Jump to content
UltiMaker Community of 3D Printing Experts

Another Heated bed Issue

Recommended Posts

Posted · Another Heated bed Issue

Hi there,

Earlier this year i bought myself the ultimaker. Played with it, liked it, but wasnt happy with the ABS results. Soafter i moved, i installed everything again and made myself a new aluminium bed. Put a heatplate on it and voila. A heated bed. Tested it with a power supply and its working sweet. But now i wanted to hook it up to the ultimaker. So i installed a relay, hooked up the power supply and the heated bed, installed a Thermister, hooked everything up to the ultimaker board(heater3 and Temp 3).

But it was reading 0 celcius.. So i figured out that this was an firmware issue. So thanx to the magic Marlin build tool, i compiled myself a new firmware where my sensor was configured. I could now red the temperature. Although its about 10 degrees of, it is measuring the temp. But when i input my wanted temp for my bed, nothing happens. I see no light on heater 3 output, nor is my relay being enabled.

I installed it in the heater 1, and the relay setup works fine.

I looked at the marlin tool again and couldnt see anything there that i figure needed to be enabled to get the heater 3 going.

So now i'm kinda stuck. Anybody got an idea?

  • Link to post
    Share on other sites

    • 2 weeks later...
    • 2 weeks later...
    Posted · Another Heated bed Issue

    I am having this problem too with more or less the same setup. I have a relay hooked up to the heater output and soldered on the 4.7k resistor and attached an epcos 100k thermistor. I built the firmware using the online marlin builder. Now the first problem is that it's showing 1.6 degrees for the temperature, which is about 20 degrees off. The second problem is that it's not activating the relay so nothing happens. Any ideas?

  • Link to post
    Share on other sites

    Posted · Another Heated bed Issue

    I found in the cold weather that if the heater bed is too cold, the firmware seems to assume it is an error and won't turn it on. Your offset error could be producing the same effect.

    I pointed the workshop fan heater at the bed for 30 seconds, and once it registered > 5 or so degC it would suddenly work.

    I also find that at low temps it is inaccurate, but near operating temp, 50-70degC, it is very close, which is what matters.

  • Link to post
    Share on other sites

    Posted · Another Heated bed Issue

    Mine is way off even when the temp is higher, when it's showing 50C in reality it's close to 100C. I have an adjustable power supply hooked to the heated bed so I can control the temp with that so at least I'm able to use the bed.

    I now have a heated chamber too as just the heated bed was causing horrible cracking on larger parts.

  • 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

      • UltiMaker Cura 5.3 stable released
        In this stable release, Cura 5.3 achieves yet another huge leap forward in 3D printing thanks to material interlocking! As well as introducing an expanded recommended print settings menu and lots of print quality improvements. Not to mention, a whole bunch of new printer profiles for non-UltiMaker printers!
          • Thanks
          • Like
        • 31 replies
      • Here it is. The new UltiMaker S7
        The UltiMaker S7 is built on the success of the UltiMaker S5 and its design decisions were heavily based on feedback from customers.
        So what’s new?
        The obvious change is the S7’s height. It now includes an integrated Air Manager. This filters the exhaust air of every print and also improves build temperature stability. To further enclose the build chamber the S7 only has one magnetically latched door.
        The build stack has also been completely redesigned. A PEI-coated flexible steel build plate makes a big difference to productivity. Not only do you not need tools to pop a printed part off. But we also don’t recommend using or adhesion structures for UltiMaker materials (except PC, because...it’s PC). Along with that, 4 pins and 25 magnets make it easy to replace the flex plate perfectly – even with one hand.
        The re-engineered print head has an inductive sensor which reduces noise when probing the build plate. This effectively makes it much harder to not achieve a perfect first layer, improving overall print success. We also reversed the front fan direction (fewer plastic hairs, less maintenance), made the print core door magnets stronger, and add a sensor that helps avoid flooding.

        The UltiMaker S7 also includes quality of life improvements:
        Reliable bed tilt compensation (no more thumbscrews) 2.4 and 5 GHz Wi-Fi A 1080p camera (mounted higher for a better view) Compatibility with 280+ Marketplace materials Compatibility with S5 project files (no reslicing needed) And a whole lot more  
        Curious to see the S7 in action?
        We’re hosting a free tech demo on February 7.
        It will be live and you can ask any questions to our CTO, Miguel Calvo.
        Register here for the Webinar
          • Like
        • 18 replies
      • UltiMaker Cura Alpha 🎄 Tree Support Spotlight 🎄
        Are you a fan of tree support, but dislike the removal process and the amount of filament it uses? Then we would like to invite you to try this special release of UltiMaker Cura. Brought to you by our special community contributor @thomasrahm
        We generated a special version of Cura 5.2 called 5.3.0 Alpha + Xmas. The only changes we introduced compared to UltiMaker Cura 5.2.1 are those which are needed for the new supports. So keep in mind, this is not a sneak peek for Cura 5.3 (there are some really cool new features coming up) but a spotlight release highlighting this new version of tree supports.  
          • Like
        • 23 replies
    • Create New...