Making Simple Robots, 2nd Edition

TROUBLESHOOTING TIPS

• If the robot arm gets

stuck in a weird position,

add a new “when [green

flag] clicked” stack with a

“switch costume” block.

Set it to the first costume,

so you can always stop the

program and reset the arm.

• If you don’t like where the sprites are moving, you can go back and

drag objects around in the backdrop, including the robot body.

GO BEYOND

• Go to the Sound block menu (violet) and insert some sound

effects from Scratch’s sound library. For example, you can

add a block that says “play [Low Swoosh] until done” to the

Cube sprite’s “broadcast message” stack of code.

• Choose a piece of music from the sound library ...