Help: X axis skip/jumps Okay so got my Darwin built and every thing seem to be working fine. After I get the extruder running I start printing. Now it seem like it is printing fine except randomly the x axis seems to stall or jump forward 1-2 mm. An example is that printing the 10mm cube when it is printing the boarder it misses and never get back to its starting point. Other times it can print the board fine and makes a nice square. Then when it start the in fill it skips /jumps /stall i am not sure what to call it and then start printing out side of the boarder. sometimes making a parallelogram rather than a square. Things i have tried. -Tighten belt -losening belt -slowing down the xy speed -tightening the drive pully I have tried to watch where the problem is coming from but. Because it happens randomly i can never pinpoint the problem.If you have any ideas I am open to suggestions. https://reprap.org/forum/read.php?14,16022,16022#msg-16022 Sun, 07 Jun 2026 04:28:27 -0400 Phorum 5.2.23 https://reprap.org/forum/read.php?14,16022,16143#msg-16143 Re: Help: X axis skip/jumps https://reprap.org/forum/read.php?14,16022,16143#msg-16143 www.vimeo.com].

Edit: I also just got some temp reading from a IR Thermometer. It topped out somewhere around 130C - 135C. Which is pretty high. I got curious so i looked up the specs on mouser for the chip. "Maximum Operating Temperature: 130C" So definatly found a problem.]]> ronanwarrior Mechanics Mon, 25 Aug 2008 22:17:11 -0400 https://reprap.org/forum/read.php?14,16022,16110#msg-16110 Re: Help: X axis skip/jumps https://reprap.org/forum/read.php?14,16022,16110#msg-16110
Demented]]> Demented Chihuahua Mechanics Mon, 25 Aug 2008 07:09:04 -0400 https://reprap.org/forum/read.php?14,16022,16103#msg-16103 Re: Help: X axis skip/jumps https://reprap.org/forum/read.php?14,16022,16103#msg-16103
I am going to go to frys and pic up som thermal paste and see if i can get/make some larger heatsinks. That or get some small fans to attach to each board. If you have any other ideas why the board are overheating do tell.]]> ronanwarrior Mechanics Mon, 25 Aug 2008 04:45:52 -0400 https://reprap.org/forum/read.php?14,16022,16045#msg-16045 Re: Help: X axis skip/jumps https://reprap.org/forum/read.php?14,16022,16045#msg-16045
Quote

...caching the printed object in the reprap electronics, so that there is no need for reprap-pc communication

But not actually fixing the source of the problem ;)

Comms errors coinciding with motion problems seems like a bit of a smoking gun to me. You'd be best off waiting for someone who actually knows a little more about electronics (or the host software) to take an interest, but I wouldn't be surprised if you were getting interference on a comms line somewhere]]> Ru Mechanics Sat, 23 Aug 2008 16:00:53 -0400 https://reprap.org/forum/read.php?14,16022,16042#msg-16042 Re: Help: X axis skip/jumps https://reprap.org/forum/read.php?14,16022,16042#msg-16042 ronanwarrior Mechanics Sat, 23 Aug 2008 14:49:12 -0400 https://reprap.org/forum/read.php?14,16022,16033#msg-16033 Re: Help: X axis skip/jumps https://reprap.org/forum/read.php?14,16022,16033#msg-16033 (disable automated system idle after xx minutes)

If you're still getting errors, ask Forrest to help with caching the printed object in the reprap electronics, so that there is no need for reprap-pc communication whilst printing

'sid]]> sid Mechanics Sat, 23 Aug 2008 06:05:23 -0400 https://reprap.org/forum/read.php?14,16022,16032#msg-16032 Re: Help: X axis skip/jumps https://reprap.org/forum/read.php?14,16022,16032#msg-16032
zmax: 1.0
zmax: 20.0
sendMessage error - retrying
sendMessage error - retrying
zmax: 1.0
zmax: 20.0
sendMessage error - retrying
sendMessage error - retrying
sendMessage error - retrying
sendMessage error - retrying

except sometimes there is more or less sendmessage lines.

This would also explain why I could never see a mechanical problem and why it is so random.]]> ronanwarrior Mechanics Sat, 23 Aug 2008 05:02:11 -0400 https://reprap.org/forum/read.php?14,16022,16031#msg-16031 Re: Help: X axis skip/jumps https://reprap.org/forum/read.php?14,16022,16031#msg-16031 If so, loose the belt (to not turn the motor for now) and check if the bushings run smoothly over the rods, use as little force as possible to move the carriage by hand (use your little finger of the "bad" hand) just push where the belt is fixed.
You may feel if there's something wrong.
The rods may be bend a little or not perfectly round, or they simply need some lubrification.

It may be the y-Axis that's causing the error.
Check the y-drive pulleys first.
Maybe they are not glued properly and slip on the rod.
Else repeat moving the y-Axis manually (without the motor attached).
grease if necessary.

If no mechanical error is found,
reduce the motoropwer via trimpot to the minimum and increase the power on all all motors synchronously until desired result.

I cannot imagine anything else, but I may be wrong

'sid]]> sid Mechanics Sat, 23 Aug 2008 04:45:06 -0400 https://reprap.org/forum/read.php?14,16022,16028#msg-16028 Re: Help: X axis skip/jumps https://reprap.org/forum/read.php?14,16022,16028#msg-16028 ronanwarrior Mechanics Sat, 23 Aug 2008 02:24:41 -0400 https://reprap.org/forum/read.php?14,16022,16024#msg-16024 Re: Help: X axis skip/jumps https://reprap.org/forum/read.php?14,16022,16024#msg-16024 ronanwarrior Mechanics Fri, 22 Aug 2008 23:18:35 -0400 https://reprap.org/forum/read.php?14,16022,16022#msg-16022 Help: X axis skip/jumps https://reprap.org/forum/read.php?14,16022,16022#msg-16022
Things i have tried.
-Tighten belt
-losening belt
-slowing down the xy speed
-tightening the drive pully

I have tried to watch where the problem is coming from but. Because it happens randomly i can never pinpoint the problem.If you have any ideas I am open to suggestions.]]> ronanwarrior Mechanics Fri, 22 Aug 2008 22:19:45 -0400