Hi Guys (and girls)
Ok. I have an ANET A8 chinese knockoff and after a number of THEIR driver boards being bad, I replaced it with a standard R.A.M.P.S setup and I FINALLY got it printer "printing", The prints are very rough but they are what I told them to do so It's time to get it working withing tolerances...
After MUCH finagling, I managed to get the steps per MM down to about a .01 mm accuracy per 10mm movement. Decent! (I think)
Now, time to set up the auto bed leveling... and, I've hit a roadblock... I keep getting messages like " LEFT_PROBE_BED_POSITION can't be reached" (sub RIGHT, FORWARD or REAR as desired) When I adjust the grid settings for the leveling. I am using the A8 that ROKO SN04-4 inductive sensor. My problem is that with the values I have plugged into Marlin, the ones that don't generate an error anyway, actually test the bed far in from the edges of the bed. Not an Ideal situation. Here are some of the values I have in Marlin:
#define X_PROBE_OFFSET_FROM_EXTRUDER 18 // X offset: -left +right [of the nozzle]
#define Y_PROBE_OFFSET_FROM_EXTRUDER 56 // Y offset: -front +behind [the nozzle]
#define Z_PROBE_OFFSET_FROM_EXTRUDER 0 // Z offset: -below +above [the nozzle]
.....................
// Travel limits after homing (units are in mm)
#define X_MIN_POS 0
#define Y_MIN_POS 0
#define Z_MIN_POS 0
#define X_MAX_POS 220
#define Y_MAX_POS 220
#define Z_MAX_POS 240
...........
#if ENABLED(AUTO_BED_LEVELING_GRID)
#define LEFT_PROBE_BED_POSITION 50
#define RIGHT_PROBE_BED_POSITION 180
#define FRONT_PROBE_BED_POSITION 50
#define BACK_PROBE_BED_POSITION 150
..................
If you need to know more I will be happy to provide it.
I find myself confused by these entries. If someone could explain to me how they work that would be wonderful!
My Aim here is to have the sensor physically check the box defined with these corners:
X = 0 and 187
Y = 156 and 12
Given that information, can anyone help?
Thanks so much in advance for your help!
Don W.
Ok. I have an ANET A8 chinese knockoff and after a number of THEIR driver boards being bad, I replaced it with a standard R.A.M.P.S setup and I FINALLY got it printer "printing", The prints are very rough but they are what I told them to do so It's time to get it working withing tolerances...
After MUCH finagling, I managed to get the steps per MM down to about a .01 mm accuracy per 10mm movement. Decent! (I think)
Now, time to set up the auto bed leveling... and, I've hit a roadblock... I keep getting messages like " LEFT_PROBE_BED_POSITION can't be reached" (sub RIGHT, FORWARD or REAR as desired) When I adjust the grid settings for the leveling. I am using the A8 that ROKO SN04-4 inductive sensor. My problem is that with the values I have plugged into Marlin, the ones that don't generate an error anyway, actually test the bed far in from the edges of the bed. Not an Ideal situation. Here are some of the values I have in Marlin:
#define X_PROBE_OFFSET_FROM_EXTRUDER 18 // X offset: -left +right [of the nozzle]
#define Y_PROBE_OFFSET_FROM_EXTRUDER 56 // Y offset: -front +behind [the nozzle]
#define Z_PROBE_OFFSET_FROM_EXTRUDER 0 // Z offset: -below +above [the nozzle]
.....................
// Travel limits after homing (units are in mm)
#define X_MIN_POS 0
#define Y_MIN_POS 0
#define Z_MIN_POS 0
#define X_MAX_POS 220
#define Y_MAX_POS 220
#define Z_MAX_POS 240
...........
#if ENABLED(AUTO_BED_LEVELING_GRID)
#define LEFT_PROBE_BED_POSITION 50
#define RIGHT_PROBE_BED_POSITION 180
#define FRONT_PROBE_BED_POSITION 50
#define BACK_PROBE_BED_POSITION 150
..................
If you need to know more I will be happy to provide it.
I find myself confused by these entries. If someone could explain to me how they work that would be wonderful!
My Aim here is to have the sensor physically check the box defined with these corners:
X = 0 and 187
Y = 156 and 12
Given that information, can anyone help?
Thanks so much in advance for your help!
Don W.