OSOYOO Universal IO Breakout Board GPIO Expansion & Debugging Platform for Arduino Nano, ESP32, ESP8266 NodeMCU, Raspberry Pi Pico 48-Pin Socket Supports 0.61.2 inch MCU Width

Universal MCU Compatibility: Supports virtually all development boards with 2.54 mm pin pitch and 0.61. 2 inch row spacing, including Arduino Nano, ESP32, ESP8266 NodeMCU, Raspberry Pi Pico, and more. Two 224P female sockets accept up to 48 pins. ^^ Real-Time Per-Pin
LED Indicators: Each GPIO has a dedicated LED that lights up when the pin is HIGH and turns off when LOW. Ideal for visual debugging without a logic analyzer. Floating pins may dimly light the LED to help identify unconfigured IOs. ^^ Dual Independent Power Rails (VA
& VB): Two JW5357 step-down DC-DC converters deliver up to 3A per rail, independently selectable for 3.3V or 5V. Perfect for powering sensors, servos, and actuators separately from the MCU. ^^ Non-Intrusive LED
Drive Circuit: LEDs are driven by a 74LVC14AD Schmitt-trigger inverter, not directly from GPIO. This means zero load on MCU pins, no interference with ADC accuracy, I2C/SPI buses, or ESP32 strapping pins during boot. ^^ Dual Connection
Options + Protection: Each signal row provides both 2.54 mm pin headers and screw terminals (S/V/G) for easy, tool-free wiring. Built-in SI2302 reverse polarity protection, on/off switch, and 718V DC input (barrel jack or terminal) ensure safe and flexible operation.