# ESP32-S3 OLED Watch ## Description Rechargeable ESP32-S3 smartwatch with OLED display, USB-C LiPo charging, accelerometer, native USB programming, and low-power operation. ## Project Details - **Owner:** purplerock - **Created:** 7/21/2026 - **Last Updated:** 7/22/2026 - **Visibility:** Public - **Software:** Arduino - **Connectivity:** WiFi - **Power Requirements:** Battery - **Operating Voltage:** 3.3V - **Human Interface:** Display - **Domain:** Consumer Electronics ## Key Components ### D1 — [TPD1E05U06DPYR](https://www.flux.ai/lcsc/tpd1e05u06dpyr~sh59.md) - Package or Case Code: DFN1006-2L-RD - Datasheet URL: https://www.ti.com/lit/ds/symlink/tpd1e05u06.pdf - Role Details: USB VBUS 5V transient and ESD shunt to ground near connector - JLCPCB Part Class: Extended Part - Part Type: ESD and Surge Protection (TVS/ESD) - License: https://creativecommons.org/licenses/by/4.0/ - Role: Protection - Manufacturer Name: TPD1E05U06DPYR - LCSC Part Number: C2937017 - Manufacturer Part Number: TPD1E05U06DPYR **Pins:** - A [pin 2] - C [pin 1] ### F1 — [0603L050YR](https://www.flux.ai/adrian95/0603l050yr~cqy.md) - License: https://creativecommons.org/licenses/by/4.0/ - Role: Protection - Datasheet URL: https://www.littelfuse.com/assetdocs/resettable-ptcs-0603l-datasheet?assetguid=879563f9-97a7-4e71-adba-37de085b333f - Manufacturer Name: Littelfuse Inc. - Part Type: Fuse - Manufacturer Part Number: 0603L050YR - Role Details: USB VBUS 500mA hold resettable overcurrent fuse; 1A trip, 6V max **Pins:** - P1 [pin 1] - P2 [pin 2] ### J1 — [USB4215-03-A](https://www.flux.ai/adrian95/usb4215-03-a~kg3.md) - Part Type: USB C - Manufacturer Name: GCT - Package or Case Code: GCT_USB4215-03-A_REVA - Datasheet URL: https://gct.co/files/specs/usb4215-spec.pdf - Manufacturer Part Number: USB4215-03-A - Symbol Style: parametric-v1 - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - CC1 [pin A5] - CC2 [pin B5] - DN1 [pin A7] - DN2 [pin B7] - DP1 [pin A6] - DP2 [pin B6] - GND_A [pin A1_B12] - GND_B [pin B1_A12] - SBU1 [pin A8] - SBU2 [pin B8] - SHIELD [pin SH1] - SHIELD [pin SH4] - SHIELD [pin SH2] - SHIELD [pin SH3] - VBUS_A [pin A4_B9] - VBUS_B [pin B4_A9] ### J2 — [78171-0003](https://www.flux.ai/intellugogroup/78171-0003~8t.md) - Manufacturer Part Number: 78171-0003 **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] ### SW1 — [TS-1088-AR02016](https://www.flux.ai/lcsc/ts-1088-ar02016~e3n1.md) - Manufacturer Name: XUNPU(讯普) - Product Info Url: https://lcsc.com/product-detail/Tactile-Switches_XUNPU-TS-1088-AR02016_C720477.html - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2409302330_XUNPU-TS-1088-AR02016_C720477.pdf - Package or Case Code: SW-SMD_L3.9-W3.0-P4.45 - Manufacturer Part Number: TS-1088-AR02016 - JLCPCB Part Class: Extended Part - Part Type: Tactile Switches - LCSC Part Number: C720477 **Pins:** - 1 [pin 1] - 2 [pin 2] ### SW2 — [TS-1088-AR02016](https://www.flux.ai/lcsc/ts-1088-ar02016~e3n1.md) - Manufacturer Part Number: TS-1088-AR02016 - LCSC Part Number: C720477 - JLCPCB Part Class: Extended Part - Part Type: Tactile Switches - Package or Case Code: SW-SMD_L3.9-W3.0-P4.45 - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2409302330_XUNPU-TS-1088-AR02016_C720477.pdf - Product Info Url: https://lcsc.com/product-detail/Tactile-Switches_XUNPU-TS-1088-AR02016_C720477.html - Manufacturer Name: XUNPU(讯普) **Pins:** - 1 [pin 1] - 2 [pin 2] ### SW3 — [TS-1088-AR02016](https://www.flux.ai/lcsc/ts-1088-ar02016~e3n1.md) - Package or Case Code: SW-SMD_L3.9-W3.0-P4.45 - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2409302330_XUNPU-TS-1088-AR02016_C720477.pdf - Manufacturer Part Number: TS-1088-AR02016 - LCSC Part Number: C720477 - Part Type: Tactile Switches - JLCPCB Part Class: Extended Part - Manufacturer Name: XUNPU(讯普) - Product Info Url: https://lcsc.com/product-detail/Tactile-Switches_XUNPU-TS-1088-AR02016_C720477.html **Pins:** - 1 [pin 1] - 2 [pin 2] ### SW4 — [TS-1088-AR02016](https://www.flux.ai/lcsc/ts-1088-ar02016~e3n1.md) - JLCPCB Part Class: Extended Part - LCSC Part Number: C720477 - Part Type: Tactile Switches - Manufacturer Part Number: TS-1088-AR02016 - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2409302330_XUNPU-TS-1088-AR02016_C720477.pdf - Package or Case Code: SW-SMD_L3.9-W3.0-P4.45 - Product Info Url: https://lcsc.com/product-detail/Tactile-Switches_XUNPU-TS-1088-AR02016_C720477.html - Manufacturer Name: XUNPU(讯普) **Pins:** - 1 [pin 1] - 2 [pin 2] ### SW5 — [TS-1088-AR02016](https://www.flux.ai/lcsc/ts-1088-ar02016~e3n1.md) - Package or Case Code: SW-SMD_L3.9-W3.0-P4.45 - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2409302330_XUNPU-TS-1088-AR02016_C720477.pdf - Part Type: Tactile Switches - LCSC Part Number: C720477 - JLCPCB Part Class: Extended Part - Manufacturer Part Number: TS-1088-AR02016 - Manufacturer Name: XUNPU(讯普) - Product Info Url: https://lcsc.com/product-detail/Tactile-Switches_XUNPU-TS-1088-AR02016_C720477.html **Pins:** - 1 [pin 1] - 2 [pin 2] ### U1 — [ESP32-S3-MINI-1-N8](https://www.flux.ai/lcsc/esp32-s3-mini-1-n8~hi03.md) - Manufacturer Part Number: ESP32-S3-MINI-1-N8 - LCSC Part Number: C2913206 - Datasheet URL: https://www.lcsc.com/datasheet/C2913206.pdf?spm=wm.sxq.inf.ggs&lcsc_vid=FlkNBAIDRQULVABfFAVZBgZVFVZYBgZSQ1NeBVIFQlExVlNeR1VXVFVfQlVcVzsOAxUeFF5JWBYZEEoKFBINSQcJGk4dAgUUFAk%3D - Part Type: WiFi Modules - Manufacturer Name: ESPRESSIF(乐鑫) - Package or Case Code: BULETM-SMD_ESP32-S3-MINI-1-N8 - Symbol Style: parametric-v1 - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - 3V3 [pin 3] - EN [pin 45] - GND [pin 52] - GND [pin 57] - GND [pin 43] - GND [pin 47] - GND [pin 71] - GND [pin 56] - GND [pin 65] - GND [pin 2] - GND [pin 48] - GND [pin 58] - GND [pin 69] - GND [pin 60] - GND [pin 72] - GND [pin 46] - GND [pin 63] - GND [pin 67] - GND [pin 66] - GND [pin 59] - GND [pin 53] - GND [pin 42] - GND [pin 73] - GND [pin 1] - GND [pin 70] - GND [pin 55] - GND [pin 62] - GND [pin 51] - GND [pin 49] - GND [pin 50] - GND [pin 61] - GND [pin 54] - GND [pin 68] - GND [pin 64] - 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 — [BQ24074RGTR](https://www.flux.ai/vasyl/bq24074rgtr~yke.md) - Datasheet URL: https://www.ti.com/general/docs/suppproductinfo.tsp?distId=10&gotoUrl=https%3A%2F%2Fwww.ti.com%2Flit%2Fgpn%2Fbq24074 - Manufacturer Part Number: BQ24074RGTR - Manufacturer Name: Texas Instruments - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Battery Chargers **Pins:** - ~CE [pin 4] - ~CHG [pin 9] - ~PGOOD [pin 7] - BAT_2 [pin 2] - BAT_3 [pin 3] - EN1 [pin 6] - EN2 [pin 5] - EXP [pin 17] - ILIM [pin 12] - IN [pin 13] - ISET [pin 16] - ITERM [pin 15] - OUT_10 [pin 10] - OUT_11 [pin 11] - TMR [pin 14] - TS [pin 1] - VSS [pin 8] ### U3 — [TPS63020DSJR](https://www.flux.ai/jecstronic/tps63020dsjr~tvs.md) - Manufacturer Name: Texas Instruments - Part Type: Integrated Circuit - Datasheet URL: https://www.ti.com/lit/ds/symlink/tps63020.pdf - Manufacturer Part Number: TPS63020DSJR - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - EN [pin 12] - EPAD [pin 15] - FB [pin 3] - GND [pin 2] - L1 [pin 8] - L1 [pin 9] - L2 [pin 6] - L2 [pin 7] - PG [pin 14] - PS/SYNC [pin 13] - VIN [pin 11] - VIN [pin 10] - VINA [pin 1] - VOUT [pin 5] - VOUT [pin 4] ### U4 — [BMI270](https://www.flux.ai/jecstronic/bmi270~0q9.md) - Datasheet URL: https://www.bosch-sensortec.com/media/boschsensortec/downloads/datasheets/bst-bmi270-ds000.pdf - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: BMI270 - Part Type: Sensor - Manufacturer Name: Bosch Sensortec **Pins:** - ASCX [pin 3] - ASDX [pin 2] - CSB [pin 12] - GND [pin 7] - GNDIO [pin 6] - INT1 [pin 4] - INT2 [pin 9] - OSCB [pin 10] - OSDO [pin 11] - SCX [pin 13] - SDO [pin 1] - SDX [pin 14] - VDD [pin 8] - VDDIO [pin 5] ### U5 — [MAX17048G+T10](https://www.flux.ai/adrian95/max17048gplust10~3vm.md) - Manufacturer Part Number: MAX17048G+T10 - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://www.analog.com/media/en/technical-documentation/data-sheets/MAX17048-MAX17049.pdf - Manufacturer Name: Analog Devices Inc./Maxim Integrated - Part Type: Integrated Circuit **Pins:** - ~ALERT [pin 5] - CELL [pin 2] - CTG [pin 1] - EP [pin 9] - GND [pin 4] - QSTRT [pin 6] - SCL [pin 7] - SDA [pin 8] - VDD [pin 3] ### U6 — [USBLC6-2SC6](https://www.flux.ai/lcsc/usblc6-2sc6~2e9x.md) - Operating Temperature: -55°C ~ 125°C (TJ) - Part Type: ESD Protection Devices - Manufacturer Name: UMW(友台半导体) - Role: Protection - Symbol Style: parametric-v1 - Maximum Clamping Voltage: 17V - Breakdown Voltage: 6V - Role Details: Low-capacitance dual-line USB 2.0 ESD steering array - LCSC Part Number: C2687116 - Datasheet URL: https://www.lcsc.com/datasheet/C2687116.pdf?spm=wm.sxq.inf.ggs&lcsc_vid=FlkNBAIDRQULVABfFAVZBgZVFVZYBgZSQ1NeBVIFQlExVlNRTlhdUVdURFlXXzsOAxUeFF5JWBYZEEoKFBINSQcJGk4dAgUUFAk%3D - Power: 150W - JLCPCB Part Class: Extended Part - Peak Pulse Current: 5A - Manufacturer Part Number: USBLC6-2SC6 - Package or Case Code: SOT-23-6_L2.9-W1.6-P0.95-LS2.8-BL **Pins:** - GND [pin 2] - I/O1 [pin 1] - I/O1 [pin 6] - I/O2 [pin 3] - I/O2 [pin 4] - VBUS [pin 5] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/purplerock/esp32-s3-oled-watch~dy](https://www.flux.ai/purplerock/esp32-s3-oled-watch~dy).* --- *Generated from [https://www.flux.ai/purplerock/esp32-s3-oled-watch~dy](https://www.flux.ai/purplerock/esp32-s3-oled-watch~dy)*