Turn your ProMicro into a USB Keyboard/Mouse - SparkFun Electronics
TCKB: My journey in the world of STM32 driven keyboards (60%) - deskthority
Atmel AVR4904: ASF - USB Device HID Keyboard Application
HID-class USB Serial Communication for AVRs using V-USB « RAYSHOBBY.NET
USB HID keyboard with V-USB | Code and Life
Easy AVR USB Keyboard Firmware and Keymapper
V-USB - A Firmware-Only USB Driver for Atmel AVR Microcontrollers
Turn Your Arduino Uno Into an USB-HID-Mididevice : 3 Steps (with Pictures) - Instructables
78 key 6.6 inch USB keyboard - DIY Corner - Level1Techs Forums
Atmega 32u4 Based LED Status (Part 21/25)
Flashed Keyboard Won't Type : r/olkb
Tutorial – Make an Adafruit Trinket USB Keyboard – HID « Adafruit Industries – Makers, hackers, artists, designers and engineers!
GitHub - MrOnak/attiny2313usbkeys: An USB HID keyboard implementation for Atmel microcontrollers for use as custom game panels.
USB HID Mini Keyboard from ATmega 32U4, Joystick and Arduino Sketch - YouTube
4-key keyboard using ATtiny85 - ATMega32 AVR
Bluefruit EZ-Key - 12 Input Bluetooth HID Keyboard Controller | Bluetooth keyboard, Diy electronics, Keyboard
Atmega 32u4 Based Generic USB Keyboard (Part 2/25)
GitHub - raphaelmor/tmk_keyboard: keyboard controller firmware for Atmel AVR USB family
Flashing Firmware | Keebio Documentation
How to Make a Arduino HID Keyboard : 18 Steps - Instructables
ASF - USB Device HID Keyboard Application - Atmel Corporation
Turning An Arduino Into A USB Keyboard | Hackaday
Atmel AVR4904: ASF - USB Device HID Keyboard Application
Generic HID - DIY USB HID / Joystick / CNC Pendant
USB Host - Keyboard to ASCII Converter
