Current status of new Atom3:
Latest firmware loaded OK; Pronterface sees Atom2 OK; connections for stepper motors limit switches checked OK, but I have the following problems:
1. Control panel AutoHome function causes extruder head to move to the top; as soon as it finishes this move the whole machine start vibrating badly. I immediately switch power off when this happens.
2. With extruder in the middle of the build space the Pronterface m119 command shows X, Y, and Z max all Open, but Z min is triggered. If I manually close the Z min switch it shows as Open. (Perhaps this is the way it is supposed to be but it seems backwards)
3. If I click on the Pronterface Y+ 1 icon the extruder moves to the top (dpesn't this show the 3 steppers are OK?) and stops. Then if I try moving in X or Y direction only the Y stepper moves and Pronterface gives the message "endstop hit: Z:148.94". Nothing happens with I try to move in any Z direction.
4. With power on but heat off the 2 side blowing fans do not run, but the front lowing one does, as does the motherboard fan. These fans did run the very first time I turned the Atom2 on, but I may have done something that burned them out trying to fix the problems in my previous posting here. Setting heat = 185 deg. Pronterface shows correct temp and hot end does get to that temp - but side blowing fans do not run.
Bato Wang
2015-04-10 23:57:43
For 2, you need to check if you connect the wrong pin on the micro switch, it should be C(Common) & NO(Normally Open), and the switch is pressed when nozzle does not touch the bed (Stay open). When touch the bed, nozzle moves and micro switch becomes close and it triggered Z Min. the Pins are labelled on the switch as well.
Bato Wang
2015-04-11 00:04:58
For 4. The always on fan always face rear. You probably put it 180 degree reversed. The two side blowers are activated by the slicer when looping and cooling. Or you can turn it on manually on control > Temperature > Fan Speed. Jog dial set it to 255 should bring the blowers to max speed.
Bato Wang
2015-04-11 00:09:48
Another need to check item for 2: You need to check the three top limiter one at a time, starting from the X (the left hand side) and then the Y (the right hand side) and finally Z (the rear one) . When in the middle, M119 should returns all open, and
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Birk Binnard
2015-04-11 00:23:34
Excellent info Bato - thanks. The Fan Speed does control the side blowing fans OK - they start and stop as expected with Fan Speed set to 125 & 0.
I have checked the 3 top limit switches as you describe and each one does show open & closed at the correct time. I will check to see if I have the wires for the extruder limit switch reversed somewhere.
Bato Wang
2015-04-11 00:37:37
For 3, it look like your stepper connectors are plugged into the wrong sockets. (And maybe it related to 1.) in Pronterface, X should move the nozzle left/right, Y for front/back, Z for up/down. you need to check your stepper connectors are in right place.
Birk Binnard
2015-04-11 00:43:36
I have checked the 4 limit switches and found nothing wrong - except Z min is always triggered. The Z min limit switch came pre-wired with 2 yellow wires leading into a plastic connector. This connector fits only one way into the yellow connector on th
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Bato Wang
2015-04-11 00:48:18
No, don't cut the wire and reverse it yet. You need to check the Z-min micro switch carefully, don't cut the wire yet, you need to check with the two yellow wires soldered to which pins on the micro switch, if possible, take a picture and post here for better understanding.
Birk Binnard
2015-04-11 00:53:05
OK. I will have to disassemble the print head to do that - working on that now.
Birk Binnard
2015-04-11 01:28:45
OK - here is a photo of the switch:
Bato Wang
2015-04-11 01:59:31
Hmm... looks fine to me, it is C and NO soldered.....
Birk Binnard
2015-04-11 02:06:42
But the switch works - it just works in the opposite way it is supposed to.
I really don't understand this because I thought microswitches could only be open or closed, meaning they either short the 2 wires together, or they don't. And this should
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Birk Binnard
2015-04-11 02:08:03
I'm going to put the print head back together now. Have you ever heard of "letting the evil spirits out"? Believe it or not, that has worked for me a few times in the past. Maybe I'll get lucky again.
Mark Chen
2015-04-11 02:23:16
Hi,Bric .Please connect your printer with Pronterface,than send M502,and send G28 ,if the problem is still there....I suggest,record a video to show what situation you got, let us to help you to solve those problem you got,thanks
Birk Binnard
2015-04-11 02:25:44
OK - will post results and video as soon as I get things back together.
Mark Chen
2015-04-11 02:29:48
Make sure to upgrade your Marlin again
Mark Chen
2015-04-11 02:30:18
Birk Binnard
2015-04-11 02:38:37
Yes, I did that first thing this morning. Still working on printhead re-assembly. Those sure are small fasteners!
Birk Binnard
2015-04-11 04:39:09
No joy. I used Pronterface to give the 2 commands. First one worked OK; second one did the same thing as the LCD AutoHome: extruder moved to top and Y sterper went crazy. See video for the gruesome details.
OK - Facebook won't upload the video - it's 113.MB. I'll upload it to my Google drive. Here's the link for it:
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陳順得
2015-04-11 04:55:09
it look like your endstop didn't work,
陳順得
2015-04-11 05:05:08
Birk Binnard
2015-04-11 05:29:55
I don't think so - because Pronterface shows each limit switch being tripped when I activate them individually by hand.
Clarence Lee
2015-04-11 07:46:03
Birk Binnard
Could you check each endstops & stepper motors relation?
X axis : left stepper motor [X MAX ]
Y axis: right stepper motor [Y MAX[
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Birk Binnard
2015-04-11 13:10:00
After about 2 1/2 hours online with an Atom tech the following has been established:
1. Each stepper motor, when running individually, works Ok and stops OK at it's top end-stop.
2. The X & Z steppers and the Y & Z steppers function properly together a
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