@neotko Yes I use this firmware, to turn them on.
But I looking for a way that there are on when I turn on the Ultimaker.
Right now I always have to turn them on when I switch on the UMO by the UltiControll.
Is there a way to set them to 255 when you powered on the UMO? (there set back to 0 when I turn on and off)
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neotko 1,417
https://ultimaker.com/en/resources/20983-ultimaker-original-custom-firmware-builder
Use that firmware to get full Led control thanks to @amedee
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