USB-C Temperature and Humidity Sensor Node

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Work Done
  • Updated project description to clearly state goals with relevant hashtags (#ESP32 #DHT22 #Relay #3V3Regulator #PowerProtection).
  • Added System Architecture property with Mermaid diagram illustrating the ESP32-WROOM-32, 3.3 V regulator, DHT22 sensor, relay module, power rails, connectors, and programming header.
  • Placed major ICs:
    • ESP32-WROOM-32 module (U1)
    • 3.3 V LDO regulator (U2)
Remaining Tasks
  • Add the loose DHT22 sensor symbol and label its data pin.
  • Add the 5 V opto-isolated relay module footprint.
  • Insert power connectors (+/– screw terminals and 5 V input connector).
  • Place decoupling and bulk capacitors at regulator input/output.
  • Add pull-up resistor (4.7–10 kΩ) on DHT22 data line and optional input protection (diode, TVS, fuse).
  • Add programming/UART header for the ESP32.
  • Connect nets: 5 V rail to regulator and relay, 3.3 V rail to ESP32 and sensor, common ground, GPIO14→DHT22 (with pull-up), GPIO15→relay input.
Success Criteria Review
  • ESP32-WROOM-32 and 3.3 V regulator added: ✅
  • Other criteria (DHT22 pull-up, relay interconnect, decoupling, connectors, header) not yet implemented: ❌
Next Step Let’s add the loose DHT22 sensor symbol and the 5 V opto-isolated relay module to the schematic.

Flux stopped

U3
D2
U1
R1
Resistance
500 Ω
K1

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    Tarea S5-Rolando gamboa thumbnail
    ESP32-WROOM-32 Sensor & Relay Control PCB with Power Management

    Properties

    Diagram
    


  
    
  
  
    
  



Power


Controller


Sensor
















Input

Output

Supply

GPIO14 (Data)

GPIO15 (Drive)










"3.3 V Regulator"
"Opto-isolated Relay Module (5 V)"
"5 V Connector"
"Power Screw Terminals (+/–)"
"Programming Header"
"5 V Input"
"3.3 V Rail"
"GND"
"ESP32-WROOM-32"
"DHT22 Sensor"

    Pricing & Availability

    Distributor

    Qty 1

    LCSC

    $1.74

    Controls