Teensy 2.0++ AT90USB1286 USB AVR Development Board — Keyboard/Mouse, ISP & U-Disk

Teensy 2.0++ development board powered by the AT90USB1286 USB AVR chip, built for hardware experimentation and quick prototyping. This board can emulate USB HID devices such as keyboards and mice, expose a USB mass storage interface (U Disk), and supports in-system programming via ISP. Suitable for learning, firmware testing, and custom USB device projects, the board provides a flexible platform for a wide range of USB AVR experiments.