Mini Rambo – Troubles

This topic contains 3 replies, has 4 voices, and was last updated by  Barry 1 week, 3 days ago.

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  • #90590

    Daniel Eibl
    Participant

    Hello everyone!

     

    I have finished the mechanical part of my Mpcnc.

    (except the belts)

     

    Now I flashed my MiniRambo (China clone..) with the latest firmware for this board that I found here with Arduino IDE 1.9

     

    I attached the motors to the board (only one X and Y, no parallel’ed yet).

    The problem is that when I try to move in repetier Host, the movement is very short (not 10mm, if I chose 10mm) and the board seems to restart after the command. The voltage goes down as you see in the Video.

    Is my board a problem?

    I use a professional 450W – 12V power supply, baudrate etc. was checked to match, I tried different baudrates and changed it in the firmware.. nothing helps.

     

    What can you think of?

    VID-20190223-WA0011-1
    20190222_212242-1
    20190223_132107-1
    20190223_132208-1
    20190223_132239-1

    The datasheet of the power supply:
    PM450-32B-1

    Rambo:

    https://www.amazon.de/gp/product/B07GJ8YNNW/ref=ppx_yo_dt_b_asin_title_o02_s00?ie=UTF8&psc=1

    #90620

    BT
    Participant

    Check the wiring to the steppers.  I can’t see what the stepper pulley is doing, but it sounds like it is not working right because it is mis-wired.

    #109522

    Xavier
    Participant

    were you able to resolve the issue?

    #109594

    Barry
    Participant

    It’s a clone.  They all seem to have issues.  I want to say it’s a stepper pinout issue, but I don’t have one to play with.  I’m thinking they got the stepper pins in the wrong order.

     

    Also, sitting electronics on plastic bags is really a bad idea, esd is a cold hearted bitch.

    • This reply was modified 1 week, 3 days ago by  Barry.
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