Jump to content
Ultimaker Community of 3D Printing Experts
derbroti

PID Auto Tune - Head Fan not spinning up?

Recommended Posts

Hi,

quick question: is the head fan supposed to spin during the auto tune procedure?

Mine is not... and as soon as I cancel the auto tune run the fan starts spinning.

I am running an UM2 with 2.1.4 board, so the fan is pwm controlled.

And indeed, when I look at the code, manage_heater() is never called during the for(; ; ) loop of the auto tune...

Cheers

Edited by Guest

Share this post


Link to post
Share on other sites

Interesting. That could be a bug. Afaik the pin auto tune is implemented very roughly on um2 firmware and was never changed. UM has the tendency of leaving old machines without any update for the small % of stuff that the 99% of users don't use.

You could make a trick, very easy. Preheat the hotend to 50-60C so the small fan kicks in, and then run the autorune. It shouldn't change the values much (or none at all).

Share this post


Link to post
Share on other sites

Would you consider the 2+ old as well? ;) In that firmware it is the same.

For a solution: yes, preheating before keeps the fan on but I wanted to see if it is worthwhile to open a github issue...

 

Um2+ firmware isn't much different than um2, they only added a bunch of material profiles, and they never fixed the system to update the materials or any significant change. So yeah :)

I think is worth, since is a bug of the way the pin is called only when heating, and not when it just heats.

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

Announcements

  • Our picks

    • Architect Design Contest | Vehicles.
      We're open for entries! - Design and submit your 3D designs of architectural entourage - vehicles - for a chance to win a large filament pack. Presenting an idea, an architectural design or something as big as an urban project isn't easy. A scaled model can really help to get your idea across.
        • Like
      • 24 replies
    • What The DfAM?
      I'm Steve Cox, an experienced engineer familiar with 3D printing. I wanted to share some DfAM guidelines with this community to help and make stronger parts.
      I'm also an Autodesk Certified Instructor for Fusion 360, so many of the images in ...
        • Thanks
        • Like
      • 22 replies
×

Important Information

Welcome to the Ultimaker Community of 3D printing experts. Visit the following links to read more about our Terms of Use or our Privacy Policy. Thank you!