Auto bed probing and compensation with G29 Development

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gannon
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Re: Auto bed probing and compensation with G29 Development

Post by gannon » Mon Aug 26, 2013 10:52 am

Thanks for the tips.
As far as the code files, most of the code modifications are in the planner and configuration files. There are a few new files for the vector math that were introduced as well. I'd have to go through my changes to see exactly what is different though.

geneb
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Re: Auto bed probing and compensation with G29 Development

Post by geneb » Fri Sep 13, 2013 8:27 am

1013, is there a reason I can't print the upgrade parts for this out of PLA?

tnx.

g.

1013
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Re: Auto bed probing and compensation with G29 Development

Post by 1013 » Thu Sep 26, 2013 7:21 pm

geneb wrote:1013, is there a reason I can't print the upgrade parts for this out of PLA?

tnx.

g.
I have not tried it. PLA has a lower softening temperature than ABS, but the bed probing parts should not get that hot, so it would likelly work.

geneb
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Re: Auto bed probing and compensation with G29 Development

Post by geneb » Fri Sep 27, 2013 11:01 am

Ok, thanks.

g.

Couby
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Re: Auto bed probing and compensation with G29 Development

Post by Couby » Sat Nov 02, 2013 2:00 am

Hi.
On Matterhackers we are told about an all software bed leveling method.
Is this hardware one still relevant or should I explore this software only solution ?

I ve just printed the x stiffened mods. I wonder if I should print pieces for this retractable probe :oops: .

1013
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Re: Auto bed probing and compensation with G29 Development

Post by 1013 » Sat Nov 02, 2013 8:44 am

Couby wrote:Hi.
On Matterhackers we are told about an all software bed leveling method.
Is this hardware one still relevant or should I explore this software only solution ?

I ve just printed the x stiffened mods. I wonder if I should print pieces for this retractable probe :oops: .

there is no such thing as an "all-software" bed leveling method....there still has to be some physical measuring of the bed done, so you will still need some sort of probe on the machine, for the software to know how much and where to "level" the bed.

What they mean by "all software" is that the variations in Z height that happen as the nozzle moves in X and Y will be handled by the software on the controlling PC...instead of in the firmware of the machine control microprocessor.

whatever controller handles the offsets... you still need some sort of probe on the machine.

Couby
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Joined: Sat Apr 13, 2013 1:27 am

Re: Auto bed probing and compensation with G29 Development

Post by Couby » Sat Nov 02, 2013 10:06 am

Ok, thanks for your answer (and your mods 8-) ) :) .

geneb
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Re: Auto bed probing and compensation with G29 Development

Post by geneb » Mon Nov 04, 2013 10:10 pm

I'm currently uploading a video that shows how to install the auto-level probe on the TAZ.

Here's a few things that you need to know in order to get it working on the firmware end of things.

1. You'll need to change the Z axis micro-steps to 4 in Configuration_adv.h.
Look for the #define of MICROSTEP_MODES and change it like so:
#define MICROSTEP_MODES {16,16,4,16,16}

2. In Configuration.h, you'll need to make sure that you've got the extruder steps set correctly. If you've got a "Factory" built TAZ, the steps per MM for the extruder will be shown on the calibration sheet that came with the printer. For mine, it was 860, so I modified DEFAULT_AXIS_STEPS_PER_UNIT to use that value, as shown:
#define DEFAULT_AXIS_STEPS_PER_UNIT {100.5,100.5,800,860,800}

I'm pretty sure these are the only two "gotchas" in the process.

1013, can you add these notes to your top post?

http://youtu.be/dNqr_FqxrYs

tnx!

g.

1013
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Re: Auto bed probing and compensation with G29 Development

Post by 1013 » Tue Nov 05, 2013 11:22 am

Thanks, geneb.

I added the notes about the firmware and link to your video to the OP

geneb
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Re: Auto bed probing and compensation with G29 Development

Post by geneb » Tue Nov 05, 2013 11:39 am

Thanks!

g.

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