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 ...

The idea is to combine the capacities of an Arduino Micro with those of a NodeMCU 8266 for building a programmable button box. Here is what we take from the two worlds: large number of input ports ...

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, and made by hand.

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].

This idea is very creative and simple. You just need to have an Arduino Uno, Accelerometer (MMA7361 Three Axis Accelerometer), 12v Electric Door lock, Relay and 12v power supply. Now the magic happens ...