Here, inspite of the I2C interface, just an analog input of the Arduino is used. Needless to say, a simple add-on hardware is necessary for this little experiment. The hardware is nothing but an ...

Here is the diagram of my Arduino infrared close proximity sensor. As you can see, the core part of my experimental setup is an Arduino UNO, but other compatible microcontrollers can also be employed.

In the video after the break [Adam] checks a room for possible sources of interference, treating the recharging circuit ... the Arduino, this turns out to be a quick and easy way to make sure ...