Need some help!!! I have had a mendelmax for about a year, and its been kicking butt. I fried the ramps board, and when I replaced it the new board (made by sainsmart).
For some reason, the motors now put off a terrible vibration at lower speeds. They function just fine in homing, and at faster speeds— but when I try to move them slow they are insanely rattly and loud.
I have spent a ton of time trying to adjust the current. It doesn’t seem to be the issue. However, when I make contact with the POT and a screw driver, the vibration goes away and the machine prints perfectly!
!>!>!>>!??!?!?!
I’m out of my element here, but when you touch part of the board like that, you’re changing how it grounds. Normally these boards don’t LIKE being grounded to the same ground as the rest of the system.
The pot wiper arm may be flaky. The act of touching the pot may be helping it make the connection.
Ubfrotunately it happens with all pots, I’ve tried swapping.
Also, with the new ramps when I connected everything, it was running much faster. I had to divide my steps per unit by 8 to get things to work normal…
Noise only exists in y motor
@Mike_Kowalczyk It sounds like there is something wrong with your microstep settings? I can’t explain the pot though.
@Mike_Miller Uhm, I’ve solved a lot of problems with a ramps setup by grounding / shielding eveything in sight.
Wich usually is considdered good practice in electronics.
Hence the “I’m out of my element” part of
My comment. I DO know there’s a difference between absolute and local ground, though, and things like a 60 hz buzz are a bitch to troubleshoot. This sounds like something isn’t quite “grounded enough”.
@Mike_Miller
Could be, but I’m leaning more to microstepping / acceleration settings / jerk.
Thanks guys! It was because the jumpers were not installed on the new ramps board. Never even realize they were there in the first place.
ALL SET. Don’t know what I would do without you guys!