Need some advice.
Hi!
I'm running: Ramps 1.4 w A4988. Spectra line with Wantai Nema 17 Stepper Motor 42BYGHW811 70oz-in 48mm 2.5A.(Same a Rich used on his from the blog).
Is this normal?
I did some testing. If I do the paper calibration, I bring my nozzle to the bed and I have just enough clearance. I can still move the paper. If I cut the power, I can no longer move the paper, or slip it under the nozzle. the nozzle has dropped.
I did increase the DEFAULT_STEPPER_DEACTIVE_TIME to 400 from 60.
If I G28, then cut power it does drop a tiny bit. Maybe 1mm? The effector will very easily stay in the top position. In fact it still requires some force to manually push the effector down.
I can't measure the difference, but I'd say it is 3-4 times harder to push the end effector up as it is to push it down (without power).
Prior to trying to calibrate this today. My end effector was parked at the top. It did not appear to be slidding down, even after a couple month of no power. So, it's not as iff it is slowly rolling down to the bottom. What is obvious now is that tiny (1mm?) drop at the removal of power.
So, I don't believe it is the firmware, I corrected the timeout
I don't think it is the spectra .
And these are supposed to be good motors. Same motors RichRap used.
Any thoghts?
Thanks
Maxi
And my end effector is pretty light.
Hi!
I'm running: Ramps 1.4 w A4988. Spectra line with Wantai Nema 17 Stepper Motor 42BYGHW811 70oz-in 48mm 2.5A.(Same a Rich used on his from the blog).
Is this normal?
I did some testing. If I do the paper calibration, I bring my nozzle to the bed and I have just enough clearance. I can still move the paper. If I cut the power, I can no longer move the paper, or slip it under the nozzle. the nozzle has dropped.
I did increase the DEFAULT_STEPPER_DEACTIVE_TIME to 400 from 60.
If I G28, then cut power it does drop a tiny bit. Maybe 1mm? The effector will very easily stay in the top position. In fact it still requires some force to manually push the effector down.
I can't measure the difference, but I'd say it is 3-4 times harder to push the end effector up as it is to push it down (without power).
Prior to trying to calibrate this today. My end effector was parked at the top. It did not appear to be slidding down, even after a couple month of no power. So, it's not as iff it is slowly rolling down to the bottom. What is obvious now is that tiny (1mm?) drop at the removal of power.
So, I don't believe it is the firmware, I corrected the timeout
I don't think it is the spectra .
And these are supposed to be good motors. Same motors RichRap used.
Any thoghts?
Thanks
Maxi
And my end effector is pretty light.
