# Creating a Gauge

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## Introduction: Creating a Gauge

The following information is a single lesson in a larger project. Find more great projects here.

Lesson Overview:

Now we'll make our mood gauge!

## Step 1: Creating a Gauge

Now that you’re up and running with motion, it’s time to let people know if you’re available to help them on their projects, or if you want to be left alone to plan your next creation!

1. With scissors, cut out a piece of cardboard or construction paper in the shape of an arrow. Tape the arrow so it’s oriented in the same direction as the motor’s plastic arm. Now you should be able to rotate the arrow 180 degrees when turning the potentiometer.
2. Take a piece of paper that is larger than the servo with the arrow attached and draw a half circle on it. On one end of the circle, write “Stay Out”. On the other end, write “Come in.” you could put “Knock please!” in the middle of the arc. Write as many different messages as you'd like!
3. Congratulations, you’ve got a way to tell people just how busy you are with your projects!
4. Continue to the next step.

## Step 2: Think About It...

The potentiometer is not the only sensor you can use for controlling the servo. Using the same physical setup (an arrow pointing to a number of different indicators) and a different sensor, what sort of indicator can you make? How would this work with temperature (like in the Love-o-Meter)? Could you tell the time of day with a photoresistor? How does mapping values come into play with those types of sensors?

Congratulations, you have completed this project!

Check out other great projects here.

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