Jump to content

Heated bed issue with Temp sensor working


Recommended Posts

Posted · Heated bed issue with Temp sensor working

Hello, I am having some issues getting a 2nd temperature sensor working for a heated bed.

I bought this sensor.

http://ultimachine.com/content/thermistor-100k

I added a 4.7k Resistor to R4 Yellow-Purple-Red-Gold is the resistors color

Modified Marlin

Configuration.h

// 6 is EPCOS 100k

#define TEMP_SENSOR_0 -1

#define TEMP_SENSOR_1 0

#define TEMP_SENSOR_2 6

#define TEMP_SENSOR_BED 0

Uploaded to the Arduino the new configuration

NTC thermistors Series/Type: B57560G, B57560G1

Connected to the Temp 3 terminal on the board. GND and SIG leaving the 5v empty. (see attached picture)

 

https://docs.google.com/open?id=0B3IYX8 ... 3dPeVRMNWM

Connected with printrun USB connected and the power on

My problem is it does not work.

M105 returns

SENDING:M105

ok T:34.2 /0.0 B:0.0 /0.0 @:0 I assume these are temp readings 2 and 3

When I set the Heater to 200

I get this

SENDING:M105

ok T:35.6 /200.0 B:0.0 /0.0 @:127

@220

SENDING:M105

ok T:154.2 /220.0 B:0.0 /0.0 @:127

@100

SENDING:M105

ok T:191.4 /100.0 B:0.0 /0.0 @:0

I only have 1 heater connected and it is attached to the nozzle / hot end

Any idea or help would be greatly appreciated.

Thank you,

Brian

  • Link to post
    Share on other sites

    Posted · Heated bed issue with Temp sensor working

    Missing picture.

    You need to connect it this way:

    +5v --> thermistor ----L---> 4.7k resistor ---> gnd

    and you plug the L connector in the SIG.

    The thermistor will then be a tension partitioner and will vary it's resistance when the temperature changes. By reading the tension between the thermistor and the resistor (in point L) you will be able to relate it to what temperature is being read.

  • Link to post
    Share on other sites

    Posted · Heated bed issue with Temp sensor working

    I thought you solder the 4.7k resistor onto the controller board.

    "If you solder a 4.7kOhm resistor to the Ultimaker PCB (R4 if you use TempSensor3 or R21 if you use TempSensor2) you can measure the temperature of the bed using a Thermistor more info. "

    http://wiki.ultimaker.com/Heated_Bed#Sensor

    http://wiki.ultimaker.com/File:Bedconnection.png

    If I understand your asci schematic correctly, would this be the proper way to connect the temp sensor ?

    https://docs.google.com/open?id=0B3IYX8 ... W11c21EZVk

     

    Missing picture.

    You need to connect it this way:

    +5v --> thermistor ----L---> 4.7k resistor ---> gnd

    and you plug the L connector in the SIG.

    The thermistor will then be a tension partitioner and will vary it's resistance when the temperature changes. By reading the tension between the thermistor and the resistor (in point L) you will be able to relate it to what temperature is being read.

  • Link to post
    Share on other sites

    Posted · Heated bed issue with Temp sensor working

    So my issue was that I did not have a 2nd resistor in place.

    One resistor goes on the Ultimaker PCB and the other spans between the thermistor terminal

    This page

    http://reprap.org/wiki/Temperature_Sens ... tor_Values

    and this page helped a lot

    http://hydraraptor.blogspot.com/2007/10 ... y-way.html

    Also this schematic

    http://reprap.org/wiki/File:Cache-28487 ... 7b1d24.jpg

    In the Jpg above R2 is soldered on the Ultimaker PCB and R1 needs to be an additional resistor.

  • Link to post
    Share on other sites

    Posted · Heated bed issue with Temp sensor working

    I think the optional 4.7k resistor on the Ultimaker PCB actually IS the resistor you need to connect between the 'signal' and the ground. So with that resistor in place you just need to connect the thermistor between +5 and SIG.

    If I look at this picture from you:

    https://docs.google.com/file/d/0B3IYX8i ... RMNWM/edit

    then you have connected the thermistor between GND and VCC. Not sure where you got the pinout from, but on the board it clearly reads GND +5V SIG.

  • 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

      • 🎄✨ Thingiverse Tree Ornament Challenge! ✨🎄
        We've been running a Tree Ornament Challenge with a chance to win an UltiMaker S3 or colorFabb filament.
        Design a 3D printable tree ornament and join our festive challenge on Thingiverse. 🎁✨


        📆 Submission Deadline: December 22
        🏷️Tag your designs with Holidays2023

        Click here to join and check out the over 300 other amazing designs

        How to Enter
        Design an Ornament
        Create a 3D printable tree ornament that captures the magic of the winter season. Think snowflakes, sleighs, reindeer, cozy mittens, or anything that embodies the joy of the holidays. Upload to Thingiverse
        Share your masterpiece on Thingiverse and add the tag Holidays2023. Don't forget to include a captivating description and images that showcase your design from different angles. Submit by December 22
        All entries must be submitted by December 22nd to be eligible for consideration.
          Entering a new design
         
        Entering an existing design
         
         
        Winning designs should:
        Be original Creations
        Your designs should be original works, avoiding the use of others' intellectual property without permission. Include STL Files
        Each submission must include at least one STL file for 3D printing. Showcase a Completed Print
        Provide at least one photograph featuring a completed print of your design. Include Documentation
        Share the creative journey! Include documentation of your design process, giving us a peek behind the scenes. For example, show a screenshot of the model in your design program. Use the Tag Holidays2023.
        Use this tag to ensure your entry is counted in the Tree Ornament Challenge. Be submitted after October 1st, 2023
        Ensure your design was uploaded to Thingiverse after October 1st, 2023. Adhere to Submission Guidelines and Terms of Service
        Make sure your submission aligns with our guidelines and Thingiverse's Terms of Service.  
        Good luck 🎉
        • 1 reply
      • S-Line Firmware 8.3.0 was released Nov. 20th on the "Latest" firmware branch.
        (Sorry, was out of office when this released)

        This update is for...
        All UltiMaker S series  
        New features
         
        Temperature status. During print preparation, the temperatures of the print cores and build plate will be shown on the display. This gives a better indication of the progress and remaining wait time. Save log files in paused state. It is now possible to save the printer's log files to USB if the currently active print job is paused. Previously, the Dump logs to USB option was only enabled if the printer was in idle state. Confirm print removal via Digital Factory. If the printer is connected to the Digital Factory, it is now possible to confirm the removal of a previous print job via the Digital Factory interface. This is useful in situations where the build plate is clear, but the operator forgot to select Confirm removal on the printer’s display. Visit this page for more information about this feature.
          • Like
        • 0 replies
      • Ultimaker Cura 5.6 stable released
        Cura now supports Method series printers!
         
        A year after the merger of Ultimaker and MakerBotQQ, we have unlocked the ability for users of our Method series printers to slice files using UltiMaker Cura. As of this release, users can find profiles for our Method and Method XL printers, as well as material profiles for ABS-R, ABS-CF, and RapidRinse. Meaning it’s now possible to use either Cura or the existing cloud-slicing software CloudPrint when printing with these printers or materials
        • 17 replies
    ×
    ×
    • Create New...