Auto_Bed_Leveling: Enhanced G29 command

[DarkAlchemist]

So, flash it then move the nozzle in pronterface followed by a g28 then g29 if it moved?

Everything moved and g28 and g29 worked but now what?

btw, g29 no longer works with T it just didn't print me out anything and I have not looked at the code to see why yet.

[Roxy]

So, flash it then move the nozzle in pronterface followed by a g28 then g29 if it moved?

Everything moved and g28 and g29 worked but now what?

It would be interesting to do a G29 n 4 T and see how well the bed is leveled physically.... But then try to lay down the first layer of a print. Adjust the Z_PROBE_OFFSET_FROM_EXTRUDER number to get it in the right position.

[DarkAlchemist]

We cross posted but T doesn't do anything in this.

if ( code_seen('T') || code_seen('t'))
topo_flag++;

So it is in Marlin_Main.cpp but T did nothing.

[Roxy]

We cross posted but T doesn't do anything in this.

Where is your origin? Is it in the front left? Is it in the back right? Here is the section out of Bdac's Configuration.h file that controls that:

    // set the max number of grid points per dimension
    // The G29 command defaults to 3 if nothing is specified.  But setting the number of probed 
    // points higher is very useful when getting a Bed Topology Report  (G29 n 5 T)
    #define AUTO_BED_LEVELING_GRID_POINTS 5

    // Uncomment one of the following four lines so the Bed Topology Report can produce a map
    // that relates accurately to your bed orientation.  

    #define ORIGIN_FRONT_LEFT
    //#define ORIGIN_BACK_LEFT
    //#define ORIGIN_FRONT_RIGHT
    //#define ORIGIN_BACK_RIGHT

You need to turn on the option that matches what you have going on with your print bed.

[DarkAlchemist]

My origin is Front_Left

I think I see what is going on as
#define ORIGIN_FRONT_LEFT is not in my config.h as it was in Marlin_Main.cpp and in this fork it was moved into Config.h

[Roxy]

My origin is Front_Left

Once you paste that block of code in... (and compile and flash) What happens when you do a G29 n 4 T ? Please Cut & Paste the Bed Level Topology Report into the next post.... (We don't really need it to get the bed leveling going... But like I said, it will be interesting to see how level the bed is and what we are dealing with.)

[DarkAlchemist]

Bed Height Topography:
+1.96508 +0.84258 --0.30717 --1.42092
+1.70208 +0.63208 --0.45317 --1.51992
+1.43983 +0.44183 --0.60442 --1.62617
+1.20008 +0.22183 --0.77567 --1.73792

[Roxy]

Wow! No wonder you want Auto Bed Leveling! You will get better results on your prints if you get all those numbers pushed towards zero. Can you put down a first layer of a print? What happens when you try?

[DarkAlchemist]

- means I need to pull the bed up and + means I need to push it down?

[Roxy]

- means I need to pull the bed up and + means I need to push it down?

Correct. + means the bed is too high (compared to the mean of points).