All rights are David Gilday’s and not our own links to the Mindcub3r websites are at the bottom of the page.
The Mindcub3r is a robot designed and programmed by David Gilday that can be can be built only using pieces found in the LEGO EV3 home set (31313). It can solve a Rubiks Cube in about 5 minutes by scanning and calculating the way to solve the cube, it will then solve the cube by lowering its arm and holding the cube in place while spinning the bottom row. It flips the cube and does the same thing again doing whatever pattern it decided on to solve the cube. (It can also be built with the EV3 Education core and expansion 45544 as well as expansion 45560.)
It requires the latest firmware (v1.06h) or later, but it can be used with older firmware with a different program. We recommend that you update your firm ware when an update is released.
Build the robot carefully and follow instructions for the build and the download as well as possible. The exception to this is a couple of modifications we added to it to be more reliable the first and simplest modification is that we put small yellow spacers before we put the wheels on so the cube slides to the other side letting the sensor see the right tile. (Only on the side with the EV3 brick.) The other modification is on the flipper arm. At the very end of the arm there is an axle with a connecter and two yellow spacers, we found that on the double flips the cube would slide and not flip. to fix this we changed the yellow spacers on the end of the flipper arm to rubbery double axle socket pieces pointed down so it could grip the cube better.