Compact mini expansion board for GPIO This mini expansion board brings out all 40 pins of the GPIO header through screw terminals, making wiring quick and reliable. Its compact form factor preserves space on your project, making it ideal for DIY circuits and tight setups. Key benefits 40 GPIO pins exposed via screw terminals for easy cable access and tidy wiring Spacesaving design that does not occupy extra area on your project board Friction protection between the expansion board and contact surfaces helps extend board life Legible small print labels clearly indicate the function of each GPIO pin for quick identification What to know Type: mini GPIO expansion board Pin transfer: all 40 pins routed to screw terminals Compatibility: designed for devices with a 40pin GPIO header Form factor: compact mini board Labeling: each GPIO pin function is labeled with legible markings Use scenarios Prototyping and testing GPIO based modules Connect sensors, actuators, or modules to the 40 GPIO pins via screws for fast iterations and clean wiring. DIY electronics and hobby projects Use the screw terminals to organize cables neatly, freeing up space and reducing routing complexity on your breadboard or PCB. Education and demonstrations Clearly labeled pins help students or workshop participants learn GPIO wiring, troubleshoot connections, and verify pin functions quickly. In short, this compact expansion board simplifies access to all 40 GPIO pins, reduces wiring clutter, protects the board from wear due to friction, and provides clear labeling to speed setup and troubleshooting.