Ready? Aim... shoot!
You can build this ping pong Ball Shooter with a single LEGO BOOST Creative Toolbox set 17101. You can control the turret with the LEGO BOOST App, using the slider to aim and the button to shoot. The spring-based mechanism works as a baseball bat hitting the ball and throwing it up to 1 meter away (about 3 feet). The magazine can hold up to 4 ping pong balls, but you can add extra LEGO parts to make it higher. You can download the building and programming instructions by clicking on the button below.