USB-C Environmental Sensor Design

Updated properties for 1 object

0:02

Set U4's Max Output Current to "2"

113 days

Worked

0:25

Stopping: undefined

113 days

flux

0:00

Work completed
  • Updated project description to capture system goals
  • Added System Architecture property with the mermaid diagram
  • Placed major ICs: U1, U2, U3, U4, U5, U6, U7
  • Placed active components: D1, J2, LED1, SW1
  • Fetched and set U4 “Max Output Current” to 2 A
Pending tasks
  • Evaluate U4 output current vs. 600 mA peak and add “LDO Regulator Required” property
  • Add supporting passives (decoupling capacitors, I²C pull-ups, inductors, external oscillator)
  • Define and route nets in the schematic (power rails, I²C bus, decoupling, ESD)
  • Review schematic completeness, component ratings, and compatibility
  • Prepare PCB layout (design rules for RF and high-current paths, component placement, ground plane stitching, ESD placement)
Success criteria status
  • Complete schematic: ❌ pending net connections and passives
  • PCB layout prepared: ❌ not started
  • Power transient support verified: ❌ pending
Next recommended step Evaluate U4’s headroom, set the “LDO Regulator Required” property, then proceed to add the supporting passive components to complete the power subsystem.
113 days
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    Increasing Magenta Lightcycle 6f36

    Increasing Magenta Lightcycle 6f36 thumbnail
    Low-Power USB-C (5 V) Environmental Sensor Node with 18650 Li-Ion Power-Path, Robust Protection (Reverse Polarity, OVP, UVLO, OCP to 3 A), Dual-Radio ESP32-S3 MCU, I²C VOC/Temp/Humidity/Pressure/Lux Sensors, and 2-/4-Pin JST-XH Expansion Pads for Battery and Sensors #USB-C #LiIon #ESP32 #I2C #PowerProtection #EnvironmentalSensor

    Properties

    creativecommons.org/licenses/by/4.0/

    5

    V

    Bare metal

    1566.2

    USB

    flowchart TD UC["USB-C Interface\nand CC Detection"] PP["Input Protection\nReverse Polarity, OVP, UVLO, OCP"] ESD["ESD Protection"] CHG["Battery Charger & Protection"] MUX["Power-Path Mux"] MON["Battery Voltage Monitor"] REG["Regulation\nBuck & LDO"] MCU["Dual-Radio MCU\nWiFi & BLE"] SENS["I2C Sensors\nVOC/Temp/Humidity/Pressure/Lux"] EXPB["2-Pin JST-XH\nBattery Pad"] EXPS["4-Pin JST-XH\nSensor Pad"] SWD["SWD Programming Header"] UC --> PP PP --> CHG PP --> ESD CHG --> MUX CHG --> MON MUX --> REG REG --> MCU REG --> SENS MCU --> SENS MCU --> SWD EXPB --> CHG EXPB --> MON EXPS --> SENS

    Low-Power USB‑C Environmental Sensor Node with Dual-Radio Wi‑Fi/BLE MCU and I²C Temperature/Humidity Sensing

    WiFi, Bluetooth, USB

    2641

    Consumer Electronics

    Standard 4 Layer

    25

    Pricing & Availability

    Distributor

    Qty 1

    Arrow

    $9.53–$12.00

    Digi-Key

    $21.08–$23.24

    LCSC

    $27.86–$27.91

    Mouser

    $16.68

    TME

    $5.40

    Verical

    $9.16–$16.48

    Controls

    New control