Thames & Kosmos Robotics Smart Machines

This kit gives kids a simple, fun, and customizable introduction to robotics that lets them build eight motorized machines.

Using the app interface, you can program the robots you build to behave based on the feedback coming from the ultrasound sensor.

A full-color, 64-page step-by-step illustrated manual helps kids assemble all of the models and teaches them about robotics in the real world.

The ultrasonic sensor works on the same principle as Sonar.

Requires a tablet or smartphone running iOS or Android (not included).