They used the webaudio API to send serial data to a remote Arduino. The hack uses a FET, a capacitor, and a few resistors. They didn’t quite build a real modem with the audio.

I love to read through project suggestions and examples for the Arduino and other platforms. It keeps my mind constantly running with ideas for projects. I was recently provided a copy of ...

As explained by Arduino to Go, each color band on the resistor corresponds to a number but this can differ depending on the band's placement.It's not complicated, but the sheer number of colors ...