# Rugged Modular Security Toolkit e4b4 ## Description Battery-powered modular ESP32-S3 field toolkit for authorized NFC, sub-GHz, infrared, USB, and wired hardware debugging experiments, developed first as a serviceable proof of concept and later as a sealed handheld. ## Project Details - **Owner:** macswim - **Created:** 8/25/2026 - **Last Updated:** 8/25/2026 - **Visibility:** Public - **Stars:** 1 ## Key Components ### D1 — [USBLC6-2SC6](https://www.flux.ai/vasy_skral/usblc6-2sc6~g1b.md) - Manufacturer Part Number: USBLC6-2SC6 - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Protection - Manufacturer Name: STMicroelectronics - Datasheet URL: https://www.st.com/content/ccc/resource/technical/document/datasheet/06/1d/48/9c/6c/20/4a/b2/CD00050750.pdf/files/CD00050750.pdf/jcr:content/translations/en.CD00050750.pdf - LCSC Part Number: C7519 - Symbol Style: parametric-v1 - Role: ESD Protection - Role Details: Low-capacitance protection at USB-C connector - Functional Group: USB-C Input and Native USB **Pins:** - GND [pin 2] - I/O1 [pin 6] - I/O1 [pin 1] - I/O2 [pin 3] - I/O2 [pin 4] - VBUS [pin 5] ### D2 — [TPD4E05U06DQAR](https://www.flux.ai/jharwinflux/tpd4e05u06dqar~rl.md) - Manufacturer Part Number: TPD4E05U06DQAR - Manufacturer Name: Texas Instruments Inc. - Datasheet URL: https://www.ti.com/lit/ds/symlink/tpd4e05u06.pdf - Part Type: Diode - License: https://creativecommons.org/licenses/by/4.0/ - Role: ESD Protection - Role Details: Connector-side multi-channel IEC ESD arrays - Functional Group: Protected Wired Debug,Expansion and Test **Pins:** - D1- [pin 2] - D1+ [pin 1] - D2- [pin 5] - D2+ [pin 4] - GND_1 [pin 3] - GND_2 [pin 8] - NC_1 [pin 6] - NC_2 [pin 7] - NC_3 [pin 9] - NC_4 [pin 10] ### D3 — [TPD4E05U06DQAR](https://www.flux.ai/jharwinflux/tpd4e05u06dqar~rl.md) - Manufacturer Part Number: TPD4E05U06DQAR - Manufacturer Name: Texas Instruments Inc. - Datasheet URL: https://www.ti.com/lit/ds/symlink/tpd4e05u06.pdf - Part Type: Diode - License: https://creativecommons.org/licenses/by/4.0/ - Role: ESD Protection - Role Details: Connector-side multi-channel IEC ESD arrays - Functional Group: Protected Wired Debug,Expansion and Test **Pins:** - D1- [pin 2] - D1+ [pin 1] - D2- [pin 5] - D2+ [pin 4] - GND_1 [pin 3] - GND_2 [pin 8] - NC_1 [pin 6] - NC_2 [pin 7] - NC_3 [pin 9] - NC_4 [pin 10] ### D4 — [TPD4E05U06DQAR](https://www.flux.ai/jharwinflux/tpd4e05u06dqar~rl.md) - Manufacturer Part Number: TPD4E05U06DQAR - Manufacturer Name: Texas Instruments Inc. - Datasheet URL: https://www.ti.com/lit/ds/symlink/tpd4e05u06.pdf - Part Type: Diode - License: https://creativecommons.org/licenses/by/4.0/ - Role: ESD Protection - Role Details: Connector-side multi-channel IEC ESD arrays - Functional Group: Protected Wired Debug,Expansion and Test **Pins:** - D1- [pin 2] - D1+ [pin 1] - D2- [pin 5] - D2+ [pin 4] - GND_1 [pin 3] - GND_2 [pin 8] - NC_1 [pin 6] - NC_2 [pin 7] - NC_3 [pin 9] - NC_4 [pin 10] ### D5 — [15412094A9000](https://www.flux.ai/silicon-yard/15412094a9000.md) - Manufacturer Part Number: 15412094A9000 - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/user-uploaded/53c9edfe71c5f8f327c5116ac4182d28ccdf3842e792c63b8f6b4134d51078e8.pdf - Manufacturer Name: Würth - Part Type: Optoelectronic Devices - Mount: Surface Mount - Role: IR Emitter - Role Details: Pulsed MOSFET-driven emitter; conservative current below pulse rating pending validation - Functional Group: Infrared **Pins:** - - [pin 2] - + [pin 1] ### J1 — [USB4105-GF-A](https://www.flux.ai/adrian95/usb4105-gf-a~im9.md) - Part Type: USB C - License: https://creativecommons.org/licenses/by/4.0/ - Symbol Style: parametric-v1 - Manufacturer Name: GCT - Manufacturer Name: GCT - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/user-uploaded/c2c7fba82d64960d510c5688ccda39e92973a3ef64f0758ccd8dce8a07cbda76.pdf - Manufacturer Part Number: USB4105-GF-A - Role: USB-C Device Port - Role Details: USB 2.0 sink/device only; separate switched 5 V expansion output - Functional Group: USB-C Input and Native USB **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] ### J10 — [Pin Header 01x03 2.54mm Vertical](https://www.flux.ai/adrian95/pin-header-01x03-254mm-vertical~cp4.md) - Part Type: Connector - License: https://creativecommons.org/licenses/by/4.0/ - Role: Configuration Jumper - Role Details: