Compatibility Designed ONLY for 38pin narrow version ESP32 development boards without mounting holes. Not compatible with ESPWROOM32 DevKit V1. Before , confirm your ESP32 board's pin width matches the breakout board. Key benefits Faster wiring and cleaner builds: exposes ESP32 pins to both pin headers and screw terminals so you can connect sensors, modules, or wires without soldering directly to the board. Reliable signal and contact: doublelayer PCB with each pin wired on both sides provides stable connections and consistent signal transmission. Reuse and expand pins: each GPIO can be duplicated (one GPIO → two terminals), allowing you to attach an extra device or test point without losing the original connection. Flexible connection options: choose between standard pin headers for breadboard or PCB compatibility, or screw terminals for robust, removable wiring. Features and attributes Function: Breakout/expansion board that mirrors ESP32 I/O and provides dualtermination for selected pins. Compatibility: 38pin narrow ESP32 development boards without mounting holes only; confirm pin width before use. Construction: Doublelayer printed circuit board for improved reliability and contact (one pin wired on both sides). Connections: Pin headers and screw terminals provided to suit prototyping and permanent wiring needs. Performance: Stable, reliable signal transmission suitable for common ESP32 projects. Typical use scenarios Smart home prototyping: Duplicate a GPIO to drive both an indicator LED and a relay module so you can monitor and switch a circuit simultaneously. Sensor and actuator wiring: Use screw terminals to secure wires from temperature, humidity, or motion sensors during bench testing or a semipermanent installation. Rapid prototyping and breadboard alternative: Mount the breakout to your ESP32 and use the pin headers or screw terminals for quick swapout of modules and cleaner wiring than direct header soldering. Notes and recommendations Verify your ESP32 board pin layout and width match this breakout before ordering to ensure proper fit. The breakout is intended for signallevel connections; confirm any power/current requirements in your specific setup.