The gray one is servo with 270°degrees for the construction of angular control projects, such as robotic arm, towers. The red one is motor suitable for projects that require continuous rotation, such as car wheels, Ferris wheel steering gear. With the controller board and building blocks, you can control the servo and motor to build various shapes and complete many interesting playing methods.
If you have any problem when using our robot after checking the tutorial, please contact us.
+86 18682378128