Jump to content

Recommended Posts

Posted · Fan is not running like it should.

So, recently I acquired a new fan, as my old one was busted. This was same maker, same everything. When I plugged it in, however, my fan started to make this high pitched noise, and wouldn't start via the control board. However, when I spin it's blades on my own, it keeps on running. Thinking this was only the fan model, I plugged in another 24v fan. Excluding the high pitched hum, the exact same problem was there. What can I do to fix this?

  • Link to post
    Share on other sites

    Posted (edited) · Fan is not running like it should.

    If the new fan has the same specs as the original, maybe the board pwm fan was busted by that short circuit you got (old post I remember you wrote).

    So. Easiest way to test if it's the board it's to connect the fan to the led pwm (both parts have the same circuit). Then you need to send the gcode M42 S128 to set the led pwm to 128 of 255. If the fan it's ok it should work. If the problem remains it's the fan.

    So if you do that and it works on the led pwm then your pwm fan it's dead (probably a resistor or most probably the transistor since you got a short circuit before).

    If so, I did a post long ago that explains (more or less) how to change it (but you need the propper tools and steady hand).

    So try that first and if works on the led pwm you might need a firmware modded to change the pwm fan to pwm led, this way you would have a working by gcode fan.

    Please triple check before pluging the fan to the led that the +/- it's perfectly in order, doing it wrong might break the led pwm also (if that's the problem).

    Edited by Guest
  • Link to post
    Share on other sites

    Posted (edited) · Fan is not running like it should.

    Yes. Make a txt file with the gcode commands. Remember to insert a return after each line or they won't work. Or get a gcode, edit, clean, and paste your gcode lines.

    Edited by Guest
  • Link to post
    Share on other sites

    Posted · Fan is not running like it should.

    Okay, so the fan worked as it should. Where should I go to get the custom firmware?

  • Link to post
    Share on other sites

    Posted (edited) · Fan is not running like it should.

    So fan works when using led pwm. Ok. Then you need to make your owm marlin.

    http://www.extrudable.me/2013/05/03/building-marlin-from-scratch/

    I use @amedee branch

    https://github.com/AmedeeBulle/Marlin

    On pins.h under the ultimaker 2.1 board you need to swap the pins of fan pwm with led pwm

    Edited by Guest
    • Like 1
    Link to post
    Share on other sites

    Posted · Fan is not running like it should.

    Btw I bet that the transistor died on pwn fan. If you have a friend or your know how to change smd chips it's quite easy and the transistor chip it's just 0.10€ or so.

    Here's how I changed mine

    https://ultimaker.com/en/community/17214-fan-pwm-output-0v-umo-board-solved-not-solved#reply-118977

  • Link to post
    Share on other sites

    Posted · Fan is not running like it should.

    I did same with Ultimaker Original. There is BD679 to be resoldered.

  • 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
    • Our picks

      • Help Us Improve Cura – Join the Ultimaker Research Program
        🚀 Help Shape the Future of Cura and Digital Factory – Join Our Power User Research Program!
        We’re looking for active users of Cura and Digital Factory — across professional and educational use cases — to help us improve the next generation of our tools.
        Our Power User Research Program kicks off with a quick 15-minute interview to learn about your setup and workflows. If selected, you’ll be invited into a small group of users who get early access to features and help us shape the future of 3D printing software.

        🧪 What to Expect:
        A short 15-minute kickoff interview to help us get to know you If selected, bi-monthly research sessions (15–30 minutes) where we’ll test features, review workflows, or gather feedback Occasional invites to try out early prototypes or vote on upcoming improvements
        🎁 What You’ll Get:
         
        Selected participants receive a free 1-year Studio or Classroom license Early access to new features and tools A direct voice in what we build next
        👉 Interested? Please fill out this quick form
        Your feedback helps us make Cura Cloud more powerful, more intuitive, and more aligned with how you actually print and manage your workflow.
        Thanks for being part of the community,

        — The Ultimaker Software Team
        • 0 replies
      • Cura 5.10 stable released!
        The full stable release of Cura 5.10 has arrived, and it brings support for the new Ultimaker S8, as well as new materials and profiles for previously supported UltiMaker printers. Additionally, you can now control your models in Cura using a 3D SpaceMouse and more!
          • Like
        • 18 replies
    ×
    ×
    • Create New...