# Industrial WiFi BLE T-RH Node ## Description USB-C 5 V powered industrial environmental sensor node using an ultra-low-power WiFi/BLE MCU, digital temperature/humidity sensor, and protected 5 V input sized for 0.5–3 A USB-C sources. ## Project Details - **Owner:** rockhoundgo - **Created:** 6/5/2026 - **Last Updated:** 6/5/2026 - **Visibility:** Public - **Domain:** Industrial environmental monitoring - **Operating Temperature:** Industrial target; final range depends on selected parts - **Power Requirements:** USB-C default 5 V sink; input protection for reverse/OVP/UVLO/OCP; planned for 0.5–3 A sources - **Operating Voltage:** USB-C 5 V input, regulated 3.3 V system rail - **Connectivity:** 2.4 GHz 802.11 b/g/n WiFi plus BLE 5.x ## Key Components ### D1 — [USBLC6-2SC6](https://www.flux.ai/lcsc/usblc6-2sc6~2e9x.md) - Power: 150W - LCSC Part Number: C2687116 - Role: ESD Protection - JLCPCB Part Class: Extended Part - Peak Pulse Current: 5A - Manufacturer Name: UMW(友台半导体) - Part Type: ESD Protection Devices - Datasheet URL: https://www.lcsc.com/datasheet/C2687116.pdf?spm=wm.sxq.inf.ggs&lcsc_vid=FlkNBAIDRQULVABfFAVZBgZVFVZYBgZSQ1NeBVIFQlExVlNRTlhdUVdURFlXXzsOAxUeFF5JWBYZEEoKFBINSQcJGk4dAgUUFAk%3D - Manufacturer Part Number: USBLC6-2SC6 - Maximum Clamping Voltage: 17V - Breakdown Voltage: 6V - Symbol Style: parametric-v1 - Package or Case Code: SOT-23-6_L2.9-W1.6-P0.95-LS2.8-BL - Role Details: USB 2.0 D+/D- low-capacitance TVS array - Operating Temperature: -55°C ~ 125°C (TJ) **Pins:** - GND [pin 2] - I/O1 [pin 1] - I/O1 [pin 6] - 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) - Symbol Style: parametric-v1 - Datasheet URL: https://gct.co/files/drawings/usb4105.pdf - Manufacturer Name: GTC - Part Type: USB C - Purchase Url: https://www.digikey.com/en/products/detail/gct/USB4105-GF-A/11198441 - Role Details: 5 V sink receptacle with CC pull-downs; source capability planned for 0.5–3 A - Manufacturer Part Number: USB4105-GF-A - Role: USB-C Input **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] ### SW1 — [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 - Role Details: Momentary switch from GPIO0/BOOT to ground - JLCPCB Part Class: Extended Part - Role: Boot Button - Package or Case Code: SW-SMD_L3.9-W3.0-P4.45 - Part Type: Tactile Switches - Manufacturer Name: XUNPU(讯普) - 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 **Pins:** - 1 [pin 1] - 2 [pin 2] ### SW2 — [TS-1088-AR02016](https://www.flux.ai/lcsc/ts-1088-ar02016~e3n1.md) - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2409302330_XUNPU-TS-1088-AR02016_C720477.pdf - Manufacturer Name: XUNPU(讯普) - Manufacturer Part Number: TS-1088-AR02016 - Package or Case Code: SW-SMD_L3.9-W3.0-P4.45 - Part Type: Tactile Switches - Product Info Url: https://lcsc.com/product-detail/Tactile-Switches_XUNPU-TS-1088-AR02016_C720477.html - Role Details: Momentary switch from EN to ground - Role: Reset Button - JLCPCB Part Class: Extended Part - LCSC Part Number: C720477 **Pins:** - 1 [pin 1] - 2 [pin 2] ### U1 — [TPS259573DSGT](https://www.flux.ai/adrian95/tps259573dsgt~5ds.md) - Role: Input Protection - Part Type: Integrated Circuit - Datasheet URL: http://www.ti.com/lit/gpn/TPS2595 - Role Details: USB-C VBUS eFuse sized from preliminary ~0.6 A peak 3.3 V load, with margin for 0.5–3 A sources - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: TPS259573DSGT - Manufacturer Name: Texas Instruments **Pins:** - ~EN~/OVLO [pin 2] - ~FLT [pin 6] - DVDT [pin 1] - GND_1 [pin 8] - GND_2 [pin 9] - ILM [pin 7] - IN_1 [pin 3] - IN_2 [pin 4] - OUT [pin 5] ### U2 — [AP2112K-3.3TRG1](https://www.flux.ai/adrian95/ap2112k-33trg1~zlq.md) - Symbol Style: parametric-v1 - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: AP2112K-3.3TRG1 - Role Details: 5 V protected input to 3.3 V rail; datasheet requires 1 µF input and output capacitors - Part Type: Integrated Circuit - Manufacturer Name: Diodes Incorporated - Datasheet URL: https://www.diodes.com/assets/Datasheets/AP2112.pdf - Role: Voltage Regulator **Pins:** - EN [pin 3] - GND [pin 2] - NC [pin 4] - VIN [pin 1] - VOUT [pin 5] ### U3 — [ESP32-C3-MINI-1-N4](https://www.flux.ai/jecstronic/esp32-c3-mini-1-n4~wbz.md) - License: https://creativecommons.org/licenses/by/4.0/ - Role: MCU + Radio - Role Details: 802.11 b/g/n WiFi plus BLE 5.x environmental node controller - Manufacturer Part Number: ESP32-C3-MINI-1-N4 - Symbol Style: parametric-v1 - Datasheet URL: https://www.espressif.com/sites/default/files/documentation/esp32-c3-mini-1_datasheet_en.pdf - Manufacturer Name: Espressif Systems - Part Type: Integrated Circuit **Pins:** - 3V3 [pin 3] - EN [pin 8] - GND [pin 51] - GND [pin 36] - GND [pin 49_9] - GND [pin 1] - GND [pin 49_6] - GND [pin 46] - GND [pin 49_3] - GND [pin 43] - GND [pin 49_7] - GND [pin 39] - GND [pin 14] - GND [pin 41] - GND [pin 37] - GND [pin 53] - GND [pin 42] - GND [pin 49_2] - GND [pin 49_1] - GND [pin 45] - GND [pin 11] - GND [pin 38] - GND [pin 52] - GND [pin 2] - GND [pin 48] - GND [pin 49_4] - GND [pin 40] - GND [pin 49_5] - GND [pin 49_8] - GND [pin 44] - GND [pin 47] - GND [pin 50] - IO0 [pin 12] - IO1 [pin 13] - IO10 [pin 16] - IO18 [pin 26] - IO19 [pin 27] - IO2 [pin 5] - IO3 [pin 6] - IO4 [pin 18] - IO5 [pin 19] - IO6 [pin 20] - IO7 [pin 21] - IO8 [pin 22] - IO9 [pin 23] - NC [pin 35] - NC [pin 4] - NC [pin 10] - NC [pin 32] - NC [pin 7] - NC [pin 9] - NC [pin 28] - NC [pin 24] - NC [pin 15] - NC [pin 34] - NC [pin 29] - NC [pin 17] - NC [pin 33] - NC [pin 25] - RXD0 [pin 30] - TXD0 [pin 31] ### U4 — [SHT40-AD1B-R2](https://www.flux.ai/lcsc/sht40-ad1b-r2~frfh.md) - Symbol Style: parametric-v1 - Datasheet URL: https://sensirion.com/media/documents/33FD6951/67EB9032/HT_DS_Datasheet_SHT4x_5.pdf - Part Type: Humidity Sensors/Temperature and Humidity Sensors - Role Details: SHT40 I2C sensor, -40 to 125 °C operating range, 0–100% RH - JLCPCB Part Class: Extended Part - Manufacturer Name: Sensirion AG - Manufacturer Part Number: SHT40-AD1B-R2 - Role: Temperature/Humidity Sensor - Package or Case Code: DFN-4_L1.5-W1.5-P0.8 **Pins:** - EP [pin 5] - 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/rockhoundgo/industrial-wifi-ble-t-rh-node~yy](https://www.flux.ai/rockhoundgo/industrial-wifi-ble-t-rh-node~yy).* --- *Generated from [https://www.flux.ai/rockhoundgo/industrial-wifi-ble-t-rh-node~yy](https://www.flux.ai/rockhoundgo/industrial-wifi-ble-t-rh-node~yy)*