MagicHome v2 Led Strip - White Channel

[xoseperez]

Originally reported by: Danilo Daloiso (Bitbucket: Danny89530, GitHub: Danny89530)

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Hi, I'm trying to set white channel on Magic Home LedStrip v2 via MQTT but, when i try to obtain white color, I got two different situations:

• If I set RGB values to 255 the led stop working and the lights turns off till one of the three values will be decreased.
• If I set the /channel/3/set to 255:
  • If RGB are at 0 Nothing happens
  • If RGB are at not equal to 0, the leds stop working

Regards

[xoseperez]

Could it be that you have the "Use white channel" setting to ON in the web interface? This setting commands ESPurna to use the 4th channel as white when R, G and B have the same value, so instead of using 192 (for instance) for R, G and B, it will only use 192 for the forth channel and RGB to 0. Now if this forth channel is not working you have the situation you are describing in you first message...

You should be able to set the channels individually by turning off the "Use color picker" option in the light panel of the web UI.

[xoseperez]

Original comment by Danilo Daloiso (Bitbucket: Danny89530, GitHub: Danny89530):

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Upgraded to 1.12.1, same problem encountered

[xoseperez]

Original comment by Danilo Daloiso (Bitbucket: Danny89530, GitHub: Danny89530):

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Hi @xoseperez any advice about the problem?

In addition I can tell you that is possible to set White color via the web interface.

Regards

[xoseperez]

Original comment by Danilo Daloiso (Bitbucket: Danny89530, GitHub: Danny89530):

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I've this problem with both of mine ledstrips and they works with the power adapter provided in the original package. The strips are 2meter one and less than 4m the other. No problem with every combination of RGB, just with White one

Thanks for your support. Regards, Danny

[xoseperez]

It looks like a power issue. How many LEDs are you driving and what is your power supply current rate? Is it trusty?

[xoseperez]

@Danny89530 Any update on this?

[Danny89530]

Hi @xoseperez sorry for the delay. I've modified the configuration as your suggestion, disabling the colorpicker and using the 4 channels dimmers but nothing change. I Think there are no difference modifying the color via MQTT (single color) channel or via these four dimmers. When I change the value of the 4th dimmer, the White one, nothing happen.

Regards, Danny

[xoseperez]

My guess is that either the board has a different layout or it's faulty.

[Danny89530]

IMHO the first one is the answer, that because I've two different MagicHome controllers and both with same problem.

[xoseperez]

@Danny89530 Can you post a picture of the board here? Both sides

[xoseperez]

I'm going to close this since there has been no feedback for months. Please, feel free to reopen if necessary.