BINUS College college students Michael Angelo Chandra, John Lukito, and Johevin Blesstowi have written a information to constructing your individual Espressif ESP32-based 8×8×8 RGB LED dice show: the Coobie V2.
“Lately, three-dimensional illustration (3D) is standard. 3D illustration may be present in cinemas, digital modelling, AR, and VR. We’re at present shifting in the direction of a world the place the boundary of dimension is more and more being exceeded,” the workforce writes of its work. “The place the world has seen a masterful implementation of 3D show in drone swarm, we goal to develop a extra moveable, as mesmerizing and showy, albeit much less sharper, laymen-controllable 3D show within the type of Coobie V2, the web-controlled 8×8×8 RGB LED Dice.”
This RGB LED dice, constructed by a pupil trio from BINUS College, gives a devoted net app for distant management. (📷: Chandra et al)
Because the identify implies, this is not the primary Coobie. The unique mannequin, the scholars admit, had its issues: it was cumbersome, fragile, and had points with sign interference. Coobie V2, in contrast, is extra simply moveable, much less glitchy, and extra sturdy — and the devoted app used to manage the unique dice has been changed by an online app, permitting for customized animations to be outlined and performed straight in-browser.
“We created this web site utilizing Subsequent.js and ThreeJS [and it] connects to the cloud backend,” the scholars clarify of the dice’s consumer interface. “This web site is an innovation by no means carried out earlier than within the grand scheme of LED Dice[s]. By way of this web site, anybody can create their very own sample, animation, something they’ll consider that’s higher represented in 3D.”
3D-printed jigs are used within the dice’s building, to bend LED legs and align the whole lot throughout meeting. (📷: Chandra et al)
By way of the {hardware}, the Coobie V2 is pushed by an Espressif ESP32-S3 microcontroller with a degree shifter, eight MOSFETs, 12 Shenzhen Sunmoon Micro SM16126D LED drivers, a shift register, a transistor array, 512 RGB LEDs, and a formidable 100 meters (round 328 toes) of copper wire, a bunch of PLA filament for 3D-printing jigs to type the dice, and “numerous feminine and male [pin] headers.”
The complete undertaking is documented on Instructables, full with 3D print information for the jigs and hyperlinks to the supply code beneath an unspecified license.