Explicit target reference/direction selection; no unsafe automatic inference - Functional Group: Protected Wired Debug **Pins:** - Pin_1 [pin 1] - Pin_2 [pin 2] - Pin_3 [pin 3] ### J11 — [Pin Header 01x03 2.54mm Vertical](https://www.flux.ai/adrian95/pin-header-01x03-254mm-vertical~cp4.md) - Part Type: Connector - License: https://creativecommons.org/licenses/by/4.0/ - Role: Sensing (Shunt) - Role Details: External 10k NTC battery temperature connection; center is TS sense - Functional Group: Power Input and Charging **Pins:** - Pin_1 [pin 1] - Pin_2 [pin 2] - Pin_3 [pin 3] ### J2 — [B2B-XH-A(LF)(SN)](https://www.flux.ai/lcsc/b2b-xh-alfsn~xrt.md) - JLCPCB Part Class: Extended Part - Product Info Url: https://lcsc.com/product-detail/XH-Connectors_JST_B2B-XH-A-LF-SN_XHsocket-1-2P-pitch2-5mm_C158012.html - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2304140030_JST-B2B-XH-A-LF-SN_C158012.pdf - Package or Case Code: CONN-TH_B2B-XH-A-LF-SN - Pitch: 2.5mm - Part Type: Wire To Board / Wire To Wire Connector - Manufacturer Name: JST - Gender: Male - Connector Type: Wire To Board / Wire To Wire Connector - Manufacturer Part Number: B2B-XH-A(LF)(SN) - Rows: 1 - Positions: 2 - LCSC Part Number: C158012 - Role: Battery Connector - Role Details: 3 A rated polarized connector; battery pack must include cell protection and NTC lead is separate - Functional Group: Power Input and Charging **Pins:** - 1 [pin 1] - 2 [pin 2] ### J3 — [DM3AT-SF-PEJM5](https://www.flux.ai/adrian95/dm3at-sf-pejm5~p1p.md) - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: DM3AT-SF-PEJM5 - Manufacturer Name: Hirose Electric Co Ltd - Datasheet URL: https://www.mouser.com/datasheet/2/185/DM3AT_SF_PEJM5_CL0609_0031_0_00_2DDrawing_00009471-1614303.pdf - Part Type: Connector - Symbol Style: parametric-v1 - Role: Storage Connector - Role Details: SPI-mode microSD with safe CS pull-up and switched rail - Functional Group: microSD **Pins:** - ~ [pin SWA] - ~ [pin SWB] - CD/DAT3 [pin 2] - CLK [pin 5] - CMD [pin 3] - DAT0 [pin 7] - DAT1 [pin 8] - DAT2 [pin 1] - SHIELD [pin P3] - SHIELD [pin P4] - SHIELD [pin P1] - SHIELD [pin P2] - VDD [pin 4] - VSS [pin 6] ### J4 — [Pin Header 02x10 2.54mm Vertical](https://www.flux.ai/adrian95/pin-header-02x10-254mm-vertical~o55.md) - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Connector - Role: NFC Module Header - Role Details: 3.3 V switched power, SPI/I2C, IRQ and reset; antenna remains on module - Functional Group: NFC Module **Pins:** - Pin_1 [pin 1] - Pin_10 [pin 10] - Pin_11 [pin 11] - Pin_12 [pin 12] - Pin_13 [pin 13] - Pin_14 [pin 14] - Pin_15 [pin 15] - Pin_16 [pin 16] - Pin_17 [pin 17] - Pin_18 [pin 18] - Pin_19 [pin 19] - Pin_2 [pin 2] - Pin_20 [pin 20] - Pin_3 [pin 3] - Pin_4 [pin 4] - Pin_5 [pin 5] - Pin_6 [pin 6] - Pin_7 [pin 7] - Pin_8 [pin 8] - Pin_9 [pin 9] ### J5 — [Pin Header 02x10 2.54mm Vertical](https://www.flux.ai/adrian95/pin-header-02x10-254mm-vertical~o55.md) - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Connector - Role: Sub-GHz Module Header - Role Details: 3.3 V switched power, SPI and IRQ/control; antenna handled by module - Functional Group: Sub-GHz Module **Pins:** - Pin_1 [pin 1] - Pin_10 [pin 10] - Pin_11 [pin 11] - Pin_12 [pin 12] - Pin_13 [pin 13] - Pin_14 [pin 14] - Pin_15 [pin 15] - Pin_16 [pin 16] - Pin_17 [pin 17] - Pin_18 [pin 18] - Pin_19 [pin 19] - Pin_2 [pin 2] - Pin_20 [pin 20] - Pin_3 [pin 3] - Pin_4 [pin 4] - Pin_5 [pin 5] - Pin_6 [pin 6] - Pin_7 [pin 7] - Pin_8 [pin 8] - Pin_9 [pin 9] ### J6 — [2.54-2*8P针](https://www.flux.ai/lcsc/2p54-28p~axke.md) - Datasheet URL: https://www.lcsc.com/datasheet/C779499.pdf?spm=wm.sxq.inf.ggs&lcsc_vid=FlkNBAIDRQULVABfFAVZBgZVFVZYBgZSQ1NeBVIFQlExVlNeR1JcVFdURlJdUTsOAxUeFF5JWBYZEEoKFBINSQcJGk4dAgUUFAk%3D - License: https://creativecommons.org/licenses/by/4.0/ - Symbol Style: parametric-v1 - LCSC Part Number: C779499 - Manufacturer Name: BOOMELE(博穆精密) - Manufacturer Part Number: 2.54-2*8P针 - JLCPCB Part Class: Extended Part - Part Type: Pin Headers - Package or Case Code: HDR-TH_16P-P2.54-V-M-R2-C8-S2.54 - Role: Display and Keypad Header - Role Details: Switched display rail, independent backlight enable, SPI and button inputs - Functional Group: Display and Controls **Pins:** - 1 [pin 1] - 10 [pin 10] - 11 [pin 11] - 12 [pin 12] - 13 [pin 13] - 14 [pin 14] - 