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Topic: Led strip not responding to commands from Uno R3 board. (Read 38 times) previous topic - next topic

sergeidrew

Hello,

I am a first time user of an Arduino board and i am using the "Elegoo Uno R3" in which i am trying to control 16.4ft of Alitove WS2812B LED lights.

Following the "https://www.temposlighting.com/guides/how-to-add-custom-leds-to-any-project" tutorial i have coppied it 1 for 1 however my LED's do not respond.

I have now got a "5V 2A barrel power supply" but i was using my monitor power supply before which was giving me a couple red flashing lights on the strip but wasn't responding to any other commands and i'm not even sure if i was using the "blink" example code at that point either. 

Now when i have it plugged in and i verify and upload the blink command to the board with the LED's connected non of them blink or flash.

Also the LED strip is warm to the touch closest to where the power is coming from.

Any help is appreciated, will attach images too.

https://ibb.co/fXxJxFP
https://ibb.co/yNMJhpC
https://ibb.co/CtM06J6





sterretje

Don't post photos of code; post code between [code] and [/code]

The standard blink does not work with WS2812B leds. Download e.g. the FastLed library and go through the examples.

What are the specs of that "monitor power supply" ? If it's more than 5V, you will have damaged your strip.

How many leds in the strip? 2A on 5 meter strip is probably not enough.
If you understand an example, use it.
If you don't understand an example, don't use it.

Electronics engineer by trade, software engineer by profession. Trying to get back into electronics after 15 years absence.

sergeidrew

Hello thank you for your help,
The monitor power supply had an output of 12Vdc == 3.0A.
Now using the FastLED blink example and uploading it to the board also does nothing to the LED strip.
The LED strip has 150 pixels.

sterretje

If that 12V went directly to the 5V and GND of the strip, you have damaged the strip.
If you understand an example, use it.
If you don't understand an example, don't use it.

Electronics engineer by trade, software engineer by profession. Trying to get back into electronics after 15 years absence.

sergeidrew

Will purchase a replacement strip and try again, thank you

ballscrewbob

@sergeidrew

Your topic was Moved  to it's current location / section as it is more suitable.

Could you also take a few moments to Learn How To Use The Forum.

Other general help and troubleshooting advice can be found here.
It will help you get the best out of the forum in the future.


It may not be the answer you were looking for but its the one I am giving based on either experience, educated guess, google (who would have thunk it ! ) or the fact that you gave nothing to go with in the first place so I used my wonky crystal ball.

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