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@Cambo3D,

my heat bed is wired with 18 gauge.

clark

thanks, i'll try it.

clark

and the RAMBO board will be okay with a higher voltage power supply plugged into the bed ports?

oh, that makes sense. How do I increase voltage in the firmware, or are there pots that can be adjusted on the RAMBO? My multimeter measures the voltage at the heat bed points as 11.33v

thanks

Any idea why it won't go higher? Can this be sped up w/o a lot of complicated electronics?

my build platform is Onyx+1/4" aluminium heat spreader + kapton tape

Is there any adjustment I can make in firmware, or on the RAMBO?

thanks,

clark