# WINO Child Safety Wearable ## Description Compact 60 mm x 40 mm child safety wearable PCB with ESP32-S3, SIM800L GSM, NEO-6M GPS, MPU-6050, MAX30102, USB-C charging/programming, LiPo battery input, and test-pointed I2C/UART power rails. Target layout is 2-layer with all components on top, bottom ground plane, short direct I2C/UART routing, and GSM placement isolated from GPS and sensor sections. ## Project Details - **Owner:** sidalib - **Created:** 4/14/2026 - **Last Updated:** 4/14/2026 - **Visibility:** Public ## Key Components ### D1 — [USBLC6-2P6](https://www.flux.ai/kicad-part-library/usblc6-2p6.md) - Role: USB ESD Protection - Package: SOT-666 - Manufacturer Part Number: USBLC6-2P6 - Role Details: Low-capacitance ESD array for USB2 D+ and D- placed at USB-C connector - Datasheet URL: https://www.st.com/resource/en/datasheet/usblc6-2.pdf - Package or Case Code: SOT-666 - Manufacturer Name: Texas Instruments Inc. **Pins:** - GND [pin 2] - I/O1 [pin 1] - I/O1 [pin 6] - I/O2 [pin 3] - I/O2 [pin 4] - VBUS [pin 5] ### D2 — [USBLC6-2SC6](https://www.flux.ai/cherepanyadima/usblc6-2sc6.md) - Manufacturer Part Number: USBLC6-2SC6 - Role Details: TVS protection for USB VBUS input near USB-C connector - Role: VBUS TVS Protection - Datasheet URL: https://www.st.com/resource/en/datasheet/cd00050750.pdf - Package: SOT-23-6 - Part Type: Diode - Manufacturer Name: STMicroelectronics **Pins:** - GND [pin 2] - I/O1_IN [pin 1] - I/O1_OUT [pin 6] - I/O2_IN [pin 3] - I/O2_OUT [pin 4] - VBUS [pin 5] ### J1 — [USB4105-GF-A](https://www.flux.ai/adrian95/usb4105-gf-a.md) - Manufacturer Part Number: USB4105-GF-A - Package: USB-C Receptacle - Manufacturer Name: GCT - Role Details: USB 2.0 connector for charging input and ESP32-S3 programming - Manufacturer Name: GCT - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://mm.digikey.com/Volume0/opasdata/d220001/medias/docus/5492/USB4105.pdf - Role: USB-C Interface - Part Type: USB C **Pins:** - CC1 [pin A5] - CC2 [pin B5] - DN1 [pin A7] - DN2 [pin B7] - DP1 [pin A6] - DP2 [pin B6] - GND [pin A1_B12] - GND__1 [pin B1_A12] - SBU1 [pin A8] - SBU2 [pin B8] - SHELL_GND [pin SH1] - SHELL_GND__1 [pin SH2] - SHELL_GND__2 [pin SH3] - SHELL_GND__3 [pin SH4] - VBUS [pin A4_B9] - VBUS__1 [pin B4_A9] ### J2 — [CONMHF1-SMD-G-T](https://www.flux.ai/adrian95/conmhf1-smd-g-t.md) - Package or Case Code: CONMHF1SMDGT - Role: GPS Antenna Connector - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://www.te.com/commerce/DocumentDelivery/DDEController?Action=srchrtrv&DocNm=conmhf1-smd-g-t-ds&DocType=Data+Sheet&DocLang=English&DocFormat=pdf&PartCntxt=CONMHF1-SMD-G-T - Package: U.FL - Part Type: Connector - Manufacturer Part Number: CONMHF1-SMD-G-T - Role Details: External GPS antenna connector for NEO-6M RF input - Manufacturer Name: TE Connectivity Linx **Pins:** - GND_1 [pin 2] - GND_2 [pin 3] - GND_3 [pin 4] - SIGNAL [pin 1] ### J3 — [78646-3001](https://www.flux.ai/adrian95/78646-3001.md) - Role Details: Micro SIM connector for cellular modem - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: 78646-3001 - Manufacturer Name: Molex - Role: SIM Connector - Datasheet URL: https://media.digikey.com/pdf/Data%20Sheets/Molex%20PDFs/micro-SIM_CardSockets(Hinged,PushPull).pdf - Package: Micro SIM - Part Type: Connector **Pins:** - CLK [pin C3] - GND [pin G2] - GND [pin G6] - GND [pin C5] - GND [pin G4] - GND [pin G1] - GND [pin G3] - GND [pin G5] - I/O [pin C7] - RST [pin C2] - VCC [pin C1] - VPP [pin C6] ### J4 — [S2B-PH-SM4-TB(LF)(SN)](https://www.flux.ai/adrian95/s2b-ph-sm4-tblfsn.md) - Manufacturer Part Number: S2B-PH-SM4-TB(LF)(SN) - Manufacturer