G29 Auto-leveling

fotomickey
Posts: 24
Joined: Wed Jul 08, 2015 2:24 am
Location: Canada

G29 Auto-leveling

Post by fotomickey » Thu Jul 23, 2015 3:41 pm

Hi all Experts

I'm trying to calibrate my G2S , but have 2 more challenge ahead to make it work.
1) Manage to get 2 probing points (0,50)、(43.3,-25) but (-43.3,-25) seem off by 2mm+ the end-stop screw & belt checked already at maximum setting. Adjust Delta radius didn't help.

2) Try to test auto-leveling G28 then G29. Will touch center point ok, but then arm will raise and waving in mid-air for couple test point without touching plate. After Auto-leveling , G2s lost it coordination and can not find center point with G1X0 Y0 and can't lower to 0,0,0 unless do a G28 to reset home.

Will someone able to provide some help or uploading a video explain the calibration & Auto-leveling of G2 & G2S.

Thanks in advance

Sherry
Posts: 362
Joined: Wed Jul 01, 2015 12:52 pm

Re: G29 Auto-leveling

Post by Sherry » Tue Jul 28, 2015 3:28 pm

fotomickey wrote:Hi all Experts

I'm trying to calibrate my G2S , but have 2 more challenge ahead to make it work.
1) Manage to get 2 probing points (0,50)、(43.3,-25) but (-43.3,-25) seem off by 2mm+ the end-stop screw & belt checked already at maximum setting. Adjust Delta radius didn't help.

2) Try to test auto-leveling G28 then G29. Will touch center point ok, but then arm will raise and waving in mid-air for couple test point without touching plate. After Auto-leveling , G2s lost it coordination and can not find center point with G1X0 Y0 and can't lower to 0,0,0 unless do a G28 to reset home.

Will someone able to provide some help or uploading a video explain the calibration & Auto-leveling of G2 & G2S.

Thanks in advance
regarding to leveling,please refer to the following link.this is more clear guidance for leveling.
http://www.geeetech.com/wiki/index.php/ ... _preparing

sagat
Posts: 6
Joined: Sun Jul 26, 2015 2:41 pm
Location: Czech Republic

Re: G29 Auto-leveling

Post by sagat » Wed Jul 29, 2015 4:03 am

Hi, I changed in firmware desired values as is described in manual from you. I make home position without issue, but when I send command G29 for autocalibrating, then x and y belt from home position go down faster than z position and probe trying go out printable. Please help me somebody.

Sherry
Posts: 362
Joined: Wed Jul 01, 2015 12:52 pm

Re: G29 Auto-leveling

Post by Sherry » Wed Jul 29, 2015 2:11 pm

sagat wrote:Hi, I changed in firmware desired values as is described in manual from you. I make home position without issue, but when I send command G29 for autocalibrating, then x and y belt from home position go down faster than z position and probe trying go out printable. Please help me somebody.
hi,when calibrating,did you put down the probe?

sagat
Posts: 6
Joined: Sun Jul 26, 2015 2:41 pm
Location: Czech Republic

Re: G29 Auto-leveling

Post by sagat » Wed Jul 29, 2015 7:58 pm

Hi Eric, yes I did.

bkbot
Posts: 7
Joined: Wed Jul 29, 2015 2:11 am

Re: G29 Auto-leveling

Post by bkbot » Thu Jul 30, 2015 10:31 am

I have the same problem as Sagat.

When I send the G29 command the head tries to move outside the printable area. This is what's in the log:
22:22:33.723 : N716 G29 *50
22:22:41.759 : Bed x: 41.50 y: -41.50 z: 99.99
22:22:42.286 : Bed x: 13.83 y: -41.50 z: 109.98
22:22:42.846 : Bed x: -13.83 y: -41.50 z: 119.96
22:22:43.469 : Bed x: -41.50 y: -41.50 z: 129.95
22:22:44.028 : Bed x: -41.50 y: -13.83 z: 139.94
22:22:44.668 : Bed x: -13.83 y: -13.83 z: 149.93
22:22:45.211 : Bed x: 13.83 y: -13.83 z: 159.91
22:22:45.739 : Bed x: 41.50 y: -13.83 z: 169.90
22:22:46.282 : Bed x: 41.50 y: 13.83 z: 179.89
22:22:46.810 : Bed x: 13.83 y: 13.83 z: 189.88
22:22:47.385 : Bed x: -13.83 y: 13.83 z: 199.86
22:22:48.057 : Bed x: -41.50 y: 13.83 z: 209.85
22:22:48.792 : Bed x: -41.50 y: 41.50 z: 219.84
22:22:49.639 : Bed x: -13.83 y: 41.50 z: 229.83
22:22:50.231 : Bed x: 13.83 y: 41.50 z: 239.81
22:22:50.806 : Bed x: 41.50 y: 41.50 z: 249.80
22:22:50.806 : 128.75 118.76 108.78 98.79
22:22:50.827 : 138.74 148.73 158.71 168.70
22:22:50.827 : 208.65 198.66 188.68 178.69
22:22:50.827 : 218.64 228.63 238.61 248.60

I'm surprised to see Z values that are greater than 200 when I have MANUAL_Z_HOME_POS 187 set in firmware.

Sherry
Posts: 362
Joined: Wed Jul 01, 2015 12:52 pm

Re: G29 Auto-leveling

Post by Sherry » Thu Jul 30, 2015 3:34 pm

hi,did you select home z as max.
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bkbot
Posts: 7
Joined: Wed Jul 29, 2015 2:11 am

Re: G29 Auto-leveling

Post by bkbot » Tue Aug 04, 2015 11:40 am

Hi, yes, i have home Z set to max.

When I run G29, the Z axis stops and the head tries to go outside the boundaries.
It seems like the firmware calculations are wrong.

Please send the latest firmware.
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Sherry
Posts: 362
Joined: Wed Jul 01, 2015 12:52 pm

Re: G29 Auto-leveling

Post by Sherry » Tue Aug 04, 2015 11:49 am

bkbot wrote:Hi, yes, i have home Z set to max.

When I run G29, the Z axis stops and the head tries to go outside the boundaries.
It seems like the firmware calculations are wrong.

Please send the latest firmware.
hi,i'v sent it to your mailbox.

moriartynz
Posts: 20
Joined: Sun Jul 26, 2015 11:58 am

Re: G29 Auto-leveling

Post by moriartynz » Mon Aug 10, 2015 8:05 pm

My issue is different. When I do a G29, the device correctly probes the full array of points. Once all probe points have been sampled, it then seems to completely mis-calibrate the positions and tries to destroy the carriages by moving outside of the printable area in mid-air requiring an emergency stop. Before issuing the G29 command, I can get the device to move around the bed fine with G0 commands. This is almost certainly a firmware issue that seems to have its origins in the way the auto-levelling calibrates points once it has the auto-levelling matrix. Auto-levelling is required as I do get a variance of up to 3mm in Z axis during probing.

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