The Potentiometer Block is very simple. It has four potentiometer trimpots which can be used to supply four different voltages to different parts of a project. This can be very helpful as a test device for inputs that will ultimately be supplied by sensors or other input devices.

How Do I Use This?
Because the Potentiometer Block is meant to provide voltages that simulate the signals that will ultimately be sent by sensors, the pots are connected only to the 5V power line, not the +V. This means that you'll need to supply 5V and 0V to either one of the two pairs of 0V/5V connectors. Once you've connected the power, run a piece of wire from any of the output connectors on the Potentiometer Block to an input connector on another board (a Poly Block, a Servo Block, an Intro Module, etc.).

Applications
- Convenient Test Device. Imagine a situation in which you have 4 distance measuring sensors you'd like to use in your project, for example. A couple issues might make this inconvenient during the development of your project:
1. Powering and connecting all 4 sensors successfully. With each of the pots on the Potentiometer Block connected to the same power lines, it's not necessary to deal with splitting power lines to several destinations before you're ready to connect the sensors.
2. Triggering the sensors. Instead of walking around the room to trigger each of the distance measuring sensors to test your project's interactivity, you can more accurately control the signals to the rest of your project with the four pots on the Potentiometer Block, all right in your hand.