My girls team has a great robot. I gave them a challenge: build a new robot with 4 motors.
This season I will post a bunch of robot pics.
They started with the EV3 starter robot as the base and customize it.
Notice the wheel design. Two seasons ago after doing a straight test, they realized the marble ball design had issues going straight. For the back, they use rims, no treads. This allows the FLL EV3 robot to pivot.
Here is the Capital Teens World Class First Lego League robot design. It uses a turtle model, allowing different shells. The cool innovation was the motor gear interface. She’ll attachments just snap on. It has three color sensors and a gyro sensor.