calculating Vreff for a4988 that comes with kuman kit

New Home Forum Getting Started calculating Vreff for a4988 that comes with kuman kit

This topic contains 1 reply, has 1 voice, and was last updated by Profile photo of John John 1 week ago.

Viewing 2 posts - 1 through 2 (of 2 total)
  • Author
    Posts
  • #21954
    Profile photo of John
    John
    Participant

    I got the Kuman ramps kit on amazon awhile ago. It has the a4988 drivers (I know that the drv8825 are better and I will upgrade at some point).

    now that my machine is working and cutting, I want to tune these things. On the wiki, it says that I need to know the resistance of the sensing resistors. It also says that while the polo drivers are .05 ohms, that chinese clones are usually much higher requiring much more voltage.

    I assume that I have a Chinese clone. but is there a way to verify the exact resistance of my drivers?

    #21974
    Profile photo of John
    John
    Participant

    I figured it out. the resistors say r100 on it so it is a 1ohm resistor. 1.2v is 1.5a. I do not think that I really want to go much higher on this stepper driver.

Viewing 2 posts - 1 through 2 (of 2 total)

You must be logged in to reply to this topic.