- Function: expands 1 GPIO pin to 2 outputs, making it easier to reuse pins for small-scale projects and freeing up space on crowded layouts. - Compatibility: designed specifically for the 38PIN narrow version ESP32 Development Board without mounting holes. not compatible with other versions. - Design and fit: compact splitter/adapter that wires a single GPIO to two breakout outputs. no mounting holes required for the target board. - Practical benefits: simplifies prototyping by providing a two-point access from one pin, reduces wiring complexity, and helps maximize usable GPIO on compact ESP32 boards. - Important note: both outputs mirror the same GPIO signal, so they are not independently controllable; use this when you need the same signal routed to two destinations. - Use scenarios: 1) Quick prototyping with dual indicators: route the same GPIO to two LEDs or indicator modules to visibly monitor a single control line from a compact ESP32 board. 2) Debug and test setups: split a GPIO to two test instruments (for example, a logic analyzer and an oscilloscope) to observe signal behavior without reworking wiring. 3) Space-constrained projects: route a single control line to two submodules or headers on a small enclosure where routing separate GPIOs is impractical. - Materials and performance: designed for reliable signal duplication within the constraints of the 38PIN narrow ESP32 Development Board form factor; keeps the footprint small and wiring straightforward.