since i got a PWM expansion with 4 ports free. is it possible to trigger a external relay by dimming expansion port.
i'd rather to use dosing pump library. It will be much easier to adjust interval timing.
i suppose code should be like this.
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ReefAngel.DosingPumpRepeat1(ReefAngel.PWM.SetChannel(2,100))
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ReefAngel.DosingPumpRepeat1(Pinmode(PWMports[2],output));