For World Robotics Olympiad Ball Collection competitions we prepared an interesting Robot Base Chassis that could be extended with a container. The container contains the ping-pong ball. A mechanism collects them. This LEGO Mindstorms EV3 building instructions are for the chassis of the robot and were one of the versions from a series of robots. 

This robot extends the Tetrix Box Robot chassis for FTC competitions with an additional arm. The arm could be used for lifting and placing objects and could be quite useful. 

There is a special rubber band at the end of the arm, because there are not enough parts in the Tetrix set and we had to use a rubber band. But the principle of the arm is interesting, useful and you should be familiar with it - the arm keeps the motors always in the right orientation.   

This is the chassis for the popular FTC Push Bot. The robot is built with the Tetrix set and uses two motors. When preparing for a FIRST Technical Challenge competition (FTC) it is very useful to have a chassis from which you could start working. It might not, and will surely not be the final robot, but a good base is always useful. 

With this chassis, we've also made a short course of how to control it. Take a look at FIRST Technical Challenge. Basic GamePads, control and attachments for the Tetrix set.

This one is also fast. It has assistant wheels, but only to keep the balance. It is built with LEGO Mindstorms EV3 sets with the use of one additional Medium Motor. 

Join the course A robot a "day" keeps the questions awake where we will further discuss the motors, how to build them and what tasks to accomplish with them.

The demo programs for this motorcycle are here.

This is a simple chassis that uses two motors to control the robot and two omni wheels at the back for greater maneuverability.

The program for this chassis is at programs/c0oq4l-pesho-bot-chassis-controls-with-modkit

Program for this robot is at programs/uxgw6b-roberto-bot-chassis-controls-with-modkit

This is a simple chassis that uses two motors to control the robot and two omni wheels at the back for greater maneuverability. It also have low center of the mass which makes it more stable for higher attachments.

The program for this robot is at programs/uxgw6b-roberto-bot-chassis-controls-with-modkit

This is a vehicle that is used to help you to learn programming, to experiment with addons, attachments and constructions. It has a frame. Which is nice. A frame is always nice. 

It has two wheels at the back, but this is needed only if you have them.

Building instructions for a Light LEGO Mindstorms EV3 Competition Robot that could be used in LEGO Robotics competitions. Compared with previous versions of this robot, this one has a Gyro Sensor. 

This incredibly compact SPIKE Prime Box Robot is made for competitions like FIRST LEGO League (FLL) and World Robotics Olympiad (WRO). Whakatae (from Maori's word "whakataetae", which means "competitive") is long 17 LEGO units and is with a width of 15 LEGO units. In front of the wheels it has two color sensors which it uses to align. Whakatae also has two Large motors for moving and has two medium motors for attachments!

It's has "V2" in its name, because it's the second version of Whakatae - LEGO Education SPIKE Prime Competition Box robot. The difference between the two is that the first one can be built with only a Large Motor and a Color sensor in addition to the Base set, while this one needs an additional ball bearing. This provides this robot with a lot more stability and can be seen as a true upgrade to the first version.

Light Cooley is an extension of Cooley. We've added two Light/Color sensors to allow for lines to be followed and for the robot to alight to them and we've kept everything Cooley was cool and known about. Build a few attachments for it and take it on a ride for a FIRST LEGO League competition