# ESP32-S3 AI Calculator Cable ## Description Compact inline ESP32-S3 USB-C powered OTG cable interface for TI-Nspire CX II calculators ## Project Details - **Owner:** anhony - **Created:** 5/10/2026 - **Last Updated:** 5/10/2026 - **Visibility:** Public - **Copies:** 1 ## Key Components ### D1 — [USBLC6-2SC6](https://www.flux.ai/vasy_skral/usblc6-2sc6~g1b.md) - Manufacturer Name: STMicroelectronics - License: https://creativecommons.org/licenses/by/4.0/ - Role Details: USBLC6-2SC6 placed close to USB-C/mini-USB entry on D+ and D- - Role: ESD Protection - LCSC Part Number: C7519 - Symbol Style: parametric-v1 - Part Type: Protection - Manufacturer Part Number: USBLC6-2SC6 - 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 **Pins:** - GND [pin 2] - I/O1 [pin 6] - I/O1 [pin 1] - I/O2 [pin 3] - I/O2 [pin 4] - VBUS [pin 5] ### J1 — [USB-C 2.0 Receptacle](https://www.flux.ai/vasy_skral/usb-c-2p0-receptacle~1xw.md) - Datasheet URL: https://gct.co/files/drawings/usb4105.pdf - Manufacturer Name: GTC - Role Details: USB 2.0 receptacle with CC1/CC2 5.1k pull-downs; VBUS powers AP2112K VIN - Manufacturer Part Number: USB4105-GF-A - Role: USB-C Input - Symbol Style: parametric-v1 - Part Type: USB C - Purchase Url: https://www.digikey.com/en/products/detail/gct/USB4105-GF-A/11198441 **Pins:** - CC1 [pin 6] - CC2 [pin 12] - D- [pin 7] - D- [pin 9] - D+ [pin 10] - D+ [pin 8] - GND [pin 1] - GND [pin 16] - GND [pin 15] - GND [pin 2] - SBU1 [pin 11] - SBU2 [pin 5] - VBUS [pin 3] - VBUS [pin 14] - VBUS [pin 4] - VBUS [pin 13] ### J2 — [UX60SC-MB-5ST(80)](https://www.flux.ai/adrian95/ux60sc-mb-5st80~r4c.md) - Manufacturer Name: Hirose Electric Co Ltd - Part Type: Connector - Manufacturer Part Number: UX60SC-MB-5ST(80) - License: https://creativecommons.org/licenses/by/4.0/ - Role Details: Hardwired mini-USB male pigtail attachment; ID tied to GND to force TI-Nspire host mode - Role: Mini USB OTG Cable - Datasheet URL: https://mm.digikey.com/Volume0/opasdata/d220001/medias/docus/961/UX60S.pdf **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] - 4 [pin 4] - 5 [pin 5] ### LED1 — [LTST-C190KRKT](https://www.flux.ai/adrian95/ltst-c190krkt~3pw.md) - Role: Status Indicator - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: LTST-C190KRKT - Part Type: LED - Datasheet URL: https://optoelectronics.liteon.com/upload/download/DS-22-99-0151/LTST-C190KRKT.pdf - Role Details: 0603 red LED driven from ESP32 GPIO through R5 - Manufacturer Name: Lite-On Inc. **Pins:** - A [pin 2] - K [pin 1] ### SW1 — [SW_Push](https://www.flux.ai/adrian95/swpush~f5x.md) - Role: Boot Button - Manufacturer Part Number: 1301.9314 - Manufacturer Name: Schurter Inc. - Datasheet URL: https://us.schurter.com/en/datasheet/typ_6x6_mm_tact_switches.pdf - Part Type: Switch - Role Details: Momentary switch from GPIO0 BOOT to GND **Pins:** - 1 - 2 ### SW2 — [SW_Push](https://www.flux.ai/adrian95/swpush~f5x.md) - Part Type: Switch - Role Details: Momentary switch from EN/CHIP_PU to GND - Datasheet URL: https://us.schurter.com/en/datasheet/typ_6x6_mm_tact_switches.pdf - Role: Reset Button - Manufacturer Name: Schurter Inc. - Manufacturer Part Number: 1301.9314 **Pins:** - 1 - 2 ### U1 — [ESP32-S3-WROOM-1-N16R8](https://www.flux.ai/lcsc/esp32-s3-wroom-1-n16r8~s9kh.md) - Role Details: ESP32-S3 module; native USB D+/D- used directly; antenna must be at board edge with copper keepout - Current - Receiving: 95mA ~ 97mA - JLCPCB Part Class: Extended Part - Frequency: 2.4GHz - Package or Case Code: WIRELM-SMD_ESP32-S3-WROOM-1 - Supply Voltage: 3V ~ 3.6V - Current - Transmitting: 285mA ~ 355mA - Role: Main MCU - Manufacturer Part Number: ESP32-S3-WROOM-1-N16R8 - Manufacturer Name: ESPRESSIF(乐鑫) - Operating Temperature: -40°C ~ 65°C (TA) - LCSC Part Number: C2913202 **Pins:** - 3V3 [pin 2] - EN [pin 3] - GND [pin 41] - GND [pin 40] - GND [pin 1] - 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] ### U2 — [AP2112K-3.3TRG1](https://www.flux.ai/adrian95/ap2112k-33trg1~zlq.md) - Part Type: Integrated Circuit - License: https://creativecommons.org/licenses/by/4.0/ - Role: Voltage Regulator - Manufacturer Part Number: AP2112K-3.3TRG1 - Symbol Style: parametric-v1 - Datasheet URL: https://www.diodes.com/assets/Datasheets/AP2112.pdf - Role Details: USB-C VBUS to 3.3V LDO; EN tied to VIN; 10uF input and output capacitors - Manufacturer Name: Diodes Incorporated **Pins:** - EN [pin 3] - GND [pin 2] - NC [pin 4] - VIN [pin 1] - VOUT [pin 5] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/anhony/esp32-s3-ai-calculator-cable~xg](https://www.flux.ai/anhony/esp32-s3-ai-calculator-cable~xg).* --- *Generated from [https://www.flux.ai/anhony/esp32-s3-ai-calculator-cable~xg](https://www.flux.ai/anhony/esp32-s3-ai-calculator-cable~xg)*