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Printing issues ...
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an update for anyone watching this.
apparently the tmc2100 drivers have pads underneath that need to be bridged in certain conditions.
so, here is where I am at.
removed unneeded pins.
bridged pad to enable bridging wire from cfg1 to gnd.
after doing this, motor whines.
attempted to bridge cfg4 and cfg5 to remove squeal..
Could not get solder to stick to pads. even with scraping and using need
by
glenby
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Printing
further testing.
removed 5 pins (cg1,2 etc) and attempted print.
Removed 3 jumpers from main board.
got thermal runaway probably on the driver.
put 3 jumpers back, no run away.
still got same issue.
to get close, I have to up the voltage to 1a which makes motors hot and stepper drivers need cooling.
I am getting to the point of ditching the tmc drivers as a costly learning experience and get
by
glenby
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Printing
further testing.
1) jumper from cg1 to ground installed for spread cycle.
note: remove all 3 jumpers from board when doing this else it wont work and could kill usb somehow (I got warning from usb on over drawn current).
set voltages from .5v to .9v still get shifting on travel.
Still getting shift on travel.
2) set max x/y speed to 500mm/min to slow everything down.
Still g
by
glenby
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Printing
Quotethe_digital_dentist
How fast are you trying to make it travel? Maybe the motor is running out of torque at that speed.
slower than before.
I have tested from 10mm/s to 80mm/s = speed is not a factor nor is acceleration (that I can see)
I can print at 80mm/s so long as no travel. sharp corners, round corners are no problem.
by
glenby
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Printing
Quoteo_lampe
Did you modify your TMC2100 drivers in any way? AFAIK, they are in silent mode from the start and require to be modified to run in stealth-chop mode to be useful for 3D-printers.
There is a longer thread about TMC2100 mods in the general section.
no mods as yet.
methinks they are in silent mode but people say they should just slot straight in - being a noob at this, I thought I woul
by
glenby
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Printing
Quoteobewan
Sounds like possible interference on the endstop wires from the motor wires.
Make sure wires frome each endstop are twisted, and also each motor wires are twisted.
Try to route enstop wires away from motor wires.
In firmware, there will likely be an option to 'only check endstops when homing', this will elliminate any crosstalk.
I will check this out. the only check when homing is po
by
glenby
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Printing
Quotethe_digital_dentist
Have you checked for loose drive pulleys? Loose belts ? Binding of the mechanism in whichever axis is shifting?
What are the acceleration and jerk settings? How fast are you trying to print? What's the travel speed?
I can't think of any reason for the endstops to have any influence on this behavior.
yes I have checked physical again. it was working good before chan
by
glenby
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Printing
HI,
I have an anet that works reasonably good with the stock board.
if I use octoprint the print ramdomly goes haywire (most recently, moving z axis instead of x axis causing hot end to punch through print).
so I decided to change the board to mks gen 1.4 with tmc2100 steppers.
no changes to motors, geometry, head etc were made. just the board and the drivers.
main issue:
everything moves prope
by
glenby
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Printing