Tim's Lego Cup
Tim's Lego Cup First Seen at EPIQ 2018

See Below for Step By Step Instructions 


If you want to reuse your older SD card that had been used for an earlier version of the Quorum Robot kit you will need to delete all partitions then reformat your SD card. Why? When you first insert the micro SD card in the EV3 brick it resizes the FAT32 partition to be much smaller and creates a Linux file type  (ext2) that uses most of the space. That is where the programs and resources live. These partitions do not mount in Windows or Mac OS. I will be adding an article about how to do that soon. These step by step instructions assume you are installing on a new card or a card that has not been with an EV3 Lego Robot. 

Before we can run a Quorum program on a LEGO™ robot, we have to install a special kind of software called a "firmware." to accomplish this, we need to use the robot's expansion slot, which accepts a microSD card (just like many digital cameras and phones). Not all microSD cards are supported. You need one with the following characteristics:

Part 1:  format your card.

Step one. DOWNLOAD the official SD card formatting program unzip it and install it. 

Step two: Insert your SD card

Step three: Run the  SD card Formatting app and make sure your SD card is selected.

Screen Shot 2019 06 27 at 4.46.30 PM

 Step four: Give the volume a name like LeJOS13.

Step five: Press the Format Button. Your SD Card will now be ready for Part 2!


Part 2. Installing the lejOS firmware on the compatible formatted microSD card.

Step 1. Download the lejOS install files by clicking the following link. Download the LEGO™ Robotics Installation Kit for Quorum, version 1.3. This will send you SourceForge and the download should start automatically. 

Step 3: Once the download is complete you can click on the file in the browser  (lower left corner) and then select open from the menu that appears. that will unzip the file and open the folder in Finder. You will see a folder named "Robot." Open the Robot folder and you will see the files we want to place on your SD card. 

Screen Shot 2019 06 27 at 5.34.26 PM


These are the files you need to copy to your micro SD card (named LeJOS13). Be sure to NOT copy the "robot" folder. 

Step 6. Copy the files and folders There are many ways to copy the folders and files on to the SD Card. You can Drag and Drop them. You will see the SD card you Named LEJOS13 to the left. 

Step 7. Eject and remove the SD card.

Step 8. Insert the micro SD card into the slot on the side of the EV3 robot.

Insert Micro SD card in the EV3

Step 9. PRess the center button on the EV3 robot. The Process may take 10-15 minutes. 

What is happening?  The card is being repartitioned with a new 500mb Fat32 partition and a hidden Linux ext2 partition using the rest of the card. The ext2 partition is where the program you write will be loaded along with the resources needed to run those programs.  You will not be able to see the ext2 partition on a Macintosh or Windows computers unless you add some special software to your computers to do that. I will create a new article on where to find these free software patches and why you might want to do that. 

Step 10. The EV3 will reboot and start up in LEJOS and you are ready to go.