I'm in dire need of trying to fix my Geeetech i3 Pro so many attempts to fix it.
After connecting all these pins correctly I uploaded the Marlin firmware with the correct configs. I will attach the Marlin files and pictures of my ATmega2560 based printer board and some of the errors I'm getting when I run the code.
First, when I press auto home the printer came to somewhat middle of the bed and homed correctly. The only issue was getting the Z-axis correct. So, I connected the printer to Pronterface and began trying to fix the Z-axis. When I try to move the gantry down using the manual controls it won't go below zero. I then found that every time I try to adjust the Z-axis offset using Pronterface it gives me this error
echo:Z Offset z_min: -15 z_max: -5
Input / output from Pronterface console:
>>> m851 SENDING:M851 echo:Z Offset : -0.78 >>> m851 z0 SENDING:M851 Z0 echo:Z Offsetz_min: -15z_max: -5
... then nothing happens, even when I try to turn off the endstops:
>>> M211 S0 SENDING:M211 S0 >>> M211 S0 SENDING:M211 S0 >>> M211 S0 SENDING:M211 S0
While I was trying to see what was going on with this I must have changed or done something, now when I hit auto home the X and Y axis goes to the endstops and starts grinding the gears then the Z comes down all the way at the end of the table around 200,200. I have attached a video of this just to show what is going on.
This is some of my Configuration.h data:
// ENDSTOP SETTINGS: // Sets direction of endstops when homing; 1=MAX, -1=MIN #define X_HOME_DIR -1 #define Y_HOME_DIR -1 #define Z_HOME_DIR -1 #define min_software_endstops true // If true, axis won't move to coordinates less than HOME_POS. #define max_software_endstops true // If true, axis won't move to coordinates greater than the defined lengths below. // Travel limits after homing #define X_MAX_POS 200 #define X_MIN_POS 0 #define Y_MAX_POS 200 #define Y_MIN_POS 0 #define Z_MAX_POS 180 #define Z_MIN_POS 0 #define X_MAX_LENGTH (X_MAX_POS - X_MIN_POS) #define Y_MAX_LENGTH (Y_MAX_POS - Y_MIN_POS) #define Z_MAX_LENGTH (Z_MAX_POS - Z_MIN_POS) //============================= Bed Auto Leveling =========================== #define ENABLE_AUTO_BED_LEVELING // Delete the comment to enable (remove // at the start of the line) #define Z_PROBE_REPEATABILITY_TEST // If not commented out, Z-Probe Repeatability test will be included if Auto Bed Leveling is Enabled. #ifdef ENABLE_AUTO_BED_LEVELING // There are 2 different ways to pick the X and Y locations to probe: // - "grid" mode // Probe every point in a rectangular grid // You must specify the rectangle, and the density of sample points // This mode is preferred because there are more measurements. // It used to be called ACCURATE_BED_LEVELING but "grid" is more descriptive // - "3-point" mode // Probe 3 arbitrary points on the bed (that aren't colinear) // You must specify the X & Y coordinates of all 3 points #define AUTO_BED_LEVELING_GRID // with AUTO_BED_LEVELING_GRID, the bed is sampled in a // AUTO_BED_LEVELING_GRID_POINTSxAUTO_BED_LEVELING_GRID_POINTS grid // and least squares solution is calculated // Note: this feature occupies 10'206 byte #ifdef AUTO_BED_LEVELING_GRID // set the rectangle in which to probe #define LEFT_PROBE_BED_POSITION 30 #define RIGHT_PROBE_BED_POSITION 200 #define BACK_PROBE_BED_POSITION 147 #define FRONT_PROBE_BED_POSITION 20 // set the number of grid points per dimension // I wouldn't see a reason to go above 3 (=9 probing points on the bed) #define AUTO_BED_LEVELING_GRID_POINTS 2 #else // not AUTO_BED_LEVELING_GRID // with no grid, just probe 3 arbitrary points. A simple cross-product // is used to estimate the plane of the print bed #define ABL_PROBE_PT_1_X 20 #define ABL_PROBE_PT_1_Y 150 #define ABL_PROBE_PT_2_X 50 #define ABL_PROBE_PT_2_Y 100 #define ABL_PROBE_PT_3_X 100 #define ABL_PROBE_PT_3_Y 75 #endif // AUTO_BED_LEVELING_GRID // these are the offsets to the probe relative to the extruder tip (Hotend - Probe) // X and Y offsets must be integers #define X_PROBE_OFFSET_FROM_EXTRUDER -6 #define Y_PROBE_OFFSET_FROM_EXTRUDER -60 #define Z_PROBE_OFFSET_FROM_EXTRUDER -1.4
I measured the X offset to be -6 mm and the Y offset to be -66 mm, however, it won't let me add -66 mm as Y-probe offset only lets me do -60 mm so I left it at -60 mm.
I re-uploaded the firmware several times but the printer will not home as it did the first time. Now the X tries to go off the bed and so does the Y like shown in the video.
My printer bed is 210x210 mm.
I now know how to manually send commands using Pronterface and would like to plead for your assistance.