LEGO® MINDSTORMS® EV3



LEGO? MINDSTORMS? EV3Mindcub3rMindCub3r is a robot that can be built from a single LEGO MINDSTORMS EV3 home set (31313) or from EV3 Education Core and Expansion sets (45544+45560) to solve the well known Rubik's Cube puzzle. 456692020256500How to OperateTurn on by pressing the centre button on the panelUse the down button to Select InstallMC3-v2p1 and press the centre button to run it. The EV3 will make a short beep. 456692050101500Run the "MC3 Solver v2p1" application on the EV3 from the Brick Apps screen to start the mc3solver-v2p1.rtf executable program. This is only necessary once each time the EV3 is turned on as the program will continue to run in the background until the EV3 is turned off. Run the MindCub3r program on the EV3 from the Run Recent screen or from the File Navigation screen if it is the first time it has been run. When MindCub3r is ready to start, the EV3 buttons turn orange and the message "Insert cube..." is displayed on the screen.The MindCub3r will continue to solve the rubik’s Cube until turned offTurn off by holding the larger button at the top left of the control panel – then select the to shut down SupplierCostWebsiteLego Shop$499.99 *shop.en-AU/Target Australia$499 *.auModern Teaching Aids$659.95.au * LEGO Mindstorm Home Kits, do not have as many parts as the Educational Set. But have many projects available for building and coding.Hints and Tips for OperationAttach to the power when in operation – the colour sensor needs high powerLighting can impact on how well the colours are read by the sensor – ensure the brick is fully powered – once the solver works, it will continue to work well.Ensure all lego parts are tight, you may need to push in joins regularly throughout the day – just with your hands on either side to ensure they are tightIf a cube is slipping, or causes a jamTurn offReset the gears, cube holding section to square, check lego parts are pushed togetherTurn back on and run Installer and MindcuberWebsite for instructions: More informationThe program first resets the position of the scan arm (holding the color sensor) and then the tilt arm. If the turntable starts to rotate or the two arms do not move in this order, please carefully check that cables have been connected to the correct ports on the EV3 as shown by the color coding in the build instructions. During this period, the EV3 buttons flashes red. The program then connects to the mc3solver-v2p1.rtf program that was downloaded to the EV3. If the program is found, the EV3 makes a short beep and continues. If the solver program is not running, the buttons continues to flash red and the message "Find solver" is displayed on the EV3 screen. If this happens, please check that the "mc3solver-v2p1.rtf" program has been downloaded to the MindCub3r-v2p1 or MindCub3r-Ed-v2p1 project folder on the EV3 and that the "MC3 Solver v2p1" application has been installed and run once. When MindCub3r is ready to start, the EV3 buttons turn orange and the message "Insert cube..." is displayed on the screen. Gently turn the turntable in each direction with your finger so that it moves slightly because of "play" in the gears connecting it to the motor. If necessary, adjust the position of the motor so that there is an equal mount of play in each direction. Use the left and right buttons on the EV3 to do this. A short press nudges the motor by a small angle. Holding the button for longer moves it by larger angles more quickly. Insert a scambled Rubik's Cube into the turntable tray and MindCub3r will start to scan and solve the cube. MindCub3r may scan the cube up to three times if it is unable to determine the colors at first. If the scanned colors do not result in a valid pattern, MindCub3r will stop after the third attempt and display the message "Scan error" on the EV3 display. If this happens, there may be a number of possible causes. See the troubleshooting section. MindCub3r can solve the cube directly into patterns or scramble it. Before inserting the cube, use the up and down buttons on the EV3 to select a specific pattern, "All" to create each pattern in turn or "Random" to cause MindCub3r to solve normally and occasionally generate a random pattern. Selecting "Scramble" will make MindCub3r scramble the cube without scanning it. If there is a cube present before MindCub3r is ready, the buttons will stay red and the message "Remove cube..." is displayed for you to remove the cube. If this happens even when no cube is present or if MindCub3r does not start to scan the cube when it is inserted, please check that the cables to the infra red or ultrasonic and color sensors are connected to the correct ports on the EV3 as shown in by the color coding in the build instructions. 4. Troubleshooting Tips4.1 General The video of the home variant of MindCub3r shows a prototype. The scan arm support was improved before the build instructions were published so do not worry if your MindCub3r does not look quite like the video. There are many other videos of MindCub3r built by other people in this playlist 4.2 Tilting If MindCub3r fails to tilt the cube correctly the following tip may help: Check that the tilt arm has been built exactly as shown in the build instructions. In particular, carefully check the position of the grey connectors and pegs that connect the tilt arm to the levers from the tilt motor. 4.3 Scanning If MindCub3r attempts to scan the cube 3 times and displays the message "Scan error" the following tips may help. MindCub3r is designed to work with an official Rubik's Cube branded by Rubik's. However, it should work with most cubes provided one set of stickers is white and the others are distinct colors. It is optimized to work with white, yellow, red, orange, green and blue stickers. NOTE: cubes with very bright, vivid, "fluorescent" stickers may not scan reliably because the LEGO color sensor can return similar values for colors that look different to us. If none of the other tips help and you think this may be an issue, please consider replacing the stickers with more conventional colors or try an alternative cube. Cubes with a white plastic body may scan less reliably that those with a black body but may work reasonably well if there are no other issues. A standard cube is about 57mm along each edge. MindCub3r will work most reliably with a cube this size although cubes that are only slightly larger or smaller may work. It has been known to solve some cubes as small as 55mm but not all. Make sure latest version of the EV3 firmware from LEGO is installed on the EV3. Make sure latest release of the MindCub3r software is installed. Check that the scan arm has been built exactly as shown in the build instructions. Small differences such as how the black 5-hole beams on either side of the scan arm are connected can alter the position of the color sensor during the scan or even jam the scan arm so it stops during the scan. In particular, if the color sensor looks as though it is over the edge of the cube or too close to the middle while scanning the corner or edge, please check the build instructions again. Even if the cube appears to tilt each time during the scan, it may be that the cube is being pushed too far across the turntable affecting its position under the color sensor. Check that the tilt arm has been built exactly as shown in the build instructions. In particular, carefully check the position of the grey connectors and pegs that connect the tilt arm to the levers from the tilt motor. If the EV3 is positioned one hole too far towards the turntable, the corner of the turntable may catch on the edge of the screen causing it to "jump" a little as the turntable rotates. Check that the EV3 is positioned exactly as shown in the build instructions. Make sure that the turntable is carefully aligned before inserting the cube as described here. This is required to ensure that the cube is positioned correcetly under the color sensor during the scan. Use new or well charged batteries as the reset position of the scan arm can be affected by low battery levels. Try the scan in dim lighting conditions as the color sensor can become saturated in bright lights. Try to bend the cable connecting the color sensor to the EV3 in its most natural direction (swap the two ends if necessary) and through the clip at the bottom of the scan arm to minimize any force that the cable applies to the position of the color sensor during the scan. If this does not help, please upload a video showing a failing scan with close up views of the scan arm from different angles and the position of the color sensor over the cube as the scan arm moves and post a link on the MindCuber Facebook page and I will try to help. ................
................

In order to avoid copyright disputes, this page is only a partial summary.

Google Online Preview   Download