App Inventor 2

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Hello Codi!

Hello Codi is the Hello World tutorial for App Inventor. This simple exercise takes you through the very basics of App Inventor. In a very short time you will create a button that has a picture of a bee on it, and then program the button so that when it is clicked a "buzz" sound plays.

LEGO EV3 Color Search

This tutorial shows you how to build a mobile app that instructs an EV3 LEGO robot to search for a certain color on a white surface bordered by black. The user can pick one color out of red, green, blue, or yellow for the robot to search. The robot will search across the white surface and turn around if it gets to the black border. Here is a demonstration video.

Lego EV3 Pet Robot

This tutorial helps you to build an app that allows the user to instruct an EV3 LEGO robot to do certain maneuvers and actions through voice commands. The user can pick one of several commands: forward, backward (reverse), stop, forward slow, forward fast, disconnect, circles, right turn (turn right), left turn (turn left). The robot will follow the user’s voice commands and perform the action for half a second before prompting the user for another command. If the user provides no commands, the previous command will be executed until another command is registered.

QuizMe for App Inventor 2

QuizMe is a trivia game about baseball, but you can use it as a template to build quizzes on any topic. This tutorial is especially useful for learning about working with information in Lists. Lists are useful data structures for keeping track of many items of the same type, especially when you want to cycle through those items.

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