An FPGA-based USB 1.1 (full-speed) device core to implement USB-serial, USB-camera, USB-audio, USB-hid, etc. It requires only 3 FPGA common IOs rather than additional chips. 基于FPGA的USB 1.1 (full-speed) device端控制器，可实现USB串口、USB摄像头、USB音频、U盘、USB键盘等设备，只需要3个FPGA普通IO，而不需要额外的接口芯片。

A hand-wired USB & Bluetooth keyboard powered by Python and more

USB keyboard/mouse to PS/2 interface converter using a Raspberry Pi Pico

USB keyboard to PS/2 / AT / XT interface converter using a Raspberry Pi Pico

用 Android 设备实现的即插即用 HID 键盘 & 鼠标。

Arduino library to add HID USB keyboard functionality to your projects

Touch Screen USB Keyboard with ESP32 S2 and ESP32 S3 and Arduino

Arduino USB pass through demos

ESP32 USB Host HID Keyboard for Arduino

Convert USB keyboard to Bluetooth LE

DIY MIDI button controller from QWERTY USB keyboard

USB keyboard button box with rotary encoders using Raspberry Pi Pico

Interfaz directa con teclados USB en Verilog con control de los Leds de teclado y conversión a PS/2.

A simple 4 Keys USB keyboard for the nRF52840-DK.

Apple Lisa Keyboard Tester/Translator/Emulator

USB keyboard/mouse to PS/2 interface converter using a Raspberry Pi Pico

Midbar is more than just a password vault! Midbar is designed to significantly increase the cost of unauthorized access to its user's personal data.

RFM69 USB extender

use a Raspberry Pi 400 as a normal USB keyboard via USB-C

USB keyboard to USB CDC converter using a Raspberry Pi Pico