Connect a Lego Wedo and Muse EEG headset to control objects in water with your mind.

Download the project and launch Cognimates!

Have you implemented a Waterkinesis activity? Have feedback to share? Questions about how to get started? Get in touch!

Here is a tutorial to get you started:

  • Step 1: Load the simple version of Waterkinesis here. This project uses the Muse extension, which you can use to record your brain EEG values, and the Lego Wedo extension, which lets you program with a Lego Wedo.

  • Step 2: Connect the Lego Wedo using the Scratch Device Manager, and load the Lego Wedo extension on Cognimates.

  • Step 3: Click the green flag to connect to your Muse headset. Follow the notifications and pair your device with the Muse headset.

  • Step 4: Once your headset is connected, watch the Lego Wedo change light colors based on your EEG values! The current threshold values are set to 100, but the best thresholds for you might be different. Click the “Get value of” blocks to see your EEG values and figure out what your thresholds should be.

  • Step 5: Try adding movement blocks! Make the Wedo move forward and change directions depending on the side of your body that moved.

  • Step 6: You can choose to move the Wedo on land, or try a water-based activity with this code! We recommend you place the Lego Wedo smarthub and motor in a waterproof box, drill a hole to the side of the box, and use a lego stick piece to connect a plastic propeller to the wedo motor. Test out other mechanical designs that you think will also work!