There is several classes: Button () is the class that listen to the serail port. ButtonEvent () call a callback function each time a button is pressed or released. ButtonEventRecorder () and ...

Once the button is pressed, you will notice “ Compiling sketch ” and then, if the code is uploaded successfully you will see a message as “ Done Uploading ” as shown below That is it we have uploaded ...

When the Arduino code sees the button getting pressed, it brings the corresponding LED pin high and starts a fade out timer using the SoftPWM library by [Brett Hagman].

Official Arduino Example Tutorials: The Arduino computer software is loaded with tons of examples for you to use in your own code or to run through as a learning experience.

While you hopefully don't need one-button access to 911, a desk-mounted panic button is undoubtedly cool, and it makes for a great DIY Arduino project ...