# USB-C WiFi BLE T-RH Sensor Node ## Description USB-C powered low-power temperature and humidity sensor node with WiFi, Bluetooth LE, protected 5 V input, and digital environmental sensing. ## Project Details - **Owner:** lorenzo2120 - **Created:** 6/1/2026 - **Last Updated:** 6/1/2026 - **Visibility:** Public ## Key Components ### D1 — USBLC6-2SC6 - Operating Temperature: -55°C ~ 125°C (TJ) - Datasheet URL: https://www.lcsc.com/datasheet/C2687116.pdf?spm=wm.sxq.inf.ggs&lcsc_vid=FlkNBAIDRQULVABfFAVZBgZVFVZYBgZSQ1NeBVIFQlExVlNRTlhdUVdURFlXXzsOAxUeFF5JWBYZEEoKFBINSQcJGk4dAgUUFAk%3D - Power: 150W - Role: ESD Protection - Manufacturer Part Number: USBLC6-2SC6 - LCSC Part Number: C2687116 - Package or Case Code: SOT-23-6_L2.9-W1.6-P0.95-LS2.8-BL - Peak Pulse Current: 5A - Breakdown Voltage: 6V - Symbol Style: parametric-v1 - JLCPCB Part Class: Extended Part - Manufacturer Name: UMW(友台半导体) - Part Type: ESD Protection Devices - Role Details: USB 2.0 D+/D- ESD clamp - Maximum Clamping Voltage: 17V **Pins:** - GND [pin 2] - I/O1 [pin 1] - I/O1 [pin 6] - I/O2 [pin 3] - I/O2 [pin 4] - VBUS [pin 5] ### D2 — 0603GBD0790S01 - Role: Status LED - Datasheet URL: https://mm.digikey.com/Volume0/opasdata/d220001/medias/docus/4336/0603GBD0790S01.pdf - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: 0603GBD0790S01 - Role Details: Firmware-controlled low-current activity indicator - Part Type: LED - Manufacturer Name: ORIENTAL TECHNOLOGY **Pins:** - A [pin 2] - K [pin 1] ### J1 — UJ20-C-H-G-SMT-2-P16-TR - Part Type: Connector - Symbol Style: parametric-v1 - License: https://creativecommons.org/licenses/by/4.0/ - Role Details: 5V sink input, USB 2.0 data; connector rated for 0.5-3A source planning - Manufacturer Name: Same Sky (Formerly CUI Devices) - Manufacturer Part Number: UJ20-C-H-G-SMT-2-P16-TR - Mount: Surface Mount - Datasheet URL: https://www.sameskydevices.com/product/resource/uj20-c-h-g-smt-2-p16-tr.pdf - Role: USB-C Connector **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] - SHIELD [pin SH1] - SHIELD__1 [pin SH2] - SHIELD__2 [pin SH3] - SHIELD__3 [pin SH4] - VBUS [pin A4_B9] - VBUS__1 [pin B4_A9] ### SW1 — TS-1088-AR02016 - Product Info Url: https://lcsc.com/product-detail/Tactile-Switches_XUNPU-TS-1088-AR02016_C720477.html - 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 - LCSC Part Number: C720477 - Role: Boot Button - Manufacturer Name: XUNPU(讯普) - JLCPCB Part Class: Extended Part - Package or Case Code: SW-SMD_L3.9-W3.0-P4.45 - Part Type: Tactile Switches - Role Details: ESP32-S3 GPIO0 bootloader entry **Pins:** - 1 [pin 1] - 2 [pin 2] ### SW2 — TS-1088-AR02016 - Role: Reset Button - Role Details: Pull ESP32 EN low for reset - LCSC Part Number: C720477 - 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 - 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 - Part Type: Tactile Switches - Manufacturer Name: XUNPU(讯普) - JLCPCB Part Class: Extended Part **Pins:** - 1 [pin 1] - 2 [pin 2] ### U1 — ESP32-S3-WROOM-1 - Package or Case Code: ESP32-S3-WROOM-1 - Manufacturer Part Number: ESP32-S3-WROOM-1 - Datasheet URL: https://www.espressif.com/sites/default/files/documentation/esp32-s3-wroom-1_wroom-1u_datasheet_en.pdf - Part Type: RF Module - Manufacturer Name: Texas Instruments Inc. - Role Details: Low-power WiFi/BLE environmental sensor node controller - Role: MCU / Radio **Pins:** - 3V3 [pin 2] - EN [pin 3] - GND [pin 1] - GND [pin 40] - GND [pin 41] - 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 — SHT40-AD1B-R2 - JLCPCB Part Class: Extended Part - Datasheet URL: https://sensirion.com/media/documents/33FD6951/67EB9032/HT_DS_Datasheet_SHT4x_5.pdf - Manufacturer Name: Sensirion AG - Package or Case Code: DFN-4_L1.5-W1.5-P0.8 - Role: Temperature/Humidity Sensor - Role Details: Digital T/RH sensor on 3.3V I2C bus - Symbol Style: parametric-v1 - Manufacturer Part Number: SHT40-AD1B-R2 - Part Type: Humidity Sensors/Temperature and Humidity Sensors **Pins:** - EP [pin 5] - SCL [pin 2] - SDA [pin 1] - VDD [pin 3] - VSS [pin 4] ### U3 — TPS25210LRPWR - Manufacturer Name: Texas Instruments - Part Type: Power Management - Role Details: Protected 5V path sized from ~560mA peak load; current limit target 0.6-1.0A - Role: Input Protection - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: TPS25210LRPWR - 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 - Package or Case Code: 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] ### U4 — MP28301GG-Z - Manufacturer Part Number: MP28301GG-Z - Datasheet URL: https://www.monolithicpower.com/en/documentview/productdocument/index/version/2/document_type/Datasheet/lang/en/sku/MP28301 - Manufacturer Name: Monolithic Power Systems - Product Info Url: https://www.monolithicpower.com/en/catalog/product/view/id/2983?utm_source=ultralibrarian&utm_medium=component_search&utm_campaign=listing - Role Details: 5V to 3.3V buck sized for ESP32 WiFi peak current - Role: 3.3V Regulator - Product Image Url: https://www.monolithicpower.com/pub/media/catalog/product/m/p/mp28301_tac.jpg - Package or Case Code: QFN-2x2_MP28301_MNP **Pins:** - CTRL1 [pin 2] - CTRL2 [pin 3] - CTRL3 [pin 4] - CTRL4 [pin 5] - CTRL5 [pin 6] - GND [pin 8] - OUT1 [pin 1] - OUT2 [pin 12] - PG1 [pin 7] - SW [pin 9] - VIN1 [pin 10] - VIN2 [pin 11] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/lorenzo2120/usb-c-wifi-ble-t-rh-sensor-node~pz](https://www.flux.ai/lorenzo2120/usb-c-wifi-ble-t-rh-sensor-node~pz).* --- *Generated from [https://www.flux.ai/lorenzo2120/usb-c-wifi-ble-t-rh-sensor-node~pz](https://www.flux.ai/lorenzo2120/usb-c-wifi-ble-t-rh-sensor-node~pz)*