The Big Red Button is technically a keyboard with a single button. What that button is, is up to the implementation. It can be an actual keyboard key, a
Simple Wireless Keyboard for PC
Expandable/Modular (sort-of) keypad - Project Guidance - Arduino Forum
Big Red Swearing Button – Drew Batchelor
MIDI Controlled Solenoids with Arduino and Ableton Live - Part 1
L1: Using buttons - Physical Computing
Arduino Membrane Keypad Tutorial
I made a mousejiggler that keeps windows awake and preserves the online status of teams. The computer recognizes it as a keyboard so it is completely undetectable. : r/arduino
JoyToKey with USB Buttons – RasterWeb!
Basics of Arduino (TINKERCAD)
Arduino ADC keyboard (red one with yellow buttons) · Issue #81 · karawin/Ka-Radio · GitHub
Nagy Piros Gomb™
How to Set Up a Keypad on an Arduino - Circuit Basics
Arduino Inputs/Outputs with Becky Stern