:SOT-23-5 - Datasheet: http://ww1.microchip.com/downloads/en/DeviceDoc/20001984g.pdf - Manufacturer Part Number: MCP73831T-2ACI/OT - Package or Case Code: SOT-23-5 - Digi-Key Part Number: MCP73831T-2ACI/OTCT-ND - Value: MCP73831T-2ACI_OT - Reference: U11 - Datasheet URL: http://ww1.microchip.com/downloads/en/DeviceDoc/20001984g.pdf - Digi-Key_PN: MCP73831T-2ACI/OTCT-ND - Manufacturer: Microchip Technology - Manufacturer Name: Microchip **Pins:** - PROG [pin 5] - STAT [pin 1] - VBAT [pin 3] - VDD [pin 4] - VSS [pin 2] ### U13 — XC6209 tSYH - Part Type: Integrated Circuits - Value: XC6209 - Package or Case Code: SOT-23-5 - Footprint: Package_TO_SOT_SMD:SOT-23-5 - Manufacturer Part Number: XC6209 - Reference: U13 **Pins:** - CE [pin 3] - NC [pin 4] - VIN [pin 1] - VOUT [pin 5] - VSS [pin 2] ### U2 — BMA400 2SVW - Value: BMA400 - Manufacturer Name: Bosch Sensortec - Footprint: open-Smartwatch:LGA-12_2x2mm_P0.5mm - DigiKey_PN: 828-1081-1-ND - MPN: BMA400 - Datasheet: https://ae-bst.resource.bosch.com/media/_tech/media/datasheets/BST-BMA400-DS000.pdf - Part Type: Integrated Circuits - Manufacturer: Bosch Sensortec - Reference: U2 - Datasheet URL: https://ae-bst.resource.bosch.com/media/_tech/media/datasheets/BST-BMA400-DS000.pdf - Digi-Key Part Number: 828-1081-1-ND - Manufacturer Part Number: BMA400 **Pins:** - CSB [pin 10] - GND [pin 9] - GNDIO [pin 8] - INT1 [pin 5] - INT2 [pin 6] - NC [pin 4] - NC [pin 11] - SCX [pin 12] - SDO [pin 1] - SDX [pin 2] - VDD [pin 7] - VDDIO [pin 3] ### U4 — GC9A01_IPS_display 1RR4 - Value: GC9A01_IPS_display - Part Type: Integrated Circuits - Reference: U4 - Footprint: open-Smartwatch:GC9A01_IPS_display - Manufacturer Part Number: GC9A01_IPS_display **Pins:** - ~{CS} [pin 8] - ~{RESET} [pin 11] - D/C [pin 7] - GND [pin 1] - GND [pin 5] - GND [pin 6] - GND [pin 12] - LEDA [pin 3] - LEDK [pin 2] - SCK [pin 9] - SDI [pin 10] - VDD [pin 4] ### U5 — USB-OTG 2haT - Value: USB-OTG - Manufacturer Part Number: USB-OTG - Footprint: open-Smartwatch:USBmicro-B - Reference: U5 - Part Type: Integrated Circuits **Pins:** - D- [pin 4] - D+ [pin 3] - GND [pin 1] - ID [pin 2] - SHIELD [pin 6] - VBUS [pin 5] ### U6 — CH340E 7847 - Part Type: Integrated Circuits - Package or Case Code: 10-MSOP - Footprint: open-Smartwatch:MSOP-10_3x3mm_P0.5mm - Manufacturer Part Number: CH340E - Datasheet URL: https://www.mpja.com/download/35227cpdata.pdf - Reference: U6 - Value: CH340E - Datasheet: https://www.mpja.com/download/35227cpdata.pdf **Pins:** - ~{CTS} [pin 5] - ~{RTS} [pin 4] - GND [pin 3] - RXD [pin 9] - TNOW [pin 6] - TXD [pin 8] - UD- [pin 2] - UD+ [pin 1] - V3 [pin 10] - VCC [pin 7] ### U7 — ttgo-32-micro 1p1b - Value: ttgo-32-micro - Manufacturer Part Number: ttgo-32-micro - Footprint: open-Smartwatch:ttgo-32-micro - Reference: U7 - Part Type: Integrated Circuits **Pins:** - 3V3 [pin 2] - CLK [pin 20] - CS [pin 27] - EN [pin 3] - GND [pin 1] - GND [pin 15] - GND [pin 38] - IO00 [pin 25] - IO02 [pin 24] - IO04 [pin 26] - IO05 [pin 29] - IO09 [pin 17] - IO10 [pin 18] - IO12 [pin 14] - IO13 [pin 16] - IO14 [pin 13] - IO15 [pin 23] - IO18 [pin 30] - IO19 [pin 31] - IO21 [pin 33] - IO22 [pin 36] - IO23 [pin 37] - IO25 [pin 10] - IO26 [pin 11] - IO27 [pin 12] - IO32 [pin 8] - IO33 [pin 9] - IO34 [pin 6] - IO35 [pin 7] - NC [pin 32] - RX [pin 34] - SD0 [pin 28] - SD1 [pin 22] - SD2 [pin 19] - SD3 [pin 21] - TX [pin 35] - VN [pin 5] - VP [pin 4] ### U9 — TPS2115APWR 3kWV - Footprint: open-Smartwatch:TSSOP-8_4.4x3mm_P0.65mm - Datasheet URL: https://www.ti.com/lit/ds/symlink/tps2114a.pdf?HQS=TI-null-null-digikeymode-df-pf-null-wwe&ts=1599026024238 - Value: TPS2115A - Manufacturer Part Number: TPS2115APWR - Manufacturer: Texas Instruments - MPN: TPS2115APWR - Datasheet: https://www.ti.com/lit/ds/symlink/tps2114a.pdf?HQS=TI-null-null-digikeymode-df-pf-null-wwe&ts=1599026024238 - Digi-Key Part Number: 296-16940-1-ND - Package or Case Code: 8-TSSOP - DigiKey_PN: 296-16940-1-ND - Manufacturer Name: Texas Instruments - Part Type: Integrated Circuits - Reference: U9 **Pins:** - D0 [pin 2] - D1 [pin 3] - GND [pin 5] - ILIM [pin 4] - IN1 [pin 8] - IN2 [pin 6] - OUT [pin 7] - STAT [pin 1] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/ryanf/open-smartwatch-light-3xze](https://www.flux.ai/ryanf/open-smartwatch-light-3xze).* --- *Generated from [https://www.flux.ai/ryanf/open-smartwatch-light-3xze](https://www.flux.ai/ryanf/open-smartwatch-light-3xze)*