Universal IO Breakout Board – GPIO Expansion Board with 48 LED Indicators for Arduino Nano, ESP32, ESP8266, Raspberry Pi Pico

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• 🔌 Universal MCU Compatibility: Works with a wide range of development boards including Arduino Nano, ESP32, ESP8266 NodeMCU, and Raspberry Pi Pico thanks to its 0.6-1.2 inch adjustable pin socket. A single breakout board for all your projects .

• 💡 48 Real-Time GPIO Status LEDs: Monitor every pin's HIGH/LOW state at a glance. Independent LEDs are driven by a 74LVC14AD inverter, ensuring zero load on GPIOs and no interference with ADC, I2C, or SPI performance .

• ⚡ Dual Independent 3A Power Rails: Features two separate, jumper-selectable power rails (VA and VB). Each can be independently set to 3.3V or 5V and provides up to 3A of current, perfect for powering motors and servos .

• 🛡️ Robust Protection & Power Management: Equipped with an SI2302 reverse polarity protection MOSFET, an on/off power switch, and a wide 7-18V DC input range for safe and convenient operation .

• 🔧 Versatile Connectivity for Prototyping: Each GPIO port features both a 2.54mm header pin and a S/V/G screw terminal. Connect sensors and modules quickly with jumpers or make strong, reliable connections with bare wire for permanent projects without soldering

Elevate Your Prototyping Game with the Ultimate Universal GPIO Breakout Board

Welcome to the most versatile tool for your electronics workbench. The OSOYOO Universal IO Breakout Board is designed to eliminate the hassle of finding the right shield for every different microcontroller. It's the one board you need for almost all your projects.

One Board to Rule Them All: Universal MCU Compatibility

This breakout board features two sets of 2×24P female pin-header sockets that support MCU modules with a pin row spacing of 0.6 to 1.2 inches. This broad compatibility covers a vast range of popular development boards, including but not limited to:

• Arduino Nano (and variants)

• ESP32 (30-pin and 38-pin variants)

• ESP8266 NodeMCU

• Raspberry Pi Pico (and Pico W/2)

• And many more!

All pin headers are on the standard 2.54mm (0.1-inch) pitch.

See Your Signals in Real-Time: Per-Pin LED Status Indicators

Debugging has never been easier. Every single GPIO pin on both sides of the socket has its own dedicated LED:

• LED ON: The GPIO pin is driven HIGH.

• LED OFF: The GPIO pin is driven LOW.

• Dim/Flickering LED: Indicates a floating (unconfigured) GPIO pin .

This visual feedback lets you instantly verify your code's logic and the state of each pin without needing an oscilloscope or logic analyzer. The LEDs are driven by an isolated 74LVC14AD Schmitt-trigger inverter circuit, meaning they do not load the GPIO pins and will not affect critical functions like ADC readings or I2C/SPI communication .

Power to Create: Dual Independent 3A Power Rails

Your projects need reliable power, and this board delivers. It features two independent power rails, VA and VB, each powered by a robust JW5357MSOTB#TR DC-DC step-down converter.

• High Output: Each rail can deliver up to 3A of current.

• Independent Voltage Selection: Use the VCCA_Selector and VCCB_Selector jumpers to individually set each rail to either 3.3V or 5V. This allows you to power a 5V servo on one rail and a 3.3V sensor on the other, all from a single board .

Built for Flexibility and Safety

• Wide Input Range: Accepts 7-18V DC via the 5.5x2.1mm barrel jack or the convenient screw terminal.

• Reverse Polarity Protection: An onboard SI2302 MOSFET prevents damage if you accidentally connect the power supply backwards .

• On-Board Power Switch: Easily turn the peripheral power on and off without unplugging the entire system.

• Dual Connection Options: Each GPIO is connected to both a 2.54mm pin header and a secure screw terminal (S/V/G). This allows for quick connections with jumper wires or robust, permanent connections with bare wire, perfect for projects that will be deployed in the real world