GitHub - houkanshan/arduino-bt-hid-proxy: Bluetooth HID proxy is implemented using Arduino. Make a Bluetooth keyboard or mouse (WIP) work in BIOS or device without BT stack (e.g. TMK USB to USB Converter)
HID-class USB Serial Communication for AVRs using V-USB « RAYSHOBBY.NET
KVM EXT CATx/Fiber SH, 4K DP USB HID Serial Audio Local Video | Black Box
Dual-DVI KVM over IP Receiver Unit, FHD, HDCP 1.4, EDID Migration, Audio, USB 2.0, Serial, Bi-directional IR Extension, and Serial/ Web GUI Control, Internal Power, NVXXDU-Q31R
Is two-way raw HID + Joystick + Serial possible? | Teensy Forum
New Bt Hid Remote Codes Serial Monitor Master Slave Bluetooth 5 Module For Bmw/Robot/Led Controller - AliExpress
Serial Terminal Basics - SparkFun Learn
HID-class USB Serial Communication for AVRs using V-USB « RAYSHOBBY.NET
4. Serial Communications - Arduino Cookbook [Book]
Teensy USB HID Attack Vector | Theonemarch
Serial Terminal Basics - SparkFun Learn
Using a USBASP v2.0 as a cheap ATmega8 Arduino platform
Unable to open port COM14 for reboot request | Teensy Forum
Docklight - Test & Simulate Serial Protocols (RS232, TCP, UDP, HID...)