Durable, firm, and stable for reliable use. This kit enables you to connect a wide variety of everyday objects as input devices. It is an invention kit that allows your computer to recognize nearly any object as a keyboard or mouse. The kit uses high-resistance switching technology to detect connections—even through non-conductive materials. The ATMega32u4 microcontroller connects to your computer via the Human Interface Device (HID) protocol, enabling it to function as a keyboard or mouse without additional drivers. No programming required. No complex wiring. No software installation needed—simply plug in the USB cable to begin using it. Specifications: Item Type: Main Control Board Kit Communication Interface: USB Color: As shown in product images Material: PC + Metal Package Contents: 1 × Controller Board 10 × Crocodile Clips 1 × USB Cable 10 × Jumper Cables Note: The package includes only the items listed above. Other accessories shown are not included. Due to variations in lighting and screen settings, the actual product color may differ slightly from images. Measurements may vary by ±1–3 cm.