15 [pin 15] - 16 [pin 16] - 2 [pin 2] - 3 [pin 3] - 4 [pin 4] - 5 [pin 5] - 6 [pin 6] - 7 [pin 7] - 8 [pin 8] - 9 [pin 9] ### J7 — [Pin Header 02x10 2.54mm Vertical](https://www.flux.ai/adrian95/pin-header-02x10-254mm-vertical~o55.md) - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Connector - Role: Target Debug Header - Role Details: UART, I2C, SPI, GPIO, GND, VTGT sense and separately current-limited 5 V output - Functional Group: Protected Wired Debug **Pins:** - Pin_1 [pin 1] - Pin_10 [pin 10] - Pin_11 [pin 11] - Pin_12 [pin 12] - Pin_13 [pin 13] - Pin_14 [pin 14] - Pin_15 [pin 15] - Pin_16 [pin 16] - Pin_17 [pin 17] - Pin_18 [pin 18] - Pin_19 [pin 19] - Pin_2 [pin 2] - Pin_20 [pin 20] - Pin_3 [pin 3] - Pin_4 [pin 4] - Pin_5 [pin 5] - Pin_6 [pin 6] - Pin_7 [pin 7] - Pin_8 [pin 8] - Pin_9 [pin 9] ### J8 — [Pin Header 02x10 2.54mm Vertical](https://www.flux.ai/adrian95/pin-header-02x10-254mm-vertical~o55.md) - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Connector - Role: Expansion Header - Role Details: Major rails, shared buses, spare GPIO and enable controls - Functional Group: Expansion and Test **Pins:** - Pin_1 [pin 1] - Pin_10 [pin 10] - Pin_11 [pin 11] - Pin_12 [pin 12] - Pin_13 [pin 13] - Pin_14 [pin 14] - Pin_15 [pin 15] - Pin_16 [pin 16] - Pin_17 [pin 17] - Pin_18 [pin 18] - Pin_19 [pin 19] - Pin_2 [pin 2] - Pin_20 [pin 20] - Pin_3 [pin 3] - Pin_4 [pin 4] - Pin_5 [pin 5] - Pin_6 [pin 6] - Pin_7 [pin 7] - Pin_8 [pin 8] - Pin_9 [pin 9] ### J9 — [Pin Header 01x03 2.54mm Vertical](https://www.flux.ai/adrian95/pin-header-01x03-254mm-vertical~cp4.md) - Part Type: Connector - License: https://creativecommons.org/licenses/by/4.0/ - Role: Configuration Jumper - Role Details: Explicit target reference/direction selection; no unsafe automatic inference - Functional Group: Protected Wired Debug **Pins:** - Pin_1 [pin 1] - Pin_2 [pin 2] - Pin_3 [pin 3] ### Q1 — [AO3400A](https://www.flux.ai/adrian95/ao3400a~ug9.md) - Datasheet URL: https://media.digikey.com/pdf/Data%20Sheets/Alpha%20&%20Omega/AO3400A_ds.pdf - Manufacturer Part Number: AO3400A - Manufacturer Name: Alpha & Omega Semiconductor Inc. - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Transistor - Role: IR LED Driver - Role Details: Logic-level N-MOSFET driven from ESP32 through gate resistor - Functional Group: Infrared **Pins:** - D [pin 3] - G [pin 1] - S [pin 2] ### SW1 — [TS-1088-AR02016](https://www.flux.ai/lcsc/ts-1088-ar02016~e3n1.md) - Manufacturer Name: XUNPU(讯普) - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2409302330_XUNPU-TS-1088-AR02016_C720477.pdf - JLCPCB Part Class: Extended Part - Manufacturer Part Number: TS-1088-AR02016 - Product Info Url: https://lcsc.com/product-detail/Tactile-Switches_XUNPU-TS-1088-AR02016_C720477.html - LCSC Part Number: C720477 - Part Type: Tactile Switches - Package or Case Code: SW-SMD_L3.9-W3.0-P4.45 - Role: Control Switch - Role Details: BOOT and RESET momentary controls - Functional Group: MCU Core **Pins:** - 1 [pin 1] - 2 [pin 2] ### SW2 — [TS-1088-AR02016](https://www.flux.ai/lcsc/ts-1088-ar02016~e3n1.md) - Manufacturer Name: XUNPU(讯普) - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2409302330_XUNPU-TS-1088-AR02016_C720477.pdf - JLCPCB Part Class: Extended Part - Manufacturer Part Number: TS-1088-AR02016 - Product Info Url: https://lcsc.com/product-detail/Tactile-Switches_XUNPU-TS-1088-AR02016_C720477.html - LCSC Part Number: C720477 - Part Type: Tactile Switches - Package or Case Code: SW-SMD_L3.9-W3.0-P4.45 - Role: Control Switch - Role Details: BOOT and RESET momentary controls - Functional Group: MCU Core **Pins:** - 1 [pin 1] - 2 [pin 2] ### TP1 — [S2761-46R](https://www.flux.ai/silicon-yard/s2761-46r.md) - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://www.harwin.com/api/download/datasheet/S2761-46R - Manufacturer Name: Harwin Inc. - Manufacturer Part Number: S2761-46R - Part Type: Test Point - Role: Test Point - Role Details: Bring-up test access to power and communication nets - Functional Group: Expansion and Test **Pins:** - ~ [pin 1] ### TP10 — [S2761-46R](https://www.flux.ai/silicon-yard/s2761-46r.md) - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://www.harwin.com/api/download/datasheet/S2761-46R - Manufacturer Name: Harwin Inc. - Manufacturer Part Number: S2761-46R - Part Type: Test