# USB-C WiFi BLE Environmental Sensor Node ## Description Low-power USB-C environmental sensor node with ESP32 Wi-Fi/BLE, digital temperature/humidity sensing, and protected 5 V input power path. ## Project Details - **Owner:** leemon0111 - **Created:** 5/17/2026 - **Last Updated:** 5/17/2026 - **Visibility:** Public ## Key Components ### D1 — [USBLC6-4SC6](https://www.flux.ai/kicad-part-library/usblc6-4sc6~cr3.md) - Package or Case Code: SOT-23-6 - Manufacturer Part Number: USBLC6-4SC6 - Datasheet URL: https://www.st.com/resource/en/datasheet/usblc6-4.pdf - Manufacturer Name: Texas Instruments Inc. - Part Type: Protection **Pins:** - GND [pin 2] - I/O1 [pin 1] - I/O2 [pin 3] - I/O3 [pin 4] - I/O4 [pin 6] - VBUS [pin 5] ### D2 — [TPD1E05U06DPYR](https://www.flux.ai/lcsc/tpd1e05u06dpyr~sh59.md) - License: https://creativecommons.org/licenses/by/4.0/ - JLCPCB Part Class: Extended Part - Manufacturer Part Number: TPD1E05U06DPYR - Datasheet URL: https://www.ti.com/lit/ds/symlink/tpd1e05u06.pdf - Package or Case Code: DFN1006-2L-RD - LCSC Part Number: C2937017 - Manufacturer Name: TPD1E05U06DPYR - Part Type: ESD and Surge Protection (TVS/ESD) **Pins:** - A [pin 2] - C [pin 1] ### D3 — [5988070107F](https://www.flux.ai/adrian95/5988070107f~6pj.md) - Manufacturer Part Number: 5988070107F - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Name: Dialight - Datasheet URL: https://s3-us-west-2.amazonaws.com/catsy.557/DIA_Selector_Guide_SMD_060820.pdf - Part Type: LED **Pins:** - A [pin 2] - K [pin 1] ### ESP1 — [ESP32-C3-WROOM-02-N4](https://www.flux.ai/vasy_skral/esp32-c3-wroom-02-n4~tqi.md) - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: ESP32-C3-WROOM-02-N4 - Manufacturer Name: Espressif Systems - Part Type: Module - Symbol Style: Parametric - Datasheet URL: https://www.espressif.com/sites/default/files/documentation/esp32-c3-wroom-02_datasheet_en.pdf **Pins:** - 3V3 [pin 1] - EN [pin 2] - GND [pin 38] - GND [pin 32] - GND [pin 37] - GND [pin 22] - GND [pin 19] - GND [pin 34] - GND [pin 31] - GND [pin 21] - GND [pin 39] - GND [pin 36] - GND [pin 9] - GND [pin 25] - GND [pin 33] - GND [pin 29] - GND [pin 30] - GND [pin 28] - GND [pin 20] - GND [pin 35] - GND [pin 26] - GND [pin 24] - GND [pin 23] - GND [pin 27] - IO0 [pin 18] - IO1 [pin 17] - IO10 [pin 10] - IO18 [pin 13] - IO19 [pin 14] - IO2 [pin 16] - IO3 [pin 15] - IO4 [pin 3] - IO5 [pin 4] - IO6 [pin 5] - IO7 [pin 6] - IO8 [pin 7] - IO9 [pin 8] - RXD [pin 11] - TXD [pin 12] ### IC1 — [TPS25210LRPWR](https://www.flux.ai/adrian95/tps25210lrpwr~9ww.md) - Datasheet URL: https://www.ti.com/lit/ds/symlink/tps2521.pdf?ts=1625110620252&ref_url=https%253A%252F%252Fwww.ti.com%252Fstore%252Fti%252Fen%252Fp%252Fproduct%252F%253Fp%253DTPS25210LRPWR - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Name: Texas Instruments - Package or Case Code: TPS25210LRPWR - Part Type: Power Management - Manufacturer Part Number: TPS25210LRPWR **Pins:** - DVDT_1 [pin 7] - DVDT_2 [pin 14] - EN/UVLO_1 [pin 1] - EN/UVLO_2 [pin 12] - GND [pin 8] - ILM [pin 9] - IN [pin 5] - ITIMER_1 [pin 10] - ITIMER_2 [pin 11] - OUT [pin 6] - OVCSEL [pin 2] - PG [pin 3] - PGTH_1 [pin 4] - PGTH_2 [pin 13] ### J1 — [USB4105-GF-A](https://www.flux.ai/adrian95/usb4105-gf-a~im9.md) - Manufacturer Name: GCT - Symbol Style: parametric-v1 - Manufacturer Name: GCT - Manufacturer Part Number: USB4105-GF-A - Part Type: USB C - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://gct.co/files/specs/usb4105-spec.pdf **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] ### SW1 — [TS-1088-AR02016](https://www.flux.ai/lcsc/ts-1088-ar02016~e3n1.md) - Manufacturer Part Number: TS-1088-AR02016 - Manufacturer Name: XUNPU(讯普) - JLCPCB Part Class: Extended Part - Part Type: Tactile Switches - 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 - Package or Case Code: SW-SMD_L3.9-W3.0-P4.45 - 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) - LCSC Part Number: C720477 - Product Info Url: https://lcsc.com/product-detail/Tactile-Switches_XUNPU-TS-1088-AR02016_C720477.html - 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 - Manufacturer Name: XUNPU(讯普) - JLCPCB Part Class: Extended Part - Manufacturer Part Number: TS-1088-AR02016 **Pins:** - 1 [pin 1] - 2 [pin 2] ### U3 — [AP63203WU-7](https://www.flux.ai/adrian95/ap63203wu-7~o8a.md) - Manufacturer Part Number: AP63203WU-7 - Datasheet URL: https://www.diodes.com/assets/Datasheets/AP63200-AP63201-AP63203-AP63205.pdf - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Integrated Circuit - Manufacturer Name: Diodes Incorporated **Pins:** - BST [pin 6] - EN [pin 2] - FB [pin 1] - GND [pin 4] - SW [pin 5] - VIN [pin 3] ### U4 — [SHT41-AD1B-R2](https://www.flux.ai/adrian95/sht41-ad1b-r2.md) - Manufacturer Name: Sensirion - Manufacturer Part Number: SHT41-AD1B-R2 - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://sensirion.com/media/documents/33FD6951/67EB9032/HT_DS_Datasheet_SHT4x_5.pdf - Part Type: Sensors **Pins:** - SCL [pin 2] - SDA [pin 1] - VDD [pin 3] - VSS [pin 4] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/leemon0111/usb-c-wifi-ble-environmental-sensor-node~xp](https://www.flux.ai/leemon0111/usb-c-wifi-ble-environmental-sensor-node~xp).* --- *Generated from [https://www.flux.ai/leemon0111/usb-c-wifi-ble-environmental-sensor-node~xp](https://www.flux.ai/leemon0111/usb-c-wifi-ble-environmental-sensor-node~xp)*