The Digispark Attiny85 is a compact, inexpensive development board that can emulate a USB keyboard and execute keystrokes on a target system. It supports custom scripts, payloads, and automation logic ...

Learn how to create Rubber Ducky-style USB implants with the Digispark Attiny85. Step-by-step setup, payload development and troubleshooting. - ...

It might not seem too impressive these days, but when microcontrollers with hardware USB support were more expensive and rare, the VUSB library was often used to create USB devices with an ATtiny85.