Point - Role: Test Point - Role Details: Bring-up test access to power and communication nets - Functional Group: Expansion and Test **Pins:** - ~ [pin 1] ### TP11 — [S2761-46R](https://www.flux.ai/silicon-yard/s2761-46r.md) - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://www.harwin.com/api/download/datasheet/S2761-46R - Manufacturer Name: Harwin Inc. - Manufacturer Part Number: S2761-46R - Part Type: Test Point - Role: Test Point - Role Details: Bring-up test access to power and communication nets - Functional Group: Expansion and Test **Pins:** - ~ [pin 1] ### TP12 — [S2761-46R](https://www.flux.ai/silicon-yard/s2761-46r.md) - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://www.harwin.com/api/download/datasheet/S2761-46R - Manufacturer Name: Harwin Inc. - Manufacturer Part Number: S2761-46R - Part Type: Test Point - Role: Test Point - Role Details: Bring-up test access to power and communication nets - Functional Group: Expansion and Test **Pins:** - ~ [pin 1] ### TP2 — [S2761-46R](https://www.flux.ai/silicon-yard/s2761-46r.md) - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://www.harwin.com/api/download/datasheet/S2761-46R - Manufacturer Name: Harwin Inc. - Manufacturer Part Number: S2761-46R - Part Type: Test Point - Role: Test Point - Role Details: Bring-up test access to power and communication nets - Functional Group: Expansion and Test **Pins:** - ~ [pin 1] ### TP3 — [S2761-46R](https://www.flux.ai/silicon-yard/s2761-46r.md) - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://www.harwin.com/api/download/datasheet/S2761-46R - Manufacturer Name: Harwin Inc. - Manufacturer Part Number: S2761-46R - Part Type: Test Point - Role: Test Point - Role Details: Bring-up test access to power and communication nets - Functional Group: Expansion and Test **Pins:** - ~ [pin 1] ### TP4 — [S2761-46R](https://www.flux.ai/silicon-yard/s2761-46r.md) - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://www.harwin.com/api/download/datasheet/S2761-46R - Manufacturer Name: Harwin Inc. - Manufacturer Part Number: S2761-46R - Part Type: Test Point - Role: Test Point - Role Details: Bring-up test access to power and communication nets - Functional Group: Expansion and Test **Pins:** - ~ [pin 1] ### TP5 — [S2761-46R](https://www.flux.ai/silicon-yard/s2761-46r.md) - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://www.harwin.com/api/download/datasheet/S2761-46R - Manufacturer Name: Harwin Inc. - Manufacturer Part Number: S2761-46R - Part Type: Test Point - Role: Test Point - Role Details: Bring-up test access to power and communication nets - Functional Group: Expansion and Test **Pins:** - ~ [pin 1] ### TP6 — [S2761-46R](https://www.flux.ai/silicon-yard/s2761-46r.md) - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://www.harwin.com/api/download/datasheet/S2761-46R - Manufacturer Name: Harwin Inc. - Manufacturer Part Number: S2761-46R - Part Type: Test Point - Role: Test Point - Role Details: Bring-up test access to power and communication nets - Functional Group: Expansion and Test **Pins:** - ~ [pin 1] ### TP7 — [S2761-46R](https://www.flux.ai/silicon-yard/s2761-46r.md) - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://www.harwin.com/api/download/datasheet/S2761-46R - Manufacturer Name: Harwin Inc. - Manufacturer Part Number: S2761-46R - Part Type: Test Point - Role: Test Point - Role Details: Bring-up test access to power and communication nets - Functional Group: Expansion and Test **Pins:** - ~ [pin 1] ### TP8 — [S2761-46R](https://www.flux.ai/silicon-yard/s2761-46r.md) - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://www.harwin.com/api/download/datasheet/S2761-46R - Manufacturer Name: Harwin Inc. - Manufacturer Part Number: S2761-46R - Part Type: Test Point - Role: Test Point - Role Details: Bring-up test access to power and communication nets - Functional Group: Expansion and Test **Pins:** - ~ [pin 1] ### TP9 — [S2761-46R](https://www.flux.ai/silicon-yard/s2761-46r.md) - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://www.harwin.com/api/download/datasheet/S2761-46R - Manufacturer Name: Harwin Inc. - Manufacturer Part Number: S2761-46R - Part Type: Test Point - Role: Test Point - Role Details: Bring-up test access to power and communication nets - Functional Group: Expansion and Test **Pins:** - ~ [pin 