Name: JST Sales America Inc. - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://www.jst-mfg.com/product/pdf/eng/ePH.pdf - Part Type: Connector - Role Details: Single-cell LiPo battery input connector - Package: JST-PH-2 - Role: Battery Connector **Pins:** - P1 [pin 1] - P2 [pin 2] ### Q1 — [MMBT2222A,215](https://www.flux.ai/adrian95/mmbt2222ac215.md) - Datasheet URL: https://assets.nexperia.com/documents/data-sheet/MMBT2222A.pdf - Manufacturer Name: Nexperia USA Inc. - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: MMBT2222A,215 - Package: SOT-23-3 - Role: PWRKEY Driver - Role Details: NPN transistor used to pull SIM800L PWRKEY low from an ESP32-S3 GPIO - Part Type: Transistor **Pins:** - B [pin 1] - C [pin 3] - E [pin 2] ### U1 — [ESP32-S3-MINI-1-N8](https://www.flux.ai/jecstronic/esp32-s3-mini-1-n8.md) - Part Type: Module - Datasheet URL: https://www.mouser.com/datasheet/2/891/esp32_s3_mini_1_mini_1u_datasheet_en-2997643.pdf - Manufacturer Name: Espressif Systems - Package: Module - Role: Main MCU - Role Details: ESP32-S3 controller for GSM, GPS, I2C sensors, and USB programming - Manufacturer Part Number: ESP32-S3-MINI-1-N8 - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - 3V3 [pin 3] - EN [pin 45] - GND [pin 2] - GND [pin 60] - GND [pin 49] - GND [pin 61_6] - GND [pin 59] - GND [pin 46] - GND [pin 47] - GND [pin 43] - GND [pin 61_1] - GND [pin 61] - GND [pin 61_3] - GND [pin 42] - GND [pin 57] - GND [pin 64] - GND [pin 1] - GND [pin 52] - GND [pin 61_8] - GND [pin 61_5] - GND [pin 48] - GND [pin 61_2] - GND [pin 51] - GND [pin 58] - GND [pin 56] - GND [pin 61_4] - GND [pin 63] - GND [pin 65] - GND [pin 53] - GND [pin 61_7] - GND [pin 55] - GND [pin 50] - GND [pin 54] - GND [pin 62] - IO0 [pin 4] - IO1 [pin 5] - IO10 [pin 14] - IO11 [pin 15] - IO12 [pin 16] - IO13 [pin 17] - IO14 [pin 18] - IO15 [pin 19] - IO16 [pin 20] - IO17 [pin 21] - IO18 [pin 22] - IO19 [pin 23] - IO2 [pin 6] - IO20 [pin 24] - IO21 [pin 25] - IO26 [pin 26] - IO3 [pin 7] - IO33 [pin 28] - IO34 [pin 29] - IO35 [pin 31] - IO36 [pin 32] - IO37 [pin 33] - IO38 [pin 34] - IO39 [pin 35] - IO4 [pin 8] - IO40 [pin 36] - IO41 [pin 37] - IO42 [pin 38] - IO45 [pin 41] - IO46 [pin 44] - IO47 [pin 27] - IO48 [pin 30] - IO5 [pin 9] - IO6 [pin 10] - IO7 [pin 11] - IO8 [pin 12] - IO9 [pin 13] - RXD0 [pin 40] - TXD0 [pin 39] ### U2 — [SIM800L](https://www.flux.ai/lcsc/sim800l.md) - LCSC Part Number: C124276 - Package: Module - Part Type: 2G/3G/4G/5G Modules - Manufacturer Part Number: SIM800L - Role: GSM Modem - Role Details: Full-pin SIM800L module with UART, PWRKEY, SIM interface, reset, SIM detect, and antenna pins - Package or Case Code: GSMM-SMD_SIM800L - Manufacturer Name: SIMCOM(芯讯通无线科技) - JLCPCB Part Class: Extended Part **Pins:** - ADC [pin 50] - ANT [pin 40] - BPI_BUS1 [pin 5] - COL0 [pin 20] - COL1 [pin 25] - COL2 [pin 22] - COL3 [pin 21] - COL4 [pin 24] - FM_ANT_N [pin 57] - FM_ANT_P [pin 17] - GND [pin 38] - GND [pin 8] - GND [pin 58] - GND [pin 85] - GND [pin 87] - GND [pin 6] - GND [pin 88] - GND [pin 84] - GND [pin 86] - GND [pin 83] - GND [pin 2] - GND [pin 78] - GND [pin 67] - GND [pin 71] - GND [pin 76] - GND [pin 44] - GND [pin 45] - GND [pin 72] - GND [pin 37] - GND [pin 41] - GND [pin 43] - GND [pin 39] - GND [pin 79] - GND [pin 80] - GND [pin 73] - GND [pin 82] - GND [pin 77] - GND [pin 81] - GND [pin 35] - GPIO1 [pin 3] - GPIO2 [pin 27] - GPIO3 [pin 28] - ISINK0 [pin 47] - ISINK1 [pin 46] - MIC1N [pin 12] - MIC1P [pin 52] - MIC2N [pin 10] - MIC2P [pin 9] - NC [pin 36] - NETLIGHT [pin 64] - PCMCLK [pin 29] - PCMIN [pin 66] - PCMOUT [pin 30] - PCMSYNC [pin 65] - PWM [pin 26] - PWRKEY [pin 48] - RESET [pin 49] - ROW0 [pin 62] - ROW1 [pin 60] - ROW2 [pin 61] - ROW3 [pin 23] - ROW4 [pin 63] - SCL [pin 74] - SDA [pin 75] - SIM_CLK [pin 55] - SIM_DATA [pin 14] - SIM_RST [pin 15] - SIMPRE [pin 54] - SPK1N [pin 13] - SPK1P [pin 53] - SPK2N [pin 11] - SPK2P8惟 [pin 51] - STATUS [pin 4] - UART_CTS [pin 34] - UART_DCD [pin 70] - UART_DTR [pin 69] - UART_RI [pin 68] - UART_RTS [pin 33] - UART_RXD [pin 31] - UART_TXD [pin 32] - USB_DM [pin 19] - USB_DP [pin 59] - VBAT [pin 1] - VBAT [pin 42] - VBUS [pin 7] - VEXT [pin 18] - VRTC [pin 56] - VSIM [pin 16] ### U3 — [NEO-6M-0-001](https://www.flux.ai/adrian95/neo-6m-0-001.md) - Role: GPS Receiver - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Module - Package: Module - Role Details: NEO-6M GPS module with UART connection and external antenna support - Manufacturer Part Number: NEO-6M-0-001 - Manufacturer Name: u-blox - Datasheet URL: https://www.u-blox.com/sites/default/files/products/documents/NEO-6_DataSheet_%28GPS.G6-HW-09005%29.pdf **Pins:** - CFG_GPS0/SCK [pin 16] - EXTINT0 [pin 4] - GND_1 [pin 10] - GND_2 [pin 12] - GND_3 [pin 13] - GND_4 [pin 24] - MISO/CFG_COM1 [pin 15] - MOSI/CFG_COM0 [pin 14] - RESERVED_1 [pin 1] - RESERVED_2 [pin 8] - RESERVED_3 [pin 17] - RF_IN [pin 11] - RXD1 [pin 21] - SCL2 [pin 19] - SDA2 [pin 18] - SS_N [pin 2] - TIMEPULSE [pin 3] - TXD1 [pin 20] - USB_DM [pin 5] - USB_DP [pin 6] - V_BCKP [pin 22] - VCC [pin 23] - VCC_RF [pin 9] - VDDUSB [pin 7] ### U4 — [MAX30102EFD+T](https://www.flux.ai/vasy_skral/max30102efdplust.md) - Manufacturer Name: Maxim Integrated - Role: Pulse Oximeter - Datasheet URL: https://datasheets.maximintegrated.com/en/ds/MAX30102.pdf - Part Type: Integrated Circuit - Package: Optical Sensor - Manufacturer Part Number: MAX30102EFD+T - Symbol Style: Parametric - Role Details: MAX30102 optical sensor with I2C interface and interrupt line to ESP32-S3 - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - ~INT [pin 13] - GND [pin 12] - IR_DRV [pin 6] - NC [pin 8] - NC [pin 14] - NC [pin 1] - NC [pin 7] - PGND [pin 4] - R_DRV [pin 5] - SCL [pin 2] - SDA [pin 3] - VDD [pin 11] - VLED+ [pin 10] - VLED+ [pin 9] ### U5 — [MCP73831T-2ACI/OT](https://www.flux.ai/adrian95/mcp73831t-2aciot.md) - Manufacturer Name: Microchip Technology - Datasheet URL: https://ww1.microchip.com/downloads/en/DeviceDoc/MCP73831-Family-Data-Sheet-DS20001984H.pdf - Part Type: Integrated Circuit - Role Details: Linear single-cell LiPo charger from USB 5 V input - Package: SOT-23-5 - Role: LiPo Charger - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: MCP73831T-2ACI/OT **Pins:** - PROG [pin 5] - STAT [pin 1] - VBAT [pin 3] - VIN [pin 4] - VSS [pin 2] ### U6 — [LP5907MFX-3.3/NOPB](https://www.flux.ai/adrian95/lp5907mfx-33nopb.md) - Role Details: Temporary stand-in for AP2112K-3.3 to realize the 3.3V rail while maintaining the planned regulator architecture - Role: 3.3V Regulator - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Integrated Circuit - Manufacturer Name: Texas Instruments - Package: SOT-23-5 - Datasheet URL: https://www.ti.com/general/docs/suppproductinfo.tsp?distId=10&gotoUrl=https%3A%2F%2Fwww.ti.com%2Flit%2Fgpn%2Flp5907 - Manufacturer Part Number: LP5907MFX-3.3/NOPB **Pins:** - EN [pin 3] - GND [pin 2] - IN [pin 1] - NC [pin 4] - OUT [pin 5] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/sidalib/wino-child-safety-wearable](https://www.flux.ai/sidalib/wino-child-safety-wearable).* --- *Generated from [https://www.flux.ai/sidalib/wino-child-safety-wearable](https://www.flux.ai/sidalib/wino-child-safety-wearable)*