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Z Axis steps per mm: 80?

PixelPusherPixelPusher
in Questions & Answers
Hey,
my new RepRap is up and running (more or less), I'm able to print (well, hot plastic is being spewed around my bed but it's a start!), problem is my Z axis moves very slowly. When I manually adjust or when it's printing it's extremely slow. In fact, I measured and it moves 1/10th of distance it's supposed to. More over, in RH I'll hit "move 10 mm" button and it takes about 7 seconds to move 1 mm.

Replaced stepper driver, same problem.
Switched Z and X motors (to rule out motor malfunction), same problem.

Send an M205 and got this:
17:47:47.448 : EPR:3 3 80.0000 X-axis steps per mm
17:47:47.452 : EPR:3 7 80.0000 Y-axis steps per mm
17:47:47.456 : EPR:3 11 80.0000 Z-axis steps per mm
17:47:47.460 : EPR:3 15 200.000 X-axis max. feedrate [mm/s]
17:47:47.460 : EPR:3 19 200.000 Y-axis max. feedrate [mm/s]
17:47:47.464 : EPR:3 23 2.000 Z-axis max. feedrate [mm/s]

Although changing those parameters doesn't seem to affect Z axis speed at all.
Thanks in advance for any help.
- Richi

Comments

  • RepetierRepetier
    I guess you have a spindle for z? Then 80 steps per mm is much too low. For M8 spindle and 16 substeps you normally need 2560 steps per mm. You need to change that in eeprom.
  • PixelPusherPixelPusher
    Ah! EEPROM. I don't know what eeprom is for, so I disabled it. THAT was my problem. I was changing settings to firmware but eeprom was taking precedence. 
    This is probably why I could never get my x and y axis and endstops to behave correctly.

    I will research eeprom, find out what it is and do i need to use it.

    Thank you!
    - Richi
  • RepetierRepetier
    Endstops are not set by eeprom. These only come from configuration.h.

    Try M119 to test endstop status. L if not hit. There are only 4 combination possible with pullup and inverting if it is not clear which one work.
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