1] ### U1 — [ESP32-S3-WROOM-1-N16R8](https://www.flux.ai/adrian95/esp32-s3-wroom-1-n16r8~fs1.md) - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/user-uploaded/bcd526f54b8de686cec4db67219e36ea7ace50cddb0c92f3dfdac49cf99ffd2e.pdf - Symbol Style: parametric-v1 - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: ESP32-S3-WROOM-1-N16R8 - Part Type: Module - Manufacturer Name: Espressif Systems - Role: Primary Compute - Role Details: ESP32-S3 native USB module; GPIO map avoids ordinary use of GPIO0/3/45/46 - Functional Group: MCU Core **Pins:** - 3V3 [pin 2] - EN [pin 3] - GND_1 [pin 1] - GND_10 [pin 48] - GND_11 [pin 49] - GND_2 [pin 40] - GND_3 [pin 41] - GND_4 [pin 42] - GND_5 [pin 43] - GND_6 [pin 44] - GND_7 [pin 45] - GND_8 [pin 46] - GND_9 [pin 47] - IO0 [pin 27] - IO1 [pin 39] - IO10 [pin 18] - IO11 [pin 19] - IO12 [pin 20] - IO13 [pin 21] - IO14 [pin 22] - IO15 [pin 8] - IO16 [pin 9] - IO17 [pin 10] - IO18 [pin 11] - IO19 [pin 13] - IO2 [pin 38] - IO20 [pin 14] - IO21 [pin 23] - IO3 [pin 15] - IO35 [pin 28] - IO36 [pin 29] - IO37 [pin 30] - IO38 [pin 31] - IO39 [pin 32] - IO4 [pin 4] - IO40 [pin 33] - IO41 [pin 34] - IO42 [pin 35] - IO45 [pin 26] - IO46 [pin 16] - IO47 [pin 24] - IO48 [pin 25] - IO5 [pin 5] - IO6 [pin 6] - IO7 [pin 7] - IO8 [pin 12] - IO9 [pin 17] - RXD0 [pin 36] - TXD0 [pin 37] ### U10 — [TPS22918DBVT](https://www.flux.ai/lcsc/tps22918dbvt~px0b.md) - Package or Case Code: SOT-23-6_L2.9-W1.6-P0.95-LS2.8-BR - LCSC Part Number: C2680345 - Symbol Style: parametric-v1 - Manufacturer Name: TI(德州仪器) - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: TPS22918DBVT - JLCPCB Part Class: Extended Part - Datasheet URL: https://www.ti.com/lit/ds/symlink/tps22918.pdf?HQS=dis-dk-null-digikeymode-dsf-pf-null-wwe&ts=1780425543228&ref_url=https%253A%252F%252Fwww.ti.com%252Fgeneral%252Fdocs%252Fsuppproductinfo.tsp%253FdistId%253D10%2526gotoUrl%253Dhttps%253A%252F%252Fwww.ti.com%252Flit%252Fgpn%252Ftps22918 - Part Type: Power Distribution Switches - Role: Peripheral Load Switch - Role Details: Independent 3.3 V rail gating with quick output discharge - Functional Group: Peripheral Power Gates **Pins:** - CT [pin 4] - GND [pin 2] - ON [pin 3] - QOD [pin 5] - VIN [pin 1] - VOUT [pin 6] ### U11 — [TPS22918DBVT](https://www.flux.ai/lcsc/tps22918dbvt~px0b.md) - Package or Case Code: SOT-23-6_L2.9-W1.6-P0.95-LS2.8-BR - LCSC Part Number: C2680345 - Symbol Style: parametric-v1 - Manufacturer Name: TI(德州仪器) - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: TPS22918DBVT - JLCPCB Part Class: Extended Part - Datasheet URL: https://www.ti.com/lit/ds/symlink/tps22918.pdf?HQS=dis-dk-null-digikeymode-dsf-pf-null-wwe&ts=1780425543228&ref_url=https%253A%252F%252Fwww.ti.com%252Fgeneral%252Fdocs%252Fsuppproductinfo.tsp%253FdistId%253D10%2526gotoUrl%253Dhttps%253A%252F%252Fwww.ti.com%252Flit%252Fgpn%252Ftps22918 - Part Type: Power Distribution Switches - Role: Peripheral Load Switch - Role Details: Independent 3.3 V rail gating with quick output discharge - Functional Group: Peripheral Power Gates **Pins:** - CT [pin 4] - GND [pin 2] - ON [pin 3] - QOD [pin 5] - VIN [pin 1] - VOUT [pin 6] ### U12 — [TPS22918DBVT](https://www.flux.ai/lcsc/tps22918dbvt~px0b.md) - Package or Case Code: SOT-23-6_L2.9-W1.6-P0.95-LS2.8-BR - LCSC Part Number: C2680345 - Symbol Style: parametric-v1 - Manufacturer Name: TI(德州仪器) - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: TPS22918DBVT - JLCPCB Part Class: Extended Part - Datasheet URL: https://www.ti.com/lit/ds/symlink/tps22918.pdf?HQS=dis-dk-null-digikeymode-dsf-pf-null-wwe&ts=1780425543228&ref_url=https%253A%252F%252Fwww.ti.com%252Fgeneral%252Fdocs%252Fsuppproductinfo.tsp%253FdistId%253D10%2526gotoUrl%253Dhttps%253A%252F%252Fwww.ti.com%252Flit%252Fgpn%252Ftps22918 - Part Type: Power Distribution Switches - Role: Peripheral Load Switch - Role Details: Independent 3.3 V rail gating with quick output discharge - Functional Group: Peripheral Power Gates **Pins:** - CT [pin 4] - GND [pin 2] - ON [pin 3] - QOD [pin 5] - VIN [pin 1] - VOUT [pin 6] ### U13 — [TPS22918DBVT](https://www.flux.ai/lcsc/tps22918dbvt~px0b.md) - Package or Case Code: SOT-23-6_L2.9-W1.6-P0.95-LS2.8-BR - LCSC Part Number: C2680345 - Symbol Style: parametric-v1 - Manufacturer Name: TI(德州仪器) - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: