Need help with Original Rostock Delta July 31, 2015 04:30AM |
Registered: 9 years ago Posts: 65 |
Re: Need help with Original Rostock Delta July 31, 2015 04:45AM |
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Re: Need help with Original Rostock Delta July 31, 2015 04:59AM |
Registered: 9 years ago Posts: 65 |
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dc42
AFAIK Marlin doesn't have the facility to move the tower motors individually on a delta, so you need to home the printer before trying to move any axes. Homing should move the carriages up until they reach the endstops. If the carriages go down instead of up, turn the power off and flip over the stepper motor connectors.
I presume you configured Marlin for a delta before you flashed it to the board?
Re: Need help with Original Rostock Delta July 31, 2015 10:50AM |
Registered: 9 years ago Posts: 65 |
Re: Need help with Original Rostock Delta July 31, 2015 10:59AM |
Registered: 10 years ago Posts: 14,672 |
Quote
TehStranger
Update: I got the axis to home up but now I have another problem which is they continue to move up even when they hit the endstops.
Re: Need help with Original Rostock Delta July 31, 2015 11:08AM |
Registered: 9 years ago Posts: 65 |
Quote
dc42
Quote
TehStranger
Update: I got the axis to home up but now I have another problem which is they continue to move up even when they hit the endstops.
Have you used the M119 command to check that the endstop switches are being read correctly when triggered and when not triggered?
Re: Need help with Original Rostock Delta July 31, 2015 11:46AM |
Registered: 10 years ago Posts: 14,672 |
Re: Need help with Original Rostock Delta July 31, 2015 12:05PM |
Registered: 9 years ago Posts: 65 |
Quote
dc42
On a delta, the only endstops you have are max endstops. So disable the min endstops and enable the max ones. Connect the endstop switches to the max endstop pins on your electronics.
Re: Need help with Original Rostock Delta July 31, 2015 12:13PM |
Registered: 10 years ago Posts: 14,672 |
Re: Need help with Original Rostock Delta July 31, 2015 12:29PM |
Registered: 9 years ago Posts: 65 |
Quote
dc42
On RAMPS/Marlin, the Z probe (if you have one) is normally connected to the Z Min endstop pins. Looks like you have the Z probe code enabled in Marlin. Simplest thing to do is just enable the Z min endstop in the config file - it shouldn't do any harm even if you don't yet have a Z probe.
I've attached the Configuration.h file I used on my Mini Kossel before I upgraded the controller electronics. Some of the values will be wrong for your printer, but it should give you some idea of what should be enabled and disabled.
Re: Need help with Original Rostock Delta July 31, 2015 03:47PM |
Registered: 10 years ago Posts: 14,672 |
Quote
TehStranger
Quote
dc42
On RAMPS/Marlin, the Z probe (if you have one) is normally connected to the Z Min endstop pins. Looks like you have the Z probe code enabled in Marlin. Simplest thing to do is just enable the Z min endstop in the config file - it shouldn't do any harm even if you don't yet have a Z probe.
I've attached the Configuration.h file I used on my Mini Kossel before I upgraded the controller electronics. Some of the values will be wrong for your printer, but it should give you some idea of what should be enabled and disabled.
My apologies - Which line of code are you referring to to enable the Z min endstop?
Re: Need help with Original Rostock Delta July 31, 2015 11:43PM |
Registered: 9 years ago Posts: 65 |
Quote
dc42
Quote
TehStranger
Quote
dc42
On RAMPS/Marlin, the Z probe (if you have one) is normally connected to the Z Min endstop pins. Looks like you have the Z probe code enabled in Marlin. Simplest thing to do is just enable the Z min endstop in the config file - it shouldn't do any harm even if you don't yet have a Z probe.
I've attached the Configuration.h file I used on my Mini Kossel before I upgraded the controller electronics. Some of the values will be wrong for your printer, but it should give you some idea of what should be enabled and disabled.
My apologies - Which line of code are you referring to to enable the Z min endstop?
Good question! I'm not a Marlin expert, and I haven't used Marlin since I upgraded my Mini Kossel to Duet electronics at the end of last year. But I've just looked at Configuration.h, and it looks to me that min endstops can only be disabled as a group - which seems odd to me, since you can have a Cartesian printer with a min endstop switch on one axis and max endstop switch on another. So I suggest you comment out both of the following lines with a leading //, as in the Configuration.h file I attached:
#define DISABLE_MAX_ENDSTOPS
#define DISABLE_MIN_ENDSTOPS
Re: Need help with Original Rostock Delta August 02, 2015 05:32AM |
Registered: 9 years ago Posts: 65 |
Re: Need help with Original Rostock Delta August 02, 2015 06:03AM |
Registered: 10 years ago Posts: 14,672 |
Re: Need help with Original Rostock Delta August 02, 2015 06:10AM |
Registered: 9 years ago Posts: 65 |
Quote
dc42
Before you print, you need to do delta calibration to set at least the homed height, delta radius and homing switch corrections. As you are usnig Marlin, this guide [minow.blogspot.co.at] should help you. Also make sure you have the correct steps/mm set, and x16 microstepping selected on the RAMPS board jumpers.
