For our main robot, we have chosen to develop a holonomic (i.e omnidirectional) wheel base. It is able to rotate and translate at the same time at high speeds. On the contrary, the translation of a non-holonomic drive is only performed in the orientation of the robot, and the rotation can only be done when the robot is at a stop.
A design with 3 steerable drive wheels enables quicker accelerations and reduced braking distances. This makes our robot gain some precious seconds during the contest and avoid collisions with the opponent robot.
The smaller robot is limited in size by the rules and will thus be based on a conventional non-holonomic design. To ease the development, some components will be common on both robots: brushless motors, digital servomotors with position feedback, Raspberry Pi 3, LIDARs, etc…
These technologies, in particular the LIDARs, are expensive because we have ambitious goals in terms of performance. We indeed aim to reach the final phases of the French Eurobot Contest, i.e being among the 16 best teams of France before 2 or 3 years.