C-axis (Coupler) is not homing properly and I cant get it to grab any tool. It dose move when I ask it to but I dont understand why it is not homing properly, Lock and unlock macros are not working too. My Guess is that when homing it, the rotation stop is not in the correct position but i can not figure out why, any help is appreciated. ps: it did work once when I was building the system. I only had one tool setup then.
I Think it was the I2C error from the Duex5 I updated the firmware and it is back alive, so Probably to save your self the headache update the firmware to 2.03 (2019-06-13b2).
I Guess that was not it. I am having weird behavior here. Some times the tool is picked up and dropped just fine, and some times it picks up the tool and then dropping it results in the tool being dragged off the dock and and some times picking up just dose not hold the tool firmly on the changer. My guess is the C axis is not rotating as expected but I cant put my hands on why. Any help or Ideas Ideas are appreciated.
Hi, Have you tuned the dock positions? Is the pin and contacts lubricated? Have you done a manual lock and unlock?
Done all the above the problem is that it is in consistent some time it works and some time it dosent
I checked on the grab bar and when this issue happens it is not horizontal in the unlocked position which I understand is not the correct state it should be horizontal in the unlocked position right?
I re-did all the steps again ran the calibration gcode and test gcode and all was good, after changing the offsets and when runing the calibration gcode it fails to pickup the second tool again, I am going crazy here cant figure this one out. image of the first calibration run
in the homec.g script change M913 C5 ; XY MOTORS TO 5% CURRENT to M913 C40 ; C MOTOR TO 40% CURRENT Have you done any repeatability testing on tool pick up and drop off and watched it as it runs? You can make a g-code script with the following T0 T-1 T0 T-1 T0 T-1 T0 T-1 T0 T-1 T0 T-1 Repeat as much as you want for each tool replacing T0 with T1 etc. Also check the cables that face the electronics panel, make sure they are not hitting the acrylic or moving the tool off of position.
I did run the Tool Changer Test GCODE file a couple of times before running the calibration and it worked with no issues, I will check the cables and report back, and should I go all the way to 40% of the bat, should I instead increase gradually until the issues is resolved if that is the reason. One thing I was thinking about not sure if it may be the reason I used 3 in 1 Machine lubricating oil for the lubrication instead of the one you refer to in the guides. 3 in 1 = Lubricating, Penetrates Rust, and Cleans. at least that is what is writen on the bottle. Thanks for the help I will report back once I check and try the above. Cheers
You know bringing up the current value for the C axis just made me remember the it dose not detect crash on homing it actually takes a while faintly clicking at its limit before going to home position that might be it. I will try that ASAP.
Ok The 40% current did the trick. Fingers crossed it stays this way. I will order some grease for lubrication but for now the 3 in 1 will have to do for now. Thank You Greg your help is appreciated.
Ekk! Please DON'T use 3in1!! Seems to me if you really need to use oil the best is the stuff made for sewing machines, but me, my preference is suspended PTFE aka Superlube.
The HTG stuff looks good. I'd like to see if I can find some. Superlube is not high temp. For sure though 3in1 is not a choice.
That is what I have working for me, try playing around with the current value for the coupler stepper I recall I had to increase it in the homec.g file check thread above for the details.
