pxt-ev3/docs/tutorials/pause-on-start.md

Pause On Start

Introduction @unplugged

Sometimes you don't want your program to run right away... you can use a button to wait before moving the motors.

Step 1

Let's start by showing an image on the screen so the user knows that the robot is ready and waiting.

brick.showImage(images.informationStop1)

Step 2

Drag the ||brick:pause until enter pressed|| button to wait for the user to press the Enter button.

brick.showImage(images.informationStop1)
brick.buttonEnter.pauseUntil(ButtonEvent.Pressed)

Step 3

Add all the motor and sensor code you want after those blocks!

brick.showImage(images.informationStop1)
brick.buttonEnter.pauseUntil(ButtonEvent.Pressed)
brick.showImage(images.expressionsBigSmile)
motors.largeBC.tank(50, 50, 1, MoveUnit.Seconds)