Okay, that helped but it’s not 100% yet.
This time it worked properly until it had to do a z movement for the first holding tab. It lifted for the tab, but it didn’t plunge all the way back down, then it proceeded as if Z0 was higher up than I set it. When it lifted for the subsequent holding tabs, it lifted a couple mm higher than necessary and then plunged about half a mm into the material, instead of plunging 2.5mm like it was supposed to.
It seemed like it skipped steps, but there was no noise or anything like I’ve seen with skipped steps in the past.
- Did you buy everything from here?
No, I had most of it already.
a)If you didn’t or changed some things please don’t leave out any details and include what firmware you flashed.
I flashed the RC7 firmware from the vicious1 website onto an official Arduino CC Mega 2560 with a Sainsmart Ramps 1.4 board and Pololu DRV8825 drivers (I’ve already tried swapping the Z driver for a spare).
My Z stepper motor is an Aleph Objects/Lulzbot Nema 17 with the following specs:
Step angle: 1.8°
Holding torque: 55 N.cm
Rated voltage: 2.8V
Resistance per phase: 2.8,±10%
Inductance per phase: 4.8,±20%
Operation temp range: -20°C ~ +50°C
- Are you using end stops?
a)If so please disconnect them.
- Mac or PC?
CNC_Test_BoxSide_012017_02.txt (18 KB)