Arduino Capacitive Scroll Bar from Alejandro Corbi on Vimeo.

What is capbar?

Is a user input interface concept. Cap stands for “Capacitance” , wich allows us to use nothing but our finger to generate input signals to communicate , in this case with Arduino.

By using very little and cheap amount of materials, just cable and something conductive, a haptic interface can be created and used to provide a posible prototype with an alternative input interface than potentiometers, buttons or switchers.

The good part of it

Easy: So as setting n separated conductive pieces connected each of them to one input pin on arduino.
Cheap: I used conductive tape (something like this) that i found somewhere , you can use whatever conductive material . In addition, the design is quite flexible, a bar is just the easiest  way to implement it.
Responsive: As you can see on the video, the input pins register quite accuratelly the contact between finger and surface. More than one segments can be pressed and detected at the same time.

The bad part of it

Future Roadmap