RGB LED SK6812 vs Mini?
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Hi *,
I try to run 3 SK6812 RGBNW LEDs via the Neopixel port on my Mini5+ without any success. H hope that somebody can help me here. (Fw: 3.4)
I have measure +5V on the newpixels so I guess that the jumpering for the 5V supply is correct.
I tried things like that:
M150 X3 M150 R255 B255 P255 S20 X3
To turn on the leds but without success, the neopixels remain dark. I tried X1 and some other parameters but nothing has changed.
Any ideas?
Cheers, Chriss
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@chriss You may need F0 on the second M150 after the X3 command is set.
https://docs.duet3d.com/User_manual/Reference/Gcodes#m150-set-led-colours -
@stephen6309 No change unfortunately.
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@chriss On my Mini and 6HC I used a separate 5vdc power supply. The mini may not have enough power to power them.
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@chriss The Mini needs an external 5vdc to power the neopixel.
https://docs.duet3d.com/en/User_manual/Connecting_hardware/IO_Neopixel_DotStar -
My understanding is that the Mini5+ can deliver 3A. I guess that this would be enough for one neopixel I'm playing with at the moment...
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@chriss said in RGB LED SK6812 vs Mini?:
My understanding is that the Mini5+ can deliver 3A. I guess that this would be enough for one neopixel I'm playing with at the moment...
The Mini5+ is limited to 1A total from the 5V rail including the internal current draw.
This is to connect and power NeoPixel LED strips (DotStar LED strips are not supported) . Connect the DO pin to Neopixel DI. External 5V must be supplied to the "EXT 5V" header to power the NeoPixel array, they cannot be powered from the onboard regulator.
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Got it.. I had the hope that I can drive 3 tiny LEDs without a external source... well well....
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@chriss if it's just 3 LEDs then you could pick up +5V from one of the IO connectors and feed it into the 5V_EXT input.
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@dc42 said in RGB LED SK6812 vs Mini?:
@chriss if it's just 3 LEDs then you could pick up +5V from one of the IO connectors and feed it into the 5V_EXT input.
Ahhhhhh... that's a very, very good idea... I need to check for a free 5V pin on the IO ports..... I guess that I need to feed GND too.
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@chriss no, just the 5V. The GND on the Neopixel connector will be sufficient.
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@dc42 Thanks!