Powering WS2812b and Arduino

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1

This is one of my first Arduino projects, I've been using a Arduino Uno Wifi Rev2 to control a 16.4ft strip of Neopixels from a server that I coded. I have a 5V 15A power supply for the lights, and a 9V plug for the Arduino. A whole Arduino Uno Wifi might be a little overkill, but I figured I could always downgrade to a smaller microcontroller later.

It all works the way I like right now, and I have the power supplies separate, but my question is is there a safe way power it all off of one power supply? I'd like put all the wiring in a case, and I feel as though that having one source of power (and only needing one outlet) would be a better practice, and be better aesthetically.

Any tips would be helpful.

2

Connect the 5V you use to power the LEDs to the 5V pin of the Arduino. No need for anything to go into the power socket.

3

Grumpy_Mike:
Connect the 5V you use to power the LEDs to the 5V pin of the Arduino. No need for anything to go into the power socket.

Do you mean connect the 5V 15A to the Arduino's 5V pin? Or power the LEDs from the Arduino? The main reason I'm using the power supply is that I didn't think the Arduino would be able to supply enough current to fully power the LEDs at the end of the strip.

4

Mike's answer is pretty clear. Connect the 5V power supply to the Arduino 5V pin and the LED strip.

There's tons of schematics on the Google machine. this was the very first one:

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