Arduino interrupts in C: implementing a time switch | Freedom Embedded
Arduino - Turn LED ON and OFF With Button - The Robotics Back-End
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Dimming Lights with PWM using Push Button - Arduino Project Hub
Remote Control Light Bulb using a Relay - Arduino Project Hub
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2X12mm Big Key Module Big Button Module Light Touch Switch Module with Hat High Level Output for Arduino or Raspberry Pi 3 - China Sensor Module, Big Key Module | Made-in-China.com
SIK Experiment Guide for Arduino - V3.2 - learn.sparkfun.com
Turn Any Appliance into a Smart Device with an Arduino Controlled Power Outlet
How to Make One Button Have the Functionality of Two or More with Arduino - Programming Electronics Academy
Switching Things On And Off With An Arduino | Martyn Currey