How to enable extruder cooling fan in Marlin?

Mostly Printed 3D Printer - MP3DP Troubleshooting
1

Hi,

I have a Titan Aero, and I’m using a Mini Rambo, both of which I got from here. I am using the MP3DP511_MRambo firmware.

I understand that there is an adjustment that can be made in the firmware so that the extruder cooling fan will turn on/off automatically at 50 degrees, but I’m not exactly sure what changes that I need to make in Marlin for that to happen?

Just for clarification, I am not referring to the fan that cools the printed part, which can be controlled in the slicer software. I am talking about the fan that comes with the Titan Aero, that is mounted directly to it. This fan does not come on at all during printing, but I can turn it on from the LCD so I know that it works.

Thanks,

Kirklan

2

If you use my current firmware on the github link it is already done for you.

3

Located in config.adv it is two changes, the pin for the fan port, and the temp. If you wanted to see what I did.

4

Perfect, thank you!

5

Can I edit this file without building new firmware? How would one do that? Or should I just load the MP3DP version?

I am running the CNC firmware build as I have one MPCNC and swap between router and hot end.

6

You need to edit and swap the firmware. E steps, thermistor settings are a must.