Hello,

I have installed a Sculfun S9 Laser module and I am able to use it but I could like to be able to enable the dot on a low power to position my laser correctly.
I am able to turn it on mith the commands:
M950 P0 C"!exp.heater3" Q1000 ; allocate GPIO port 0 to heater3 on expansion connector, 500Hz
M42 P0 S0.01 ; set 1% PWM duty on GPIO port 0

But after that, I am not able to use the laser anymore. It always say hat "the pin is already assigned" so I have tried to unassign it by using
M950 P0 C"nil"
Without success.

How could I fix it please?

Regards,