2

I recently finished building my Tevo Tarantula but now I have an issue with homing the X-axis.

I have uploaded MarlinTarantula EasyConfig 2.0.x firmware with Arduino Version 1.8.15 on to the Tevo Tarantula. Whenever I press Home X on the LCD, or by sending the g code command G28 X0, the X carriage moves to activate the end stop, it activates the end stop, then the carriage moves to the right, or away from the end stop, then it moves back and jams in to the end stop.

When I physically press the X end stop and check the state with the G-code command M119 the end does register as 'triggered' so I don't think the end stop is the problem. However after reading some other threads I'm not sure anymore. I will link a video to show how the problem I have just described.

This is the link to the video: https://streamable.com/kbdnwc

Edit: When I do press the X end stop manually with my hand during homing of the X axis, the carriage has very similar behavior. It stops, then it goes to the right, which is away from the X end stop then it comes back to the left and I get the message of "Homing Failed. Please Reset."

doshi
  • 21
  • 2

1 Answers1

1

The first thing that jumps out to me is where the frame is pushing on the switch. It looks to be directly over the switch actuator and not at the end of the little metal switch arm. This will make the gap from switch activation point to hard stop and bottoming out the switch really small. Any software delay after endstop detection or flex in the system may could cause the delicate switch to be used a hard stop.

Speaking of flex in the system is hard to tell for sure but the belts do look slack and not well aligned. The chance is not zero the two issues could combine to create this problem you are seeing

A informative test might be able hold a credit card size of plastic against the frame in front of the sensor so it contacts the end of the metal arm first as it homes.

Kezat
  • 373
  • 2
  • 4