Sensor
Tactile Push Button
A simple momentary switch that completes a circuit only while it's being pressed. It's one of the most basic input components used to trigger actions in electronics projects.
Difficulty
Beginner → Advanced
Category
Electronics
How it works
How this sensor works
Inside the button, pressing it pushes two internal contacts together, closing the circuit and allowing current to flow. Releasing the button separates the contacts again, breaking the circuit. The 4 pins are actually just 2 pairs, each pair internally connected.
Applications
Common use cases
Required