Is It Possible To Run A Fan Off E1 Heater?

[ElmoC]

I was needing to add another controlled fan on my Duet 0.8.5 and was thinking of using one of the GPIO pins to handle it. But to save adding a mosfet to control the fan, I was wondering if it might be possible to use the E1 output to do this? I would think it possible by setting it to a temperature, but with out a thermistor attached, and even with one, the system would eventually see it as a heater fault.

[dc42]

You can disable the E1 heater by sending M307 H1 H2 A-1 C-1 D-1, then you can use M42 P1 P2 S# to control the PWM on that pin, where # is 0.0 - 1.0 or 2 - 255.

[ElmoC]

For E1, it was H2 and P2.

(This comment is for anyone else searching on this subject)