LEGO Grand Carousel with HT16K33 Breakout, LEDs, Slip Ring Upgrade

Thanks so much to forums user trueger for sending this in – this is such an incredible upgrade to the already impressive Grand Carousel LEGO kit!

Check out the work that went into upgrading this kit:

Watch the video below to see it in action. More documentation, code, and other assets can be found here.


Read more.

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Adafruit 16×8 LED Matrix Driver Backpack – HT16K33 Breakout: This is the magic sauce in our 7-segment and matrix backpacks, now available in breadboard-friendly breakout board format. The HT16K33 is a neat little chip that has the ability to drive a multiplexed 16×8 matrix (that’s 128 individual LEDs). The communication protocol is I2C so it uses only 2 pins, and you can have up to 8 selectable I2C addresses so thats a total of 8 matrices, each one controlling 16×8 LEDs for 1024 total LEDs. Read more.

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  1. This looks AMAZING. What an upgrade! I’d love to do something similar for my set, but I’m having trouble tracking down a slip ring. Or, at least, one that would work with the kit without costing an arm and a leg, but Google isn’t being all that helpful. Did trueger use something similar to these – https://powerbyproxi.com/slip-ring/ ? Any help would be appreciated – really inspired by this upgrade! 😀

  2. Hi Nathan. Thanks for chiming in.

    Check out the original forums thread for some more intel: https://forums.adafruit.com/viewtopic.php?f=47&t=114417&p=571683#p571683

    The maker specifies they used this slip ring: https://www.alibaba.com/product-detail/Through-hole-slip-ring-model-HR004_60587938074.html

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