# Numerous Scarlet TV Glasses ## Description Low-Power USB‑C Environmental Sensor Node with Robust Power Protection and Dual-Radio Connectivity ## Project Details - **Owner:** ramirov - **Created:** 12/2/2025 - **Last Updated:** 12/5/2025 - **Visibility:** Public - **System Architecture:** ```mermaid graph TD A[USB-C Receptacle (CC Sink Resistors)] --> B[ESD Protection (TVS Diodes)] A --> C[eFuse (Reverse Polarity, OVP, UVLO, OCP)] C --> D[Buck Regulator 5V→3.3V] D --> E[3.3V Rail] E --> F[MCU w/ Wi-Fi & BLE] E --> G[Sensor Power Switch] F --> H[I²C Temp/Humidity Sensor] G --> H H --> I[4.7kΩ Pull-ups] subgraph Decoupling D --> J[Bulk Ceramic Caps] F --> K[Local Decoupling Caps] end F --> L[Antenna (Keep-out Zone)] ``` - **Connectivity:** WiFi, Bluetooth, USB - **Domain:** Consumer Electronics - **Operating Voltage:** 5V - **Power Requirements:** USB ## Key Components ### +-12 — [XY301V-A-5.0-3P](https://www.flux.ai/jharwinbarrozo/xy301v-a-50-3p.md) - Manufacturer Part Number: XY301V-A-5.0-3P - Manufacturer Name: Ningbo Xinlaiya Elec. - Datasheet URL: https://www.lcsc.com/datasheet/lcsc_datasheet_2411121455_Ningbo-Xinlaiya-Elec--XY301V-A-5-0-3P_C557652.pdf **Pins:** - PIN1 [pin 1] - PIN2 [pin 2] - PIN3 [pin 3] ### D1 — [VS-KBPC8005](https://www.flux.ai/adrian95/vs-kbpc8005.md) - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: VS-KBPC8005 - Part Type: Diode - Manufacturer Name: Vishay General Semiconductor - Diodes Division - Datasheet URL: https://www.vishay.com/docs/93586/kbpc8series.pdf **Pins:** - - [pin 3] - + [pin 1] - P2 [pin 2] - P4 [pin 4] ### J1 — [XY301V-A-5.0-3P](https://www.flux.ai/jharwinbarrozo/xy301v-a-50-3p.md) - Datasheet URL: https://www.lcsc.com/datasheet/lcsc_datasheet_2411121455_Ningbo-Xinlaiya-Elec--XY301V-A-5-0-3P_C557652.pdf - Manufacturer Name: Ningbo Xinlaiya Elec. - Manufacturer Part Number: XY301V-A-5.0-3P **Pins:** - PIN1 [pin 1] - PIN2 [pin 2] - PIN3 [pin 3] ### J2 — [TB001-500-02BE](https://www.flux.ai/jecstronic/tb001-500-02be.md) - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: TB001-500-02BE - Manufacturer Name: CUI Devices - Part Type: Connector - Datasheet URL: https://www.cuidevices.com/product/resource/tb001-500.pdf **Pins:** - P1 [pin 2] - P2 [pin 1] ### J3 — [XY301V-A-5.0-3P](https://www.flux.ai/jharwinbarrozo/xy301v-a-50-3p.md) - Datasheet URL: https://www.lcsc.com/datasheet/lcsc_datasheet_2411121455_Ningbo-Xinlaiya-Elec--XY301V-A-5-0-3P_C557652.pdf - Manufacturer Name: Ningbo Xinlaiya Elec. - Manufacturer Part Number: XY301V-A-5.0-3P **Pins:** - PIN1 [pin 1] - PIN2 [pin 2] - PIN3 [pin 3] ### U1 — [LM317KCS](https://www.flux.ai/jecstronic/lm317kcs.md) - Part Type: Integrated Circuit - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: LM317KCS - Datasheet URL: https://www.ti.com/lit/ds/symlink/lm317.pdf - Manufacturer Name: Texas Instruments **Pins:** - ADJUST [pin 1] - INPUT [pin 3] - OUTPUT [pin 2] ### U2 — [L7912CV](https://www.flux.ai/adrian95/l7912cv.md) - Manufacturer Name: STMicroelectronics - Manufacturer Part Number: L7912CV - Datasheet URL: https://media.digikey.com/pdf/Data%20Sheets/ST%20Microelectronics%20PDFS/L79xxC_Rev21_May2012.pdf - Part Type: Integrated Circuit - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - GND [pin 1] - VI [pin 2] - VO [pin 3] ### U3 — [L7812CV](https://www.flux.ai/adrian95/l7812cv.md) - Manufacturer Name: STMicroelectronics - Part Type: Integrated Circuit - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: L7812CV - Datasheet URL: https://www.st.com/content/ccc/resource/technical/document/datasheet/41/4f/b3/b0/12/d4/47/88/CD00000444.pdf/files/CD00000444.pdf/jcr:content/translations/en.CD00000444.pdf **Pins:** - GND [pin 2] - IN [pin 1] - OUT [pin 3] ### U4 — [L7805CV](https://www.flux.ai/adrian95/l7805cv.md) - Manufacturer Part Number: L7805CV - Manufacturer Name: STMicroelectronics - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://datasheet.octopart.com/L7805CV-STMicroelectronics-datasheet-5316848.pdf - Part Type: Integrated Circuit **Pins:** - GND [pin 2] - IN [pin 1] - OUT [pin 3] ### U5 — [LM317KCS](https://www.flux.ai/jecstronic/lm317kcs.md) - Datasheet URL: https://www.ti.com/lit/ds/symlink/lm317.pdf - Manufacturer Name: Texas Instruments - Manufacturer Part Number: LM317KCS - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Integrated Circuit **Pins:** - ADJUST [pin 1] - INPUT [pin 3] - OUTPUT [pin 2] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/ramirov/numerous-scarlet-tv-glasses](https://www.flux.ai/ramirov/numerous-scarlet-tv-glasses).* --- *Generated from [https://www.flux.ai/ramirov/numerous-scarlet-tv-glasses](https://www.flux.ai/ramirov/numerous-scarlet-tv-glasses)*