golfsaber / Regional Salmon KITT

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Temperature and Humidity Sensor Node Design

Applied changes.

0:02

138 days

Worked

0:07

138 days

flux

0:00

Work completed
  • Updated project description to reflect VBUS integration and added system architecture flowchart.
  • Added major ICs:
    • U1 (MCP73831T-5ACI/OT Li-ion charger)
    • U2 (BQ24075TRGTR power-path controller)
    • U3 (MAX3949ETE+T dual laser driver)
  • Assigned net and wired power:
    • Renamed [J1 Pin_1 - U1 VIN](J1 Pin_1 - U1 VIN) to VBUS
    • Connected [J1 Pin_1 - U1 VIN](J1 Pin_1 - U1 VIN) → U1:VIN
    • Connected U1:VBAT → U2:BAT_1/BAT_2
    • Connected U2:OUT_1 → U3:VCC (both channels)
  • Added decoupling capacitors:
    • C3 on VBUS
    • C4 on SYS
Success criteria
  • ✅ J1:Pin_1 correctly assigned to VBUS and routed to charger input.
  • ✅ Charger, power-path, and laser drivers added with proper interconnections and filtering.
  • ℹ️ ERC/DRC checks and manufacturability review are pending.
Next step: Run ERC/DRC to verify all connections and resolve any net errors before proceeding to parts availability and PCB layout review.
138 days
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    Regional Salmon KITT

    Regional Salmon KITT thumbnail
    USB-C VBUS Integration with Onboard Li-ion Charger and Power-Path for Dual Laser Drivers

    Properties

    14.0 mm x 10.0 mm

    flowchart TD MicroHeader --> PullDownResistors PullDownResistors --> ESDTVSDiodes ESDTVSDiodes --> RCNetwork RCNetwork --> LiIonCharger LiIonCharger --> PowerPathController PowerPathController --> LaserDrivers

    USB

    Power Management

    gnu.org/licenses/gpl-3.0.html

    Consumer Electronics

    USB

    Pricing & Availability

    Distributor

    Qty 1

    Arrow

    $1.67–$2.68

    Digi-Key

    $3.31

    LCSC

    $7.06

    Mouser

    $8.67

    TME

    $0.00

    Verical

    $2.22–$2.61

    Controls

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