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I, like your typical maker, love addressable LEDs. So after I wanted to do an experiment involving PCB castellations, the pursuit shortly morphed right into a sequence of small side-soldered cubes that might every mount WS2812B LEDs.
Every of those cubes takes in knowledge, plus 5V and floor from an interface PCB on the underside, leaving 5 light-up PCBs with a single WS2812B unit every to light up the edges and high. This interface PCB additionally passes alerts on the following LED unit through an output pin, and has secondary pins for 5V and floor as nicely. They cubes look unbelievable as examined simply after 3:00 within the video under, utilizing my JC Professional Macro 2’s output performance.
In fact, a string of sq. LED “bulbs” on a desk is simply so attention-grabbing, and for the following step on this undertaking, I positioned three in a modified wine bottle on wire “stems.” For management right here I used a Wemos D1 mini ESP8266 board, together with the unbelievable WLED firmware that enables for a variety of time-based lighting results.
The one downside with utilizing an ESP8266 is that it alerts at 3.3V, which resulted in flickering because the LED energy provide is at 5V. Fairly than settle for this example, or use a standard degree shifter for the sign, I as a substitute added a diode in sequence with the availability, dropping the voltage right down to a degree that the three.3V sign might reliably management.
The outcomes are fairly pleasing, shining away properly on a shelf in my workplace. It is programmed to show off at evening and alter colours at midday, nonetheless, that is solely skimming the floor of WLED’s capabilities.
By the way, the LED PCB shadow field that I put in in mid-2021 makes use of the identical firmware. As proven on the very finish of the video, the 2 light-up constructions can synced for a coordinated lighting show.
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