EDUCATOR PORTAL

LEVEL MATERIALS

Piper Computer Kit

LEVEL RESOURCES

Concepts

In this level, you will review different levels of outputs and learn about component polarity. It's important to note where the positive (red wire) current must go into the long lead of the buzzer and exit through the short lead, through the blue wire and back to the RaspberryPi.

(Note: You can draw an analogy to a one way valve: the buzzer only lets current flow one way, the way a one way valve only lets fluid flow one way.)

Troubleshooting Tips

• Polarity is most likely the one issue that may come up. Point to the plus sign on the buzzer as it needs to line up with the red wire and the left-most pin of the pin pair.
• The students will have to enable the buzzer to help provide clues to which color will disappear. The number of beeps the buzzer makes will indicate which color will disappear.
• You can draw an analogy to a one way gateway: the piezo buzzer only lets current flow one way.

LEVEL STEPS

Step 1 Find the Crafting Table

In this project, the crafting table is easy to find. Right click on the crafting table to go into PipingMode and get your instructions for building a buzzer.

Step 2 Build a Buzzer

The instructions will show you to get a buzzer out of your electronics storage chest. The buzzer is black, shaped like a cylinder and has a label on top. Install your buzzer in the breadboard as shown in PipingMode. Use GPIO 15,16.

Step 3 Cross the Bridge

The buzzer is sequenced to represent a color of the bridge. Figure out the sequence to understand which color you should use to cross the bridge without falling! Once across the bridge, find the portal and go to the next project.