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Hello all,
I would like to control the UV LEDs by controlling a relay with fan pin d9 of the Ramps board.
When I turn on the "fan" by command M106 nothing happens and the output voltage from d9 is 0.
Someone knows what's going on?
Thank you
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try M106 S255
the "s" is the signal level 255 = 100% ....127 = 50% and so on
to switch off you can use M107 or M106 S0
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