The image produced by autoleveling will show xyz arrows at one of the corners. I take it the arrows are placed at the starting point which would be closest to 0,0.. ? Another way of putting it, the arrows reflect the front left corner of the bed when the mesh was generated.
Posts made by Borgtribble

Silly question on autoleveling bed mesh orientation.

RE: Nozzle probes off bed.
@Turbo Thanks, I'm hoping with the touch mounted on the left I can get most of the bed mapped out. (Since the probe can move more to right of the hotbed)

RE: Nozzle probes off bed.
@Turbo ALL FIXED got it working so I'm all good! I'm using G29 in the bed.g and got the first bed mesh mapped out. Currently my resin printer is making a mount to go on the left side. This will allow me to probe more of the bed :). I learned quite a bit since I botched this probe offset, with the new knowledge I plan on make the best bed mesh I can. Again thanks for all the help everyone, and Turbo you did a lot here so I'm going to name my Printer "Turbo" (Hopefully no more issues from here!)

RE: Nozzle probes off bed.
@Turbo OK my bad, setup calls for a  48 (which going through the many configurations of petsfang I found this >>Right BLT...............................X....+48................Y.....2) which should be positive 48. So by switching the  to a + the machine works with my setup now, just the points are not in a clockwise rotation. (For note I did switch the  to + but I posted here, but at that point I had other issues causing the problems.) SOOOOoooo this is my new offset xy bltouch bedmesh
22548=1772(2 for bedstartpoint)=175/5 =x35
2272=22515(15 for bedstartpoint)=210/5 =y42G31 P25 X+48 Y2
M557 X2:177 Y15:227 S35:42This will give me a 5x5 which I need to map out in a ccw pattern. What changes do I need to make to my bed.g file? I found this on the forum
""1. A sequence of 3, 4 or 5 G30 commands with coordinates. This is the old way of doing it. You are limited to just 5 points, and you can specify trigger height corrections for those points.
 A G29 command to do mesh leveling. You don't get to choose individual points (just the grid) and you can't specify trigger height corrections. But you can have a lot more points.""
If I'm running 25 point check I need to delete out the old G30 command lines and replace it with a G29?

RE: Nozzle probes off bed.
@Turbo The bed pick is perfect if you flip it so the offset volume is on the left when facing it.

RE: Nozzle probes off bed.
@Turbo bed is 220 220 250 , you can go as high as 235 ish on both x and y.

RE: Nozzle probes off bed.
@Turbo Thanks for the help! Ok so I narrowed it down to the x offset. When define the probe X48 then set the mesh for X48:200 it should start at X0 and work across correct. The printer always starts at X48 even with I set X0:200. The only time it will start at X0 is when I have probe offset set to 0 and mesh X0:200.

RE: Nozzle probes off bed.
So I updated the bed.g file and m577 line in config.g but I must be still missing something. The bltouch instead of going to xy of point 1 the hotend moves to the middle of the front (at least y seems right) and starts the auto leveling samples from there. I even moved the starting point in bed.g to the most left of the bed and the nozzle still starts the sampling at around the mid point. For example I have something like G30 P1 X0 Y17 etc but it will not start at here. After Homeall the nozzle parks at the correct spot on the bed that I assigned to it in the g file but will not start at the proper location for the G30 command for bed.g

RE: Nozzle probes off bed.
btw it's defaulting to the bed.g file
M561 ; clear any bed transform
M98 Pdeployprobe.g ; deploy mechanical Z probe
; Probe the bed at 4 points
G30 P0 X50 Y50 H0 Z99999 ;G30 P0 X20 Y20 H0 Z99999
G30 P1 X50 Y185 H0 Z99999 ;G30 P1 X20 Y215 H0 Z99999
G30 P2 X185 Y185 H0 Z99999 ;G30 P2 X215 Y215 H0 Z99999
G30 P3 X185 Y50 H0 Z99999 S ;G30 P3 X215 Y20 H0 Z99999 S
M98 Pretractprobe.g ; retract mechanical Z probeI read somewhere that the machine will not run the m557 file if there's bed.g file present. For note I have the nozzle parking at the very front left corner (facing the machine) after homeall is ran.

