New Home › Forum › don’t use this one, I need to sort and delete -Troubleshooting › Ramps/Mega movement issues
- May 25, 2016 at 5:10 am #12811
So I got my mega flashed with the no lcd and 5/16 rod firmware last night (B16_32-LCD-112515).
I connected up my drivers and steppers. I can only get movement when I click on the home buttons. Nothing when I try to move them on the control screen. The server seems to think they have moved as the position indicator has moved on screen.
Power wise I only connected the outside set of positive and negative. Do both sets need to be connected? As far as I know the other set is for powering a hotend and bed which I do not have connected.
I have no end stops connected at the moment. Drivers are 8825 plugged in correctly with the pot facing the power plug.
Anyone know what is going on here?May 25, 2016 at 7:42 am #12818
It is behaving like you have endstops plugged in. Either you changed my firmware or you have something plugged in to an end stop port.May 25, 2016 at 7:50 am #12819
Nope. Just straight uploaded the firmware and only drivers and motors plugged in.May 25, 2016 at 7:55 am #12820
Check your ramps shield then sounds like you might have a short, or a bad board.
Inspect the board around and under the end stop pins. This happens, I have to test every axis on every single board I sell, usually sloppy solder is causing a short or your board is bad.May 25, 2016 at 7:58 am #12821
Ugh… Probably right. Cheap Chinese crap. Will inspect tonight.May 25, 2016 at 10:42 am #12827
Would it make any difference if I added that U8Glib… I was having issues uploading at first and so I added that library. But I see for this version of the firmware I do not need it.May 25, 2016 at 10:57 am #12833
No, the firmware doesn’t call it so it won’t get compiled in.
You can always try bending the endstop pins so they don’t plug into the arduino. The traces are easy to follow on the bottom of the shield.May 25, 2016 at 11:00 am #12834
If I am not mistaken there is a command I can run that would check the status of the end stops… That should tell me if there are shorting no?May 25, 2016 at 11:07 am #12835
Sure, I’m not sure what it is though.May 25, 2016 at 11:08 am #12836
Just found it… M119May 25, 2016 at 5:52 pm #12887
All min and max endstops show open for x y and z
was getting a checksum error as well but i think that is because I dont have an sd card reader
would the mintemp error cause this?
1 pin is loose. The single pin just above all the end stop pins. Its label 12c on my ramps what does that one do?May 25, 2016 at 6:21 pm #12889
Yes, you didn’t put the resistor on?May 25, 2016 at 7:17 pm #12892
… son of a bitch. I figured for just movement the temp wouldnt matter. Good thing I have 3 or 4 spare thermistors kicking around. I will try that tomorrow.
Any idea what that loose pin does?May 26, 2016 at 10:16 am #12921
removed… would not have worked.May 26, 2016 at 3:02 pm #12941
SUCCESS… I can move them! Printing of the new center has started… Hopefully about a week and I can get this thing dirty!
Thanks for your help RyanMay 26, 2016 at 3:04 pm #12942
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