Stop print when PWM fan fails

cad405

It is the second time I have a failed extruder fan and the hole thing overheats and blocks the extruder. Well, with my duet 3 it is the first time.

Is it possible to have a PWM fan for the extruder and monitor its RPM in order to stop print if it fails a threshold?

Thanks.

Veti

you could write a conditional g code that checks if the fan rpm is above 0 and if not aborts the print.
and have that execute on each layer change.

cad405

@Veti Thanks!

My thoughts were to understand if someone already had made it.

I will pursue that route. When I will get it working I'll post the code for reference.

I have on my roadmap to include the magnetic filament sensor. This project is independent of that and both will work simultaneously.