New Ramps1.4 Board wont work - High Pitched SQUEEL when trying to move Axis March 18, 2014 02:09PM |
Registered: 10 years ago Posts: 102 |
Re: New Ramps1.4 Board wont work - High Pitched SQUEEL when trying to move Axis March 18, 2014 03:38PM |
Registered: 10 years ago Posts: 102 |
Re: New Ramps1.4 Board wont work - High Pitched SQUEEL when trying to move Axis March 18, 2014 04:37PM |
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Re: New Ramps1.4 Board wont work - High Pitched SQUEEL when trying to move Axis March 18, 2014 05:05PM |
Registered: 10 years ago Posts: 102 |
Quote
NewPerfection
The direction the pot is pointing doesn't mean much. You really need to measure Vref on each driver. See: [reprap.org]
Also, have you installed all the microstepping jumpers?
Re: New Ramps1.4 Board wont work - High Pitched SQUEEL when trying to move Axis March 18, 2014 05:11PM |
Registered: 10 years ago Posts: 102 |
Quote
NewPerfection
The direction the pot is pointing doesn't mean much. You really need to measure Vref on each driver. See: [reprap.org]
Also, have you installed all the microstepping jumpers?
Re: New Ramps1.4 Board wont work - High Pitched SQUEEL when trying to move Axis March 19, 2014 07:37AM |
Registered: 10 years ago Posts: 53 |
Re: New Ramps1.4 Board wont work - High Pitched SQUEEL when trying to move Axis March 20, 2014 02:28PM |
Registered: 10 years ago Posts: 87 |
Re: New Ramps1.4 Board wont work - High Pitched SQUEEL when trying to move Axis March 20, 2014 03:05PM |
Registered: 10 years ago Posts: 553 |
Quote
jmaeding
the jumpers are critical. You need jumpers on the three pairs of pins below the drivers.
Without that, nothing works in my experience.
Radio shack sells them, though the sales people there never know what they are. Look by the chip sockets area.
You need 12 minimum, 3 for each of 4 drivers.
Re: New Ramps1.4 Board wont work - High Pitched SQUEEL when trying to move Axis March 20, 2014 03:06PM |
Registered: 10 years ago Posts: 553 |
Re: New Ramps1.4 Board wont work - High Pitched SQUEEL when trying to move Axis March 20, 2014 03:14PM |
Registered: 10 years ago Posts: 87 |
Re: New Ramps1.4 Board wont work - High Pitched SQUEEL when trying to move Axis March 20, 2014 06:28PM |
Registered: 10 years ago Posts: 553 |
Quote
jmaeding
note that the jumpers are needed before you do anything.
Typical repetier/marlin...firmwares assume 16x microstepping in the configuration.h file, do not change that as you would not be asking if you were someone who should.
The default speeds and accellerations should be fine.
Please post that config.h file, and mention what firmware you are using and we can recommend anything obvious.
I did the same thing as you, no jumpers at first...same squeeling so I know the issue.
Re: New Ramps1.4 Board wont work - High Pitched SQUEEL when trying to move Axis March 20, 2014 06:39PM |
Registered: 10 years ago Posts: 87 |
Re: New Ramps1.4 Board wont work - High Pitched SQUEEL when trying to move Axis March 21, 2014 10:15AM |
Registered: 10 years ago Posts: 553 |
Quote
jmaeding
well, the current config.h files you get with marlin and repetier are set for 16x.
I totally agree on your comment to check things if you understand what the settings mean.
That DEFAULT_AXIS_STEPS_PER_UNIT is not related to microstepping jumpers though, it just a speed setting.
You need the jumopers to make the microstepping happen in the first place.
Re: New Ramps1.4 Board wont work - High Pitched SQUEEL when trying to move Axis March 21, 2014 12:35PM |
Registered: 10 years ago Posts: 87 |
Re: New Ramps1.4 Board wont work - High Pitched SQUEEL when trying to move Axis March 21, 2014 01:38PM |
Registered: 10 years ago Posts: 553 |
Quote
jmaeding
I guess that is part of the game, making sure the facts you understand reflect reality.
I definitely appreciate your corrections and advice, as you are further along the learning curve than I.
What I was saying was the DEFAULT_AXIS_STEPS_PER_UNIT does not turn microstepping on or off.
Jumpers turn those modes on and off, and oddly, most ramps boards do not come with the jumpers.
Is that understanding incorrect?
From a beginners point of view, I just want to know how to get my machine going, then tweak things.
If you have a typical mega/ramps 1.4, you should add the jumpers and use the default config.h settings except motherboard set to 33.
Also critical is setting the driver trim pots to low.
Another issue is making sure your endstops do not connect ground to VCC if using as normally closed.
Those seem to be the easiest ways to break things if not performed.
Once working, you can tweak speed settings, end stops and so on to get things fully working.
That is easy. The hard part is what default parts and settings to use to just get the thing running and not fry or break anything.
If you have a non-typical ramps 1.4 system, you should read a bit on default firmware settings by the maker of that board.
Its usually just tweaking the motherboard setting though from what I have read.
I spent two weeks reading before powering up anything, so I get the idea of checking assumptions.
It actually boiled down the basics above though in the end.
I would love to hear a better way of handling the thought process for a beginner, we all benefit from your sharing.
Re: New Ramps1.4 Board wont work - High Pitched SQUEEL when trying to move Axis March 21, 2014 01:50PM |
Registered: 10 years ago Posts: 87 |
Re: New Ramps1.4 Board wont work - High Pitched SQUEEL when trying to move Axis March 21, 2014 05:27PM |
Registered: 10 years ago Posts: 102 |
Quote
eci22
Try this one
http://www.nextdayreprap.co.uk/commissioning-reprap-prusa-mendel-build-manual/
You need to select 11.4 "Pololu stepper driver configuration" from the top tabs
Re: New Ramps1.4 Board wont work - High Pitched SQUEEL when trying to move Axis March 21, 2014 05:38PM |
Registered: 10 years ago Posts: 102 |
Quote
jmaeding
the jumpers are critical. You need jumpers on the three pairs of pins below the drivers.
Without that, nothing works in my experience.
Radio shack sells them, though the sales people there never know what they are. Look by the chip sockets area.
You need 12 minimum, 3 for each of 4 drivers.
Re: New Ramps1.4 Board wont work - High Pitched SQUEEL when trying to move Axis March 28, 2014 09:08AM |
Registered: 10 years ago Posts: 53 |