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@bonjipoo you can use the PNP, you just need more three resistors for each, two for the divider and one pull down.
if switching to NPN is simpler then go for it, but PNP will work
@grudairian, increasing voltage from 12V to 14V will increase heater power by 36%. So definitely worth trying if bed heating is too slow. Remember to re-run heater tuning on both hot end and bed.
@bberger said in fans on different voltages:
are the 'always on' fans actually always on or can those be toggled (on/off)?
they are directly connected to the chosen supply, no pwm, no on/off.
