# 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://flux.ai/kicad-part-library/usblc6-4sc6~cr3.md)

- Datasheet URL: https://www\.st\.com/resource/en/datasheet/usblc6\-4\.pdf
- Package or Case Code: SOT\-23\-6
- Manufacturer Part Number: USBLC6\-4SC6
- 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://flux.ai/lcsc/tpd1e05u06dpyr~sh59.md)

- Manufacturer Name: TPD1E05U06DPYR
- Part Type: ESD and Surge Protection \(TVS/ESD\)
- JLCPCB Part Class: Extended Part
- License: https://creativecommons\.org/licenses/by/4\.0/
- Datasheet URL: https://www\.ti\.com/lit/ds/symlink/tpd1e05u06\.pdf
- Manufacturer Part Number: TPD1E05U06DPYR
- LCSC Part Number: C2937017
- Package or Case Code: DFN1006\-2L\-RD

**Pins:**
- A [pin 2]
- C [pin 1]

### D3 — [5988070107F](https://flux.ai/adrian95/5988070107f~6pj.md)

- Part Type: LED
- Datasheet URL: https://s3\-us\-west\-2\.amazonaws\.com/catsy\.557/DIA\_Selector\_Guide\_SMD\_060820\.pdf
- Manufacturer Part Number: 5988070107F
- Manufacturer Name: Dialight
- License: https://creativecommons\.org/licenses/by/4\.0/

**Pins:**
- A [pin 2]
- K [pin 1]

### ESP1 — [ESP32\-C3\-WROOM\-02\-N4](https://flux.ai/vasy_skral/esp32-c3-wroom-02-n4~tqi.md)

- Part Type: Module
- Manufacturer Part Number: ESP32\-C3\-WROOM\-02\-N4
- Symbol Style: Parametric
- License: https://creativecommons\.org/licenses/by/4\.0/
- Datasheet URL: https://www\.espressif\.com/sites/default/files/documentation/esp32\-c3\-wroom\-02\_datasheet\_en\.pdf
- Manufacturer Name: Espressif Systems

**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://flux.ai/adrian95/tps25210lrpwr~9ww.md)

- Manufacturer Name: Texas Instruments
- 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
- Part Type: Power Management
- Package or Case Code: TPS25210LRPWR
- Manufacturer Part Number: TPS25210LRPWR
- License: https://creativecommons\.org/licenses/by/4\.0/

**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://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://gct\.co/files/specs/usb4105\-spec\.pdf
- Manufacturer Part Number: USB4105\-GF\-A

**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://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

**Pins:**
- 1 [pin 1]
- 2 [pin 2]

### SW2 — [TS\-1088\-AR02016](https://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

**Pins:**
- 1 [pin 1]
- 2 [pin 2]

### U3 — [AP63203WU\-7](https://flux.ai/adrian95/ap63203wu-7~o8a.md)

- Manufacturer Part Number: AP63203WU\-7
- Manufacturer Name: Diodes Incorporated
- Datasheet URL: https://www\.diodes\.com/assets/Datasheets/AP63200\-AP63201\-AP63203\-AP63205\.pdf
- Part Type: Integrated Circuit
- License: https://creativecommons\.org/licenses/by/4\.0/

**Pins:**
- BST [pin 6]
- EN [pin 2]
- FB [pin 1]
- GND [pin 4]
- SW [pin 5]
- VIN [pin 3]

### U4 — [SHT41\-AD1B\-R2](https://flux.ai/adrian95/sht41-ad1b-r2.md)

- Part Type: Sensors
- License: https://creativecommons\.org/licenses/by/4\.0/
- Manufacturer Part Number: SHT41\-AD1B\-R2
- Datasheet URL: https://sensirion\.com/media/documents/33FD6951/67EB9032/HT\_DS\_Datasheet\_SHT4x\_5\.pdf
- Manufacturer Name: Sensirion

**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://flux\.ai/leemon0111/usb\-c\-wifi\-ble\-environmental\-sensor\-node\~xp](https://flux.ai/leemon0111/usb-c-wifi-ble-environmental-sensor-node~xp).*

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*Generated from [https://flux\.ai/leemon0111/usb\-c\-wifi\-ble\-environmental\-sensor\-node\~xp](https://flux.ai/leemon0111/usb-c-wifi-ble-environmental-sensor-node~xp)*