The NodeMCU ESP32 Screw Terminal Adapter Expansion Board is designed to simplify prototyping and field deployment for 38-pin ESP32 development boards. By breaking out every pin to sturdy screw terminals, this expansion board eliminates loose jumper wires and soldering, providing a clean and reliable connection method for custom electronics, home automation controllers, and industrial projects.

Specifications

• Board Compatibility: Fits standard 38-pin ESP32 development boards
• Terminal Type: Screw clamp terminals
• Pin Count: 38 breakout terminal points
• Header Socket: Dual-row female header block for direct ESP32 insertion
• Pin Labelling: Silk-screened pin numbers and functions next to each terminal block
• Mounting: Pre-drilled mechanical mounting holes for enclosure mounting

Interface and Connection Guide

• Centre Socket: Dual female headers where the 38-pin ESP32 board plugs in directly.
• Side Screw Terminals: External screw terminals corresponding to each GPIO, power line (5V, 3.3V), and ground pin on the development board.

Key Features

• Solderless & Secure Connections: Features heavy-duty screw terminals for all 38 pins, ensuring secure wire retention that resists vibration and mechanical strain.
• Clear Pin Identification: Each screw terminal is clearly labeled with its corresponding pin name, enabling quick identification during wiring and troubleshooting.
• Simplified Prototyping: Replaces delicate breadboard jumper wires with direct cable clamps, making it ideal for both beginners and experienced developers.
• Easy Module Swapping: Allows quick removal or replacement of the ESP32 board without disconnecting external field wiring.

Common Applications

• Industrial Automation: Interfacing ESP32 controllers with industrial sensors, switches, and relays inside control cabinets.
• Smart Home Gateways: Wiring custom IoT hubs, wall-mounted control panels, and automation node enclosures neatly.
• Robotics Projects: Securing motor driver signals and power lines in high-vibration mobile rover chassis.
• Educational Labs: Rapidly building and testing student projects without damaging microcontroller pins through repeated soldering.

Usage Tips

• Verify Board Pinout: Ensure your ESP32 module is a 38-pin variant (not the smaller 30-pin version) and align the pin orientation correctly before plugging it into the board.
• Wire Prepping: Strip approximately 5mm of insulation from your connect wires and twist stranded wires tightly before inserting them into the screw terminals.
• Proper Screwdriver Sizing: Use a precision flathead or small Phillips screwdriver to tighten terminal clamps gently without stripping the tiny screw threads.