A series of Robot Kits for the future engineer. Build this kit and find out how much fun electronics, mechanics or hydraulics can be! Tobbie is an intelligent six legs robot and provides great interaction with children. Tobbie has two programmed modes to follow or avoid objects. In "Follow Me" mode, Tobbie follows whichever object that approaches him and makes it feel like an obedient pet. Thanks to IR auto detect, Tobbie can avoid obstacles in the "Explore" mode and find a new route to keep mo

This track set includes a pair of 22-tooth silicone tracks, two drive sprockets measuring 1.38" (35 mm) in diameter, and two matching idler sprockets along with mounting hardware. The drive sprockets are designed to work with 3mm D-shafts