Now that my is alive, I have a few questions: 1) Octoprint - pause,

3D Printing
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Now that my #frankenbot is alive, I have a few questions:

  1. Octoprint - pause, move head, resume. Unlike RepetierHost, if I pause a print via Octoprint to say change filament, the printer doesn’t go back to where it left off after pausing. I had a small job running, paused, raised the head 10mm to make an adjustment, resumed and the printer kept printing 10mm up in the air! Is there a way to have Octoprint go back to where the head was after pausing?

  2. I think this might be a @Printrbot firmware issue: The excessive need to rehome the X/Y axis. I’ll home it, then manually jog around the table and rehome the Z axis (manually leveling the bed). But it seems after a certain amount of either time or moves, the Z home won’t run - the error message says I need to home X/Y first. But I did already.

  3. Finally (for now), the Z is 2 steppers wired in parallel. They are not staying in sync with each other. I have two issues - one is mechanical binding that I’ll work out. The other seems to be that after a few minutes the board stops powering the steppers and they fall from a microstep to the nearest full step and it seems they don’t fall the same way. So, how to keep the steppers powered all the time?

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  1. Been there suffered that. Haven’t found a solid fix yet. Might wanna hit up the octoprint community for that one.

  2. happens to me as well. Pretty sure it’s a firmware issue like you said. I don’t believe Marlin is the only firmware that likes the x and y homed before z.

  3. Are you saying the driver shuts off the drivers during a print? If so you most likely have the current too high and they are going into thermal shutdown mode.

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More like a timeout issue. I seem to recall reading that the firmware or driver reduces the current after some time if no steps are sent. Power saving and all that. It’s why layer heights are calculated to be integral number of steps so you aren’t sitting at a micro step during a long layer and power down.

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  1. there is a option in marlin to force xy home before z