RE: Nozzle probes off bed.
So going off your math with a 5x5 sample grid using x 220 and y 222 it would look something like this? btw the z height should be 1.235
x22048 = 172 steps 43
y2222=220 steps 55G31 P25 x48 y 2
M557 x 48:220 y 2:222 s43:551 x:48 y:2
2 x:91 y:2
3 x:134 y:2
4 x:177 y:2
5 x:220 y:2
6 x:220 y:57
7 x:177 y:57
8 x:134 y:57
9 x:91 y:57
10 x:48 y:57
11 x:48 y:112
12 x:91 y:112
13 x:134 y:112
14 x:117 y:112
15 x:220 y:112
16 x:220 y:167
17 x:177 y:167
18 x:134 y:167
19 x:91 y:167
20 x:48 y:167
21 x:48 y:222
22 x:91 y:222
23 x:134 y:222
24 x:177 y:222
25 x:220 y:2221 x:48 y:2 2 x:91 y:2 3 x:134 y:2 4 x:177 y:2 5 x:220 y:2
10 x:48 Y:57 9 x:91 y:57 8 x:134 Y57 7 x:177 y:57 6 X:220 y:57
11 x:48 y:112 12 x:91 y:112 13 x:134 y:112 14 x:177 y:112 15 x:220 y:112
20 x:48 y:167 19 x:91 y:167 18 x:134 y:167 17 x:177 y:167 16 x:220 y:167
21 x:48 y:222 22 x:91 y:222 23 x:134 y:222 24 x:177 y:222 25 x:220 y:222

RE: Nozzle probes off bed.
@Turbo I double checked that. The hotend uses a petsfang with the bltouch mounted to the side. Which is 48 2 zx After doing the process for z I got that measurement. Also double checked by putting a dot down for the nozzle location and jogging the nozzle to the bltouch tip was over it. Here's the line from config.g
G31 P25 X48 Y2 Z1.235 
Nozzle probes off bed.
(Excuse my ignorance I'm still learning) So after I home all the auto level sends to nozzle off the bed for a sample on the third . After testing the sample lines I believe the starting home point conflicts with the bed sampling. For example when running to first two line's the nozzle stays on board but not near the corners , when I send the 3rd line the nozzle moves off the bed. So maybe it's something x positioning of the hotend after home all?
; Probe the bed at 4 points
G30 P0 X50 Y50 H0 Z99999 ;G30 P0 X20 Y20 H0 Z99999
G30 P1 X50 Y185 H0 Z99999 ;G30 P1 X20 Y215 H0 Z99999
G30 P2 X185 Y185 H0 Z99999 ;G30 P2 X215 Y215 H0 Z99999
G30 P3 X185 Y50 H0 Z99999 S ;G30 P3 X215 Y20 H0 Z99999 S 
RE: how do you setup multi probe points?
Thanks for the info however something is off. When I run the G29 S0 the hotend will move right taking samples and continue off the bed. Why is it doing this?

RE: how do you setup multi probe points?
SO after some reading the line ((M557 X50:185 Y50:185 S65 ; Define mesh grid )) The S65 means the machine will sample 65 points from mesh grid?

how do you setup multi probe points?
I'm running Duet 2 1.04 wifi with Bltouch on an ender 3.
So my current bed.g has 4 points setup like so
; Probe the bed at 4 points
G30 P0 X50 Y50 H0 Z99999 ;G30 P0 X20 Y20 H0 Z99999
G30 P1 X50 Y185 H0 Z99999 ;G30 P1 X20 Y215 H0 Z99999
G30 P2 X185 Y185 H0 Z99999 ;G30 P2 X215 Y215 H0 Z99999
G30 P3 X185 Y50 H0 Z99999 S ;G30 P3 X215 Y20 H0 Z99999 S
M98 Pretractprobe.g ; retract mechanical Z probehow would I expand this to 16 points?
Also on a side note the does the bed mesh limits axis limits seem right in the config.g for the ender 3?
; Axis Limits
M208 X5.5 Y10 Z0 S1 ; Set axis minima
M208 X258.5 Y246 Z260 S0 ; Set axis maximaM557 X50:185 Y50:185 S65 ; Define mesh grid