This blog post is about our current EV3 robot we're planning to use in the 2023/2024 FLL competition. Some features: 2 large motors for steering. 2 medium motors for attachments. 2 colour sensors for picking up the white and black lines, also used for line squaring. 1 gyro sensor. To enable attachments to be changed as quickly as possible we're using gravity to keep the gears connected, i.e. you don't need to fasten anything to the robot. Every attachment has 2x 12 tooth double bevel gear (part 32270) which comes in contact with the 2x 20 tooth double bevel gears (part 32269) on the robot. The medium motors are horizontally aligned on the robots, but we use 12 tooth double bevel gears to convert that to vertical alignments. These in turn are connected to 20 tooth double bevel gears, and the attachments in turn connect to these 20 tooth double bevel gears with their 12 tooth double bevel gears. The complete robot is modelled in Bricklink Studio 2 . You can download the rob...
If you're using Windows 10 18.09 or later and try to install Lego Digital Designer (LDD) 4.3.11 you'll probably get an installation error for Adobe Flash Player. However, there is an easy way around it: Download the installation file for LDD 4.3.11. Rename the .exe file to .zip. If you don't see the .exe extension in Explorer, go to "View - Options" on the Explorer menu, then under the "View" tab deselect the "Hide extensions for known file types". Open the zip file with Windows Explorer. Copy all files in the zip to another directory on your computer. In the new folder: Delete install_flash_player_active_x.exe. Copy OpenGLChecker.exe and rename it to install_flash_player_active_x.exe. Run LDDSetup.exe. In short the installer will execute install_flash_player_active_x.exe during the installation process, but all it does now is to execute the same logic as what OpenGLChecker does. In theory you can run any .exe that will not retu...
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