USB-C Temperature and Humidity Sensor Node

flux

0:00

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.

162 days

Resistance

500 Ω

Reviews

Ground
A common return path for electric current. Commonly known as ground.
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Net Portal
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Power Net Portal
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Project Name

Description

ESP32-WROOM-32 Sensor & Relay Control PCB with Power Management

Properties

System Architecture

Diagram

Pricing & Availability

Distributor	Qty 1
LCSC	$1.74

Controls

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