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Thread: i need of help

  1. #1

    i need of help

    i have a big problem with my printer i cant get it to print. the printer works and moves all the axis but the extruder motor just doesn't want move . i have connected the motor to other axis and it works. ive also switched over the driers with other axis and they work just the extruder does not to work i highly suspect that i have a problem with the Firmware i tried using Marlin but haven't managed to get it working at all. i have used reprap and that makes everything work apart from the actual extruder. Please help !! attached you can find the current firmware i am using.
    it is a pursa i3 stile printer using a ramps 1.4 board with a reprap lcd . it doent really matter what firmware there is as long as it works. if any one could help me i would much appreciate it
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  2. #2
    Engineer Marm's Avatar
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    The very last thing I want to do is download a random zip file from the internet.

    Isolate the extruder motor and see if you can get it to run on it's own. Rule out the possibility of it being a faulty motor. If you have another stepper motor, plug that into the extruder motors cable and see if it will run.

  3. #3
    Either enable cold extrusion or heat up the extruder before you extrude anything. Ramps won't extrude cold to prevent damage to your extruder / hotend.

  4. #4
    Quote Originally Posted by 3dkarma View Post
    Either enable cold extrusion or heat up the extruder before you extrude anything. Ramps won't extrude cold to prevent damage to your extruder / hotend.
    I have tried that and failed. I have tried to print an object with the correct temperature but still no extrusion. I have just noticed that in the configuration on the LCD, it says that the extruder steps/mm is 0.00 but I cannot find how to change it. Any idea how please?

  5. #5
    Quote Originally Posted by Marm View Post
    The very last thing I want to do is download a random zip file from the internet.

    Isolate the extruder motor and see if you can get it to run on it's own. Rule out the possibility of it being a faulty motor. If you have another stepper motor, plug that into the extruder motors cable and see if it will run.
    You are right to do so. I have isolated the motor and also the driver and they work fine. They just do not work when in the extruder place.

  6. #6
    M92 to set your extruder steps per mm http://reprap.org/wiki/G-code#M92:_S...steps_per_unit. Calibrate as per the reprap wiki guide [url]http://reprap.org/wiki/Calibration#Extrusion[url].

    Your initial setting should be based on the type of extruder you have. I have a Wades, set to 711.11 steps per mm for the extruder. A direct drive extruder will have a smaller number.

  7. #7
    Quote Originally Posted by 3dkarma View Post
    M92 to set your extruder steps per mm http://reprap.org/wiki/G-code#M92:_S...steps_per_unit. Calibrate as per the reprap wiki guide [url]http://reprap.org/wiki/Calibration#Extrusion[url].

    Your initial setting should be based on the type of extruder you have. I have a Wades, set to 711.11 steps per mm for the extruder. A direct drive extruder will have a smaller number.
    the problem is uploading the g code. as you can see from the screen shot it doesn't want to send it. i have also made a test g code with the M92 X350 command to test but it has not doen anything eighter. im getting really frustrated about it.
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    • File Type: jpg 1.jpg (19.1 KB, 8 views)

  8. #8
    You've lost me here. Your screen shot is too low a resolution to make anything out, and problems uploading the g code doesn't make sense without more information. Alse, M92 X350 sets steps per mm for the X axis, not the extruder. You should be able to directly send g code commands to your printer by connecting to your printer, then clicking on the "Manual Control" tab in repetier host. At the top of the panel you can enter a g code command to send to the printer.

    First, set your printers extruder temperature and wait for it to get to the correct temperature.
    Second, send the following g code command to the printer, to set e-steps per mm for the extruder:
    M92 E500
    Third, send the following g code command to the printer, to extrude 10mm of filament:
    G1 E10 F100

    If that works, you need to go through the E-steps per mm calibration routine in the reprap wiki.

  9. #9
    Thing is it says connected but than whatever i do it just stays "command waiting"
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    • File Type: jpg 6.jpg (14.3 KB, 21 views)
    • File Type: jpg 5.jpg (20.0 KB, 21 views)

  10. #10
    Have you installed the driver for your board? What board do you have? How did you get the printer to move before - through Repetier host or the LCD interface?

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