Switches and push buttons need debouncing. It is straightforward to do this with software, using a library. The advantages of the Switch library are: External pull-up resistors are not required.

Twidec 10Pcs Momentary Push Button Switch SPST AC250V 3A AC125V 6A Mini Off(ON) ON Colour with Pre-soldered Wires R13-507-5C-X Cylewet 70Pcs 6×6×8mm Momentary Tactile Tact Push Button Switch ...

Switch is an Arduino library to handle switches and buttons while performing debounce. The class keeps track of the last event different from the current state and when it is stable for a given time, ...

My daughter likes buttons. She's learning letters. I was bored over winter break and had these parts laying around... so I built her a "Button Box" based around an Arduino. Open source, hackable ...

The ‘unhackable’ switch, which resembles a MIDI sequencer input, runs on an Arduino Nano Every and uses a relay to directly control the power state. Instead of having one keep-alive button ...

Think of it as a Netflix and Chill button, but with maybe less Chill. The Netflix Switch is powered by a Particle Core, an Arduino-compatible development kit that features on-board WiFi.