lab-notes.md

05/29/2020:

Auto-home attempt #1

• Z-axis movement works
• X-axis - moved to the right but not left
• Y-axis - the bed moved back.

Diagnosis: motor wired wrong?

• Motor wires disconnected and assembled.

Auto-home attempt #2

• X-axis no move?
  • Problem was the switch for x-axis was disconnected. Fixed.

Auto-home attempt #3

• Success!

Auto-home attempt #4

• Verified success!

05/30/2020

Bed-leveling Corner of Origin:

• All wheels returned to starting position.
• Attempted leveling leaves the bed not quite reaching the extruder.
  • Discord: Z-limit switch might be too high.
    • Picture took. Discord: lower it a bit.
      • Also suggested: Print out adjustable screw probe
  • Attempting solution to problem:
    • Measure: 3.4, Took picture.
    • Loosen z-limit and lower a little bit.
      • Measure: 3.3, took picture.
      • See next section for success or fail?

Bed-leveling Corner of Origin. Take #2

• Auto-home success! No crashing.

• All wheels returned to starting position.

• Attempted leveling leaves the bed nearly reaching the extruder. Better than last time? Picture took.

• Someone offered to help. Following his instruction.

  • Centered the extruder in the center of the bed.
  • Cut off the z-switch peninsula.
  • Uninstall the z-switch.
  • Have the extruder hit the bed(with paper). Made sure there's a drag on the paper.
  • Reinstall the z-switch, making sure that the extruder bar hit the z-switch.
  • Watch: https://www.youtube.com/watch?v=5eqTmb01cBk
  • Auto-home.
  • Paper leveled x2
  • Raise temperature to 205 nozzle, 60 bed.
  • Acquire bed test gcode.
  • Init TF. card
  • Load bed test.
  • Print. Took picture. Disaster. Mostly too high.

  05/31/2020:

  Printing test & bed leveling calibration, attempt #2. See Bed-leveling effort from yesterday.

  • Auto-home. Calibration with paper, exclusively raising the bed.
  • Test with bed level model.
  • Print. Took picture. Improvement from yesterday. Still isn't laying the lines between square properly.

  Calibration and test #3

  • Repeat the last section.
    • Autohome failed to initialize. Got error: Too far! Took picture.
    • Tried autohome again, this time, it returned to origin. Still outputting the error.
    • Printed. Photo taken. Seems to haven't hit the bed?
    • Thought: The error message was probably from when the clip got in the way of the bed movement.

  Calibration and test #4

  • Got rid of the error by power cycling. Autohome. Calibrated right bottom corner(next to the control panel) only.
  • Print. Photo taken. Right bottom corner look sgood, as did center. Left is OKish. Left bottom and top bottom are rubbish.

  Calibration and test #5

  • Calibrated again. This time left bottom corner.
  • Print. Photo taken. All the square except the top left is near perfect. The line is almost good on the left side. Right side seems perfect.

  Calibration and test #6

  • Calibrate on the top left corner.
  • Print. Photo taken. Everything's basically perfect except the bottom left.

  Calibration and test #7

  • Calibrate the bottom left corner.
  • Aborted print to stop wasting time. Picture taken. Incidentally bit harder to remove the aborted print outline than a full print one.

  Calibration and test #8

  • Calibrate again, this time across all the bed level
  • INCORRECT BULLET POINT BELOW
    • Noticed scratching. Aborted print. Figured out what the musical noise were. The extruder was hitting the bed.
  • Photo: Actually, I am wrong. It's just very faint filament.