Calibration Not going so well

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This topic contains 8 replies, has 3 voices, and was last updated by  Jason Carr 5 months, 1 week ago.

Viewing 9 posts - 1 through 9 (of 9 total)
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  • #31179

    Jason Carr
    Participant

    I recently just put together my MPCNC and have had a couple frustrating days. So I Thought I would turn to the Forums.

    I have downloaded all the RC7 files and uploaded into the ramps 1.4. when I was checking my movement everything is double what it should be. It is moving in the right direction. That is a plus. but when I say to move 10mm from Repetier Host it actually moves 20mm. I have the 16 tooth pulleys and same everything from the website.

    So during troubleshooting I changes my steps/mm in the Firmware and to my surprise it didn’t change the outcome of the results. Very odd. All the jumpers are in the position they are supposed to be in. I am not getting any better results.

    Looking for somethings to try?
    Jason

    #31184

    Ricardo Almeida
    Participant

    If you changed the values and it did not change the outcome, it probably means that something did not work well during the upload process to the Arduino board. Did you get any error from the arduino IDE during upload?

    What you describe would also mean that you are operating at 1/16 stepping. Are you using DRV8825 drivers? Because if you are using A4988 they will operate at a maximum of 1/16 and not 1/32.

    #31186

    Jason Carr
    Participant

    You are exactly correct. I am running the A4988. So what would I need to do to make it work?

    #31189

    Ricardo Almeida
    Participant

    You have to do the correct changes in the firmware. The steps per mm for all axis have to be divided in half. Then upload it to the arduino board. Double checking if the process is indeed completed successfully.

    #31192

    Jason Carr
    Participant

    So yes, I did that and made sure it all went to the board. No errors not nothing. Then when I went to move it again and same thing. Its like my board is not taking the changes

    So just recently i went to the LCD and the steps/mm on the LCD still say 200. Why wouldn’t those change if it changes in the firmware.

    #31193

    Ryan
    Keymaster

    Does the bottom of the arduino screen say uploaded successfully?

    #31195

    Jason Carr
    Participant

    Yes it does say uploaded. But LCD still shows the steps/mm the same as the original firmware.

    #31197

    Ryan
    Keymaster

    Hmmm, that is a new one. No errors or anything? It should upload and reset.

    Are you sure you aren’t just hitting verify/compile instead of upload?

    Maybe try a different version of the arduino software if you can’t find a missed setting or something in there.

    #31199

    Jason Carr
    Participant

    So I ran the steps/mm to 100 from the LCD and it is perfect. I uploaded one more time and it says done uploading. I am baffled. I do know one thing this machine is going to be awesome.

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