Re: Need help with Original Rostock Delta August 03, 2015 12:14AM |
Registered: 9 years ago Posts: 65 |
Quote
dc42
Before you print, you need to do delta calibration to set at least the homed height, delta radius and homing switch corrections. As you are usnig Marlin, this guide [minow.blogspot.co.at] should help you. Also make sure you have the correct steps/mm set, and x16 microstepping selected on the RAMPS board jumpers.
Re: Need help with Original Rostock Delta August 03, 2015 02:45AM |
Registered: 10 years ago Posts: 14,672 |
Quote
TehStranger
Quote
dc42
Before you print, you need to do delta calibration to set at least the homed height, delta radius and homing switch corrections. As you are usnig Marlin, this guide [minow.blogspot.co.at] should help you. Also make sure you have the correct steps/mm set, and x16 microstepping selected on the RAMPS board jumpers.
Update: I followed the guide you linked and ran into a problem - when I run the commands, the axis just home and do nothing else. What could the problem be?
Re: Need help with Original Rostock Delta August 03, 2015 03:41AM |
Registered: 9 years ago Posts: 65 |
Quote
dc42
Quote
TehStranger
Quote
dc42
Before you print, you need to do delta calibration to set at least the homed height, delta radius and homing switch corrections. As you are usnig Marlin, this guide [minow.blogspot.co.at] should help you. Also make sure you have the correct steps/mm set, and x16 microstepping selected on the RAMPS board jumpers.
Update: I followed the guide you linked and ran into a problem - when I run the commands, the axis just home and do nothing else. What could the problem be?
Looking at that page, where it says:
g28 g0 f8000 x-77.94 y-45 z0
you need to send 2 separate commands, i.e.
g28
g0 f8000 x-77.94 y-45 z0
and similarly for the others.
Re: Need help with Original Rostock Delta August 03, 2015 06:14AM |
Registered: 10 years ago Posts: 14,672 |
Re: Need help with Original Rostock Delta August 03, 2015 08:44AM |
Registered: 9 years ago Posts: 65 |
Re: Need help with Original Rostock Delta August 03, 2015 09:33AM |
Registered: 10 years ago Posts: 14,672 |
Re: Need help with Original Rostock Delta August 03, 2015 09:44AM |
Registered: 9 years ago Posts: 65 |
Re: Need help with Original Rostock Delta August 03, 2015 10:01AM |
Registered: 9 years ago Posts: 65 |
Quote
dc42
How big is your print bed? Perhaps x=-77.94 y=-45 is off the bed. In which case, work out the XY coordinates put the effector in front of the tower, and use those coordinates instead.
Re: Need help with Original Rostock Delta August 03, 2015 12:03PM |
Registered: 10 years ago Posts: 14,672 |
Quote
TehStranger
Quote
dc42
How big is your print bed? Perhaps x=-77.94 y=-45 is off the bed. In which case, work out the XY coordinates put the effector in front of the tower, and use those coordinates instead.
I used the m114 command at the home position and this is the result: X:0.00 Y:0.00 Z:260.40 E:0.00 Count X: 477.48 Y:477.48 Z:477.48
Shouldn't they all be 0?
Re: Need help with Original Rostock Delta August 03, 2015 01:36PM |
Registered: 9 years ago Posts: 65 |
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dc42
Quote
TehStranger
Quote
dc42
How big is your print bed? Perhaps x=-77.94 y=-45 is off the bed. In which case, work out the XY coordinates put the effector in front of the tower, and use those coordinates instead.
I used the m114 command at the home position and this is the result: X:0.00 Y:0.00 Z:260.40 E:0.00 Count X: 477.48 Y:477.48 Z:477.48
Shouldn't they all be 0?
No, Z should be however high the nozzle is off the bed in the home position. I don't know Marlin well enough t know what the 'Count' figures are, although my guess is that they a\re the carriage heights.
Have you checked that the axes move the correct amount? Home the printer, then in Pronterface press the Z-10 button. The head should move down 10mm. If it moves down a different amount, you need to adjust the steps/mm in your firmware configuration.
Re: Need help with Original Rostock Delta August 03, 2015 02:37PM |
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Re: Need help with Original Rostock Delta August 03, 2015 11:38PM |
Registered: 9 years ago Posts: 65 |
Re: Need help with Original Rostock Delta August 04, 2015 03:20AM |
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Re: Need help with Original Rostock Delta August 04, 2015 03:37AM |
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Re: Need help with Original Rostock Delta August 04, 2015 04:16AM |
Registered: 9 years ago Posts: 445 |
Quote
TehStranger
Quote
dc42
Try reducing the feed rate in that G1 command. 8000 is rather high and may be difficult to achieve if your motor currents are not quite right. So try 3000.
I tried that already, same problem only it goes slower