TPS22918DBVT - JLCPCB Part Class: Extended Part - Datasheet URL: https://www.ti.com/lit/ds/symlink/tps22918.pdf?HQS=dis-dk-null-digikeymode-dsf-pf-null-wwe&ts=1780425543228&ref_url=https%253A%252F%252Fwww.ti.com%252Fgeneral%252Fdocs%252Fsuppproductinfo.tsp%253FdistId%253D10%2526gotoUrl%253Dhttps%253A%252F%252Fwww.ti.com%252Flit%252Fgpn%252Ftps22918 - Part Type: Power Distribution Switches - Role: Peripheral Load Switch - Role Details: Independent 3.3 V rail gating with quick output discharge - Functional Group: Peripheral Power Gates **Pins:** - CT [pin 4] - GND [pin 2] - ON [pin 3] - QOD [pin 5] - VIN [pin 1] - VOUT [pin 6] ### U14 — [PCA9306DCUT](https://www.flux.ai/jecstronic/pca9306dcut~atk.md) - Manufacturer Part Number: PCA9306DCUT - Part Type: Integrated Circuit - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Name: Texas Instruments - Datasheet URL: https://www.ti.com/general/docs/suppproductinfo.tsp?distId=10&gotoUrl=https%3A%2F%2Fwww.ti.com%2Flit%2Fgpn%2Fpca9306 - Role: I2C Level Translator - Role Details: Bidirectional open-drain translation between 3.3 V MCU and VTGT - Functional Group: Protected Wired Debug **Pins:** - EN [pin 8] - GND [pin 4] - SCL1 [pin 2] - SCL2 [pin 6] - SDA1 [pin 3] - SDA2 [pin 5] - VREF1 [pin 1] - VREF2 [pin 7] ### U15 — [SN74LVC1T45DRLR](https://www.flux.ai/lcsc/sn74lvc1t45drlr~1iwi.md) - Manufacturer Part Number: SN74LVC1T45DRLR - JLCPCB Part Class: Extended Part - Part Type: Translators / Level Shifters - Manufacturer Name: TI(德州仪器) - Package or Case Code: SOT-5X3-6_W1.6-L1.2-P0.50-LS1.6-BL - LCSC Part Number: C352970 - Role: Direction-Controlled Level Translator - Role Details: No auto-direction on SPI; fixed or explicit DIR control per signal - Functional Group: Protected Wired Debug **Pins:** - A [pin 3] - B [pin 4] - DIR [pin 5] - GND [pin 2] - VCCA [pin 1] - VCCB [pin 6] ### U16 — [SN74LVC1T45DRLR](https://www.flux.ai/lcsc/sn74lvc1t45drlr~1iwi.md) - Manufacturer Part Number: SN74LVC1T45DRLR - JLCPCB Part Class: Extended Part - Part Type: Translators / Level Shifters - Manufacturer Name: TI(德州仪器) - Package or Case Code: SOT-5X3-6_W1.6-L1.2-P0.50-LS1.6-BL - LCSC Part Number: C352970 - Role: Direction-Controlled Level Translator - Role Details: No auto-direction on SPI; fixed or explicit DIR control per signal - Functional Group: Protected Wired Debug **Pins:** - A [pin 3] - B [pin 4] - DIR [pin 5] - GND [pin 2] - VCCA [pin 1] - VCCB [pin 6] ### U17 — [SN74LVC1T45DRLR](https://www.flux.ai/lcsc/sn74lvc1t45drlr~1iwi.md) - Manufacturer Part Number: SN74LVC1T45DRLR - JLCPCB Part Class: Extended Part - Part Type: Translators / Level Shifters - Manufacturer Name: TI(德州仪器) - Package or Case Code: SOT-5X3-6_W1.6-L1.2-P0.50-LS1.6-BL - LCSC Part Number: C352970 - Role: Direction-Controlled Level Translator - Role Details: No auto-direction on SPI; fixed or explicit DIR control per signal - Functional Group: Protected Wired Debug **Pins:** - A [pin 3] - B [pin 4] - DIR [pin 5] - GND [pin 2] - VCCA [pin 1] - VCCB [pin 6] ### U18 — [SN74LVC1T45DRLR](https://www.flux.ai/lcsc/sn74lvc1t45drlr~1iwi.md) - Manufacturer Part Number: SN74LVC1T45DRLR - JLCPCB Part Class: Extended Part - Part Type: Translators / Level Shifters - Manufacturer Name: TI(德州仪器) - Package or Case Code: SOT-5X3-6_W1.6-L1.2-P0.50-LS1.6-BL - LCSC Part Number: C352970 - Role: Direction-Controlled Level Translator - Role Details: No auto-direction on SPI; fixed or explicit DIR control per signal - Functional Group: Protected Wired Debug **Pins:** - A [pin 3] - B [pin 4] - DIR [pin 5] - GND [pin 2] - VCCA [pin 1] - VCCB [pin 6] ### U19 — [SN74LVC1T45DRLR](https://www.flux.ai/lcsc/sn74lvc1t45drlr~1iwi.md) - Manufacturer Part Number: SN74LVC1T45DRLR - JLCPCB Part Class: Extended Part - Part Type: Translators / Level Shifters - Manufacturer Name: TI(德州仪器) - Package or Case Code: SOT-5X3-6_W1.6-L1.2-P0.50-LS1.6-BL - LCSC Part Number: C352970 - Role: Direction-Controlled Level Translator - Role Details: No auto-direction on SPI; fixed or explicit DIR control per signal - Functional Group: Protected Wired Debug **Pins:** - A [pin 3] - B [pin 4] - DIR [pin 5] - GND [pin 2] - VCCA [pin 1] - VCCB [pin 6] ### U2 — [BQ25895RTWT](https://www.flux.ai/lcsc/bq25895rtwt~paja.md) - Datasheet URL: https://www.ti.com/general/docs/suppproductinfo.tsp?distId=10&gotoUrl=https%3A%2F%2Fwww.ti.com%2Flit%2Fgpn%2Fbq25895 - Part Type: Battery Management ICs - Manufacturer Part Number: BQ25895RTWT - Manufacturer Name: TI(德州仪器) - Package or Case Code: WQFN-24_L4.0-W4.0-P0.50-TL-EP2.7 - Symbol Style: parametric-v1 - LCSC Part Number: C2861263 - JLCPCB Part Class: Extended Part - Role: Battery Charger and Power Path - Role Details: Sized around ~2.9 A theoretical depleted-cell combined peak; firmware interlocks required - Functional Group: Power Input and Charging **Pins:** - ~{CE} [pin 9] - ~{QON} [pin 12] - BAT [pin 13] - BAT [pin 14] - BTST [pin 21] - D– [pin 3] - D+ [pin 2] - DSEL [pin 24] - EP [pin 25] - ILIM [pin 10] - INT [pin 7] - OTG [pin 8] - PGND [pin 17] - PGND [pin 18] - PMID [pin 23] - REGN [pin 22] - SCL [pin 5] - SDA [pin 6] - STAT [pin 4] - SW [pin 20] - SW [pin 19] - SYS [pin 15] - SYS [pin 16] - TS [pin 11] - VBUS [pin 1] ### U20 — [SN74LVC1T45DRLR](https://www.flux.ai/lcsc/sn74lvc1t45drlr~1iwi.md) - Manufacturer Part Number: SN74LVC1T45DRLR - JLCPCB Part Class: Extended Part - Part Type: Translators / Level Shifters - Manufacturer Name: TI(德州仪器) - Package or Case Code: SOT-5X3-6_W1.6-L1.2-P0.50-LS1.6-BL - LCSC Part Number: C352970 - Role: Direction-Controlled Level Translator - Role Details: No auto-direction on SPI; fixed or explicit DIR control per signal - Functional Group: Protected Wired Debug **Pins:** - A [pin 3] - B [pin 4] - DIR [pin 5] - GND [pin 2] - VCCA [pin 1] - VCCB [pin 6] ### U21 — [TSOP38438](https://www.flux.ai/lcsc/tsop38438~sn8s.md) - Manufacturer Part Number: TSOP38438 - JLCPCB Part Class: Extended Part - Product Info Url: https://lcsc.com/product-detail/Infrared-Receivers_VISHAY_TSOP38438_TSOP38438_C145271.html - Manufacturer Name: VISHAY(威世) - Package or Case Code: SENSOR-TG_TSOP38236 - Part Type: Infrared remote receiver - LCSC Part Number: C145271 - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2410121733_Vishay-Intertech-TSOP38438_C145271.pdf - Role: IR Receiver - Role Details: Power-gated IR receive channel - Functional Group: Infrared **Pins:** - GND [pin 2] - OUT [pin 1] - VS [pin 3] ### U22 — [TUSB320LAIRWBR](https://www.flux.ai/lcsc/tusb320lairwbr~4mzy.md) - Part Type: Battery Management ICs - Manufacturer Name: TI(德州仪器) - Manufacturer Part Number: TUSB320LAIRWBR - LCSC Part Number: C132554 - JLCPCB Part Class: Extended Part - Product Info Url: https://lcsc.com/product-detail/PMIC-Battery-Management_TI_TUSB320LAIRWBR_TUSB320LAIRWBR_C132554.html - Package or Case Code: X2QFN-12_L1.6-W1.6-P0.40-TL - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/user-uploaded/3b78bec1ba7fbf4767897d4645a9894b0591efca458e28fc84ee299e5427e44c.pdf - Role: Sensing (Shunt) - Role Details: Configured UFP/sink only; reports default/1.5A/3A source current to firmware - Functional Group: USB-C Input and Native USB **Pins:** - ADDR [pin 5] - CC1 [pin 1] - CC2 [pin 2] - EN_N [pin 11] - GND [pin 10] - ID [pin 9] - INT_N/OUT3 [pin 6] - PORT [pin 3] - SCL/OUT2 [pin 8] - SDA/OUT1 [pin 7] - VBUS_DET [pin 4] - VDD [pin 12] ### U3 — [TPS630702RNMR](https://www.flux.ai/lcsc/tps630702rnmr~ooxg.md) - JLCPCB Part Class: Extended Part - LCSC Part Number: C2071354 - Package or Case Code: VQFN-15_L3.0-W2.5-P0.50-BL - Part Type: DC-DC Converters - Manufacturer Part Number: TPS630702RNMR - Manufacturer Name: TI(德州仪器) - Role: Buck-Boost Regulator - Role Details: 3.3 V rail; 1.58 A peak allowance, >=2 A continuous target - Functional Group: 3V3 Power **Pins:** - EN [pin 14] - FB [pin 5] - FB2 [pin 6] - GND [pin 4] - L1 [pin 11] - L2 [pin 9] - PG [pin 2] - PGND [pin 10] - PS/SYNC [pin 1] - VAUX [pin 3] - VIN [pin 12] - VOUT [pin 7] - VSEL [pin 15] ### U4 — [TPS61022RWUR](https://www.flux.ai/lcsc/tps61022rwur~w0w8.md) - Package or Case Code: VQFN-7_L2.0-W2.0-P0.55-TL_RWU - Part Type: DC-DC Converters - Manufacturer Part Number: TPS61022RWUR - LCSC Part Number: C915088 - Manufacturer Name: TI(德州仪器) - JLCPCB Part Class: Extended Part - Role: Power Conversion - Role Details: 5 V / 500 mA target rail at 3.0 V battery; default disabled - Functional Group: 5V Target Power **Pins:** - EN [pin 5] - FB [pin 4] - GND [pin 1] - MODE [pin 6] - SW [pin 2] - VIN [pin 7] - VOUT [pin 3] ### U5 — [TPS2553DBVR-1](https://www.flux.ai/lcsc/tps2553dbvr-1~yr7u.md) - Manufacturer Name: TI(德州仪器) - Package or Case Code: SOT-23-6_L2.9-W1.6-P0.95-LS2.8-BL - LCSC Part Number: C111738 - Manufacturer Part Number: TPS2553DBVR-1 - JLCPCB Part Class: Extended Part - Product Info Url: https://lcsc.com/product-detail/PMIC-Power-Distribution-Switches_TI_TPS2553DBVR-1_TPS2553DBVR-1_C111738.html - Part Type: Power Distribution Switches - Datasheet URL: https://lcsc.com/product-detail/PMIC-Power-Distribution-Switches_TI_TPS2553DBVR-1_TPS2553DBVR-1_C111738.html - Role: Current-Limited Load Switch - Role Details: Protected 5 V target/expansion output set near 500 mA - Functional Group: 5V Target Power **Pins:** - ~{FAULT} [pin 4] - EN [pin 3] - GND [pin 2] - ILIM [pin 5] - IN [pin 1] - OUT [pin 6] ### U6 — [MAX17048G+T10](https://www.flux.ai/lcsc/max17048gplust10~jvyd.md) - Manufacturer Name: MAXIM - Manufacturer Part Number: MAX17048G+T10 - LCSC Part Number: C2682616 - Package or Case Code: DFN-8_L2.0-W2.0-P0.50-BL-EP - Datasheet URL: https://www.analog.com/media/en/technical-documentation/data-sheets/MAX17048-MAX17049.pdf - Part Type: Battery Management ICs - Symbol Style: parametric-v1 - JLCPCB Part Class: Extended Part - Role: Fuel Gauge - Role Details: ModelGauge battery state monitoring without series shunt - Functional Group: Battery Monitoring **Pins:** - ~{ALRT} [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] ### U7 — [INA219BIDR](https://www.flux.ai/lcsc/ina219bidr~jxtw.md) - Datasheet URL: https://www.ti.com/lit/ds/symlink/ina219.pdf?HQS=dis-dk-null-digikeymode-dsf-pf-null-wwe&ts=1780319426350&ref_url=https%253A%252F%252Fwww.ti.com%252Fgeneral%252Fdocs%252Fsuppproductinfo.tsp%253FdistId%253D10%2526gotoUrl%253Dhttps%253A%252F%252Fwww.ti.com%252Flit%252Fgpn%252Fina219 - Package or Case Code: SOIC-8_L5.0-W4.0-P1.27-LS6.1-BL - LCSC Part Number: C2155799 - Symbol Style: parametric-v1 - Manufacturer Part Number: INA219BIDR - JLCPCB Part Class: Extended Part - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Power Management - Manufacturer Name: TI(德州仪器) - Role: Rail Monitor - Role Details: Measures 3.3 V system rail through external low-ohmic shunt - Functional Group: 3V3 Power **Pins:** - A0 [pin 2] - A1 [pin 1] - GND [pin 6] - IN– [pin 7] - IN+ [pin 8] - SCL [pin 4] - SDA [pin 3] - VS [pin 5] ### U8 — [TMP117AIDRVR](https://www.flux.ai/lcsc/tmp117aidrvr~2nvt.md) - Datasheet URL: https://www.lcsc.com/datasheet/C699536.pdf?spm=wm.sxq.inf.ggs&lcsc_vid=FlkNBAIDRQULVABfFAVZBgZVFVZYBgZSQ1NeBVIFQlExVlNeR1JcV11VTlBZXjsOAxUeFF5JWBYZEEoKFBINSQcJGk4dAgUUFAk%3D - LCSC Part Number: C699536 - Operating Temperature: -55°C ~ 150°C (TA) - Sensor Type: Digital, Local - JLCPCB Part Class: Extended Part - Manufacturer Part Number: TMP117AIDRVR - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Name: TI(德州仪器) - Package or Case Code: WSON-6_L2.0-W2.0-P0.65-TL-EP - Voltage Supply: 1.8V ~ 5.5V - Part Type: Temperature Sensors - Symbol Style: parametric-v1 - Role: Temperature Monitor - Role Details: Place thermally near ESP32 module for performance-profile monitoring - Functional Group: MCU Core **Pins:** - ADD0 [pin 4] - ALERT [pin 3] - EP [pin 7] - GND [pin 2] - SCL [pin 1] - SDA [pin 6] - V+ [pin 5] ### U9 — [TPS22918DBVT](https://www.flux.ai/lcsc/tps22918dbvt~px0b.md) - Package or Case Code: SOT-23-6_L2.9-W1.6-P0.95-LS2.8-BR - LCSC Part Number: C2680345 - Symbol Style: parametric-v1 - Manufacturer Name: TI(德州仪器) - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: TPS22918DBVT - JLCPCB Part Class: Extended Part - Datasheet URL: https://www.ti.com/lit/ds/symlink/tps22918.pdf?HQS=dis-dk-null-digikeymode-dsf-pf-null-wwe&ts=1780425543228&ref_url=https%253A%252F%252Fwww.ti.com%252Fgeneral%252Fdocs%252Fsuppproductinfo.tsp%253FdistId%253D10%2526gotoUrl%253Dhttps%253A%252F%252Fwww.ti.com%252Flit%252Fgpn%252Ftps22918 - Part Type: Power Distribution Switches - Role: Peripheral Load Switch - Role Details: Independent 3.3 V rail gating with quick output discharge - Functional Group: Peripheral Power Gates **Pins:** - CT [pin 4] - GND [pin 2] - ON [pin 3] - QOD [pin 5] - VIN [pin 1] - VOUT [pin 6] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/macswim/rugged-modular-security-toolkit-e4b4~2w](https://www.flux.ai/macswim/rugged-modular-security-toolkit-e4b4~2w).* --- *Generated from [https://www.flux.ai/macswim/rugged-modular-security-toolkit-e4b4~2w](https://www.flux.ai/macswim/rugged-modular-security-toolkit-e4b4~2w)*