A 3D-printed snowflake made with Arduino Uno. Has 91 addressable RGB LEDs.
Project in progress by James Cameron
We use an Uno to control 36 servo motors and create digital animated artwork.
Project tutorial by Doug Domke
Color sorter based on Arduino Nano, TCS230/TCS3200 color sensor, step motor with gear, and small 9g servo.
Project tutorial by Mirko Pavleski
Hello, sorry for the slow response, no the Arduino isn't enough to power them, they are powered separately, and require a 5-volt power supply. The LEDs are wired by linking all of the 5v pins together, linking all of the grounds together and connecting the data out of one LED to the data in of another. Make sure to also link the ground to the Arduino. This is done in the order that is shown in the diagram in the wiring section above.
With all 91 LEDs on at full brightness, they would require a lot of current so you would need a power supply capable of 5V at 5A, however, the LEDs are very bright at full brightness so they would most likely be running much dimmer than this. Also, the LEDs aren't all on all of the time, as they are animating. So as long as you avoid putting all of the LEDs on at full brightness, and either only light up a few of the lights or keep the brightness low then you should be able to get away with a 5V power supply at 2A or more. In the videos, I powered the lights using a USB battery bank, and a USB cable I had that had the wires spliced. The Arduino can be powered by the same power supply putting ground in the ground pin and the 5v pin in the Vin on the Arduino.
Glad you like it, as far as I know, the code would work without any change as the APA106 is compatible with the WS2811/WS2812 LEDs. Let me know if it works.
No, it isn't waterproof so just for indoor use.
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