This expansion shield is designed for 30-pin NodeMCU ESP32 boards, providing easy access to all GPIOs via labelled headers. It includes onboard power input options and screw terminals for rapid prototyping and stable connections in IoT and automation projects.

Specifications

• Compatibility: ESP32 NodeMCU 30-pin boards
• GPIO Access: 30-pin breakout with labelled female headers
• Power Inputs:
  - DC barrel jack (5 V – 9 V)
  - MicroUSB (5 V input only)
  - USB Type-C (5 V input only)
• Voltage Regulator: AMS1117-3.3 (onboard 3.3 V supply)
• Output Pins: 3.3 V, 5 V, GND rails
• Additional Terminals:
  - Screw terminals for VIN, GND, 3.3 V, 5 V
  - Reset and boot buttons
• Mounting: Pre-drilled holes for enclosure or baseplate

Features

• Simplifies wiring for sensors, relays, and modules
• Multiple power input options for flexible deployment
• Clearly labelled GPIOs for rapid prototyping
• Stable screw terminals for power and signal lines
• Common use cases:
  - IoT control panels and sensor hubs
  - Classroom and STEM prototyping setups
  - Robotics and automation baseboards
  - Power-distributed ESP32 installations