When you’ve seen one LED matrix, you’ve seen all of them. The scale and pitch might fluctuate from one panel to the following, however it’s the identical fundamental concept: a bunch of LEDs specified by a grid. There may be no less than one obvious exception to this rule now, nevertheless. A hobbyist who goes by the identify yotudero has constructed a singular LED matrix that nearly appears to be like too good to be true. With some 3D-printed elements and some fundamental digital parts, you possibly can have one too.
Attaching LED strips to the backplate (📷: yotudero)
The important thing to the construct is a customized housing designed and constructed by yotudero. It has a 3D-printed backplate that holds all the pieces collectively and acts as a mounting level for the LEDs. A 3D-printed grid sits on prime of the backplate to cleanly separate the sunshine from the LEDs into particular person pixels. This was spray-painted white to extend the panel’s brightness. A 0.5mm-thick layer of polypropylene foil was glued on prime of the grid to behave as a diffuser, adopted by a 3D-printed entrance cowl to prime issues off.
WS2815 RGB LED strips have been connected to the backplate with their very own adhesive. They have been connected in a 16×16 array to light up the round parts within the grid, and this was interwoven by one other 15×15 array that illuminates the diamond-shaped parts. The LED strips have been all daisy-chained collectively and powered by an exterior 12V energy provide.
The Wemos D1 Mini Professional (📷: yotudero)
To manage the show, a Wemos D1 Mini Professional improvement board with an ESP8266 microcontroller was added to the construct. An LM2596 voltage regulator steps the enter voltage all the way down to 5V to energy this board. To drive the LED strips, a GPIO pin from the D1 Mini Professional is related to their knowledge pin through a 74HCT125 voltage-level shifter.
The electronics are tremendous easy, so when you’ve got an honest 3D printer, this undertaking wouldn’t be too terribly tough to breed. And after you watch the video beneath, you’ll positively need your personal!