Hi, I am new to Arduino and electronics in general. I'm looking for an electronic component that can work as both a potentiometer and an on/off switch. Like those volume controls you find on older stereo equipment where you turn the volume knob all the way to the left and it clicks off. Is there a name for this? Can you recommend where to buy one? I've searched SparkFun, but it's tough when I don't know what it's called.
Thanks in advance for your help.