Our team is called "MarilenaJulia-RobotCreators"

We have collected the following ideas to design and create robots:

+ a cleaning-robot that can drive and collect objects

+ a robot which can play domino by Marialena

+ a robot which plays mp3-songs songs and can move to the music (´dancing´) 

because I cannot reach Marialena by any means I continue on my own:

+ a plotter who can draw something on a sheet of paper in x- and y-direction by Julia

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Hello Marialena,

We must organize a Video Phone Call, said our teacher. When have you time?

Bye, Julia

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an EV3 Plotter by Julia

Description of the Plotter

It can plot for example a graph of an equation (like y=ax+b etc)

on a sheet of the size DinA4,  the plotter consists of

a pen which is mounted in a pen holder

which is attached to the axle of a z-linear motor

such that the pen can be lowered to and lifted from the sheet,

the z-linear motor is mounted on an y-slide,

the y-slide consists of of a frame with four gear wheels at each corner,

two of the gear wheels are driven in the y-director by an y-servomotor (using a worm wheel)

such that the y-slide can move in the y-direction back and forth

the four gears intermesh with two toothed racks on a frame of an x-slide,

the x-slide has also four gear wheels at each corner

intermeshing with two toothed racks disposed along the side of the sheet

two of the gear wheels are driven in the x-direction by an x-servomotor  (using a worm wheel)

such that the x-slide can move in the x-direction to the left and the right

a Lego-Mindstorms-EV3 is the controller of the x-servomotor, the y-servomotor and the z-linearmotor.

​​​​​Drawing of my robot:

and also in format PDF:

Drawing Plotter - Julia Meyer 10d.pdf

Class Diagram in UML:

Class Diagram in UML Julia Meyer 10d.pdf

Classes and Methods in Eclipse:

Classes and Methods in Eclipse Julia Meyer 10d.pdf

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an EV3 Domino Robot by Marialena

An EV3 independent platform was built able to provide domino stacking capabilities.

This is my designed Domino platform:

This was built separately so that it could easily by mounted on top of the famous LEGO Robot Educator base.

Lego already provides building instructions for this Lego Educator, that is really the simplest vehicle a beginner can build.

(also here)

ev3-Educator-driving-base.pdf

and my Domino Platform can be immediately placed on top of it, as seen in the following photo.

This is a video from the 1st testing of it.

Its performance can be improved by better programming of the motors.