![Image for Lever to Axle Y on Multi-axle, power and rotation transmitting box [MAP-RT Box]](https://d2nmr6p48f8xwg.cloudfront.net/content_pictures/pictures/000/001/911/31546915fb1f8dc2c771698bb63897f956865b9cLego-Mindstorms-Lever-To-Motor-Y-At-Multi-Axle-Power-And-Rotation-Providing-Box-Fllcasts.png)
This was an idea. You would we demonstration a multi-axle power and rotation transmitting box. Well, here it is. Build it. Start it. And see how the power from the motor is transmitted through different axles. The lever will demonstrate it.
There is a lot of physics and math involved when learning with LEGO Mindstorms EV3 robots. It is generally "difficult" to include them directly during classes because students are coming for "something funnier" and at the same time, they could be of different ages. But Inertia is a pretty common topic that is quite easy to introduce to students, especially with a robot.
The robot moves and stops. What will happen with the cargo when the robot stops? Naturally, the cargo will continue moving and this is dangerous. For how long, what would be the energy? All these are things that could be discussed with this robot.
The robot is not completely finished because you have to finish it and decide on the wheels to be used.
The LEGO Mindstorms EV3 set comes with two LARGE motors. But even though these motors look almost the same they are not quite the same. There are always some differences in their behaviour. If you have more than two motors, because you bought them or you won them somewhere at a competition, it is worth doing an experiment to find which pair of motors works best.
We should multiply the error by a certain number and then add it to the steering of the LEGO Mindstorms Steering block. In this way, by changing the coefficient we change how much/fast should the proportional part influence the steering of the robot.
Building instructions for a LEGO robot that shoots 40 mm ping pong balls. The shooting mechanism is powered by two EV3 Large motors, while the whole mechanism is rotated by a medium motor. The robot can store up to 6 ping pong balls and has a Ultrasonic Sensor to detect targets.
The experiment contains a plot of the Curren Power of Motors B and C and the values of the Gyro Sensor when the robot is moving with a power of 100%. What you could see is that it is not actually moving with a power of 100% because the current power is about 75-80%.
As the name indicates, ultrasonic sensors measure distance by using ultrasonic waves. One of the “eyes” on the sensor head is the transmitter and emits an ultrasonic wave and the other “eye” is the receiver which receives the wave reflected back from the target.
We got the speed of rotations of the motor in Radians per second. Let's calculate the value for the speed of the whole system. We calculate that the wheels are rotating with 375 radians per second. Which is impressive and quite fast for this system. From this speed, knowing the inertia mass we can calculate how much energy is the system accumulating.
Value was inspired by the spy vehicle robot. This little robot was built to measure the volume of the room he's in.
There are two types of inertia to familiarize you with. You know of one intuitively, the other one is more obscure. Both must be considered when building your own robots, especially in the future for competitions.
In this course, you don't need robots and programming. In this course, students will experiment with physical and chemical concepts, like balance, forces, gravity, inertia, temperature, ratios, and others.
You know those constructions that you need to push or pull something and you get a cool chain reaction, right? Here are the building instructions of such a Chain Reaction built with LEGO Mindstorms 51515 Robot Inventor set. This construction was created to be used with the smallest Inventor robot Tricky and its Kick the ball attachment. The goal is to program the robot to kick the Mindstorms/Duplo ball, included in the set, so that the ball could push the lever and start the chain reaction.
You can find the LEGO set, with which this was built, by following this link.
You can find constructions created to play with Tricky, by following the links below:
This robot is designed to easily lift a cup while still holding it upright. With its motor attached to the side of the hub, the robot can lift the cup to any angle you want. You could replace the LEGO cup and make it lift real cups with a few adjustments. Be careful around liquids though, the robot doesn't like beverages like you do!
As you might have seen, recently all the cool kids build tensegrity structures. So we decided to make one for those of you who have a Spike prime set and want to build one themselves! In addition this tensegrity structure requires only parts from the set, which means you don't need to tie any strings on beams or other parts!
At the top of the structure we have two fully functional motors! Can you make something cool with them?
