Bed Mesh



  • I have a question when doing a bed mesh probe the height map file that is generated.
    My bed has X0 Y0 at the front left hand side
    I setup M557 X50:520 Y50:290 S20 and the file that is generated is as follows:
    RepRapFirmware height map file v1 generated at 2016-11-27 07:50, mean error -0.20, deviation 0.14
    xmin,xmax,ymin,ymax,radius,spacing,xnum,ynum
    50.00,520.00,50.00,290.00,-1.00,20.00,24,13
    -0.001, 0.148, 0.056, 0.072, 0.080, 0.119, 0.019, 0.098, 0.050, 0.034, 0.020, -0.034, -0.037, 0.033, 0.070, 0.020, 0.071, 0.103, 0.083, 0.097, 0.158, 0.079, -0.111, 0.161
    -0.138, -0.074, -0.170, -0.162, -0.119, -0.136, -0.101, -0.099, -0.141, -0.144, -0.107, -0.109, -0.183, -0.162, -0.161, -0.151, -0.094, -0.034, -0.084, -0.021, -0.020, -0.002, 0.007, -0.063
    -0.323, -0.334, -0.278, -0.213, -0.281, -0.256, -0.236, -0.204, -0.224, -0.272, -0.267, -0.320, -0.346, -0.187, -0.277, -0.296, -0.182, -0.226, -0.213, -0.199, -0.141, -0.202, -0.132, -0.178
    -0.191, -0.099, -0.201, -0.127, -0.232, -0.191, -0.183, -0.183, -0.227, -0.218, -0.241, -0.180, -0.264, -0.221, -0.141, -0.086, -0.159, -0.128, -0.179, -0.119, -0.101, -0.108, 0.001, -0.032
    -0.152, -0.195, -0.171, -0.158, -0.176, -0.121, -0.158, -0.202, -0.155, -0.273, -0.188, -0.160, -0.091, -0.126, -0.110, -0.060, -0.083, -0.118, -0.099, -0.025, -0.054, -0.032, 0.001, 0.059
    -0.379, -0.332, -0.293, -0.381, -0.342, -0.348, -0.382, -0.364, -0.368, -0.362, -0.331, -0.292, -0.311, -0.327, -0.348, -0.309, -0.247, -0.200, -0.249, -0.204, -0.126, -0.155, -0.181, -0.110
    -0.350, -0.321, -0.312, -0.286, -0.384, -0.214, -0.191, -0.322, -0.201, -0.273, -0.202, -0.158, -0.179, -0.242, -0.242, -0.179, -0.284, -0.179, -0.224, -0.168, -0.177, -0.139, -0.068, -0.119
    -0.351, -0.281, -0.246, -0.213, -0.197, -0.251, -0.287, -0.267, -0.208, -0.180, -0.149, -0.169, -0.220, -0.208, -0.084, -0.079, -0.071, -0.110, -0.058, -0.079, -0.051, 0.017, 0.042, -0.011
    -0.423, -0.452, -0.378, -0.421, -0.394, -0.426, -0.340, -0.361, -0.361, -0.315, -0.307, -0.291, -0.026, -0.281, -0.236, -0.236, -0.261, -0.281, -0.232, -0.250, -0.142, -0.163, -0.164, -0.199
    -0.385, -0.341, -0.422, -0.334, -0.460, -0.427, -0.436, -0.411, -0.319, -0.341, -0.386, -0.280, -0.300, -0.282, -0.194, -0.258, -0.231, -0.201, -0.137, -0.181, -0.164, -0.177, -0.091, -0.093
    -0.280, -0.351, -0.359, -0.381, -0.359, -0.401, -0.267, -0.318, -0.317, -0.272, -0.238, -0.259, -0.224, -0.319, -0.192, -0.076, -0.166, -0.129, -0.044, -0.039, 0.005, -0.024, -0.011, -0.103
    -0.347, -0.322, -0.410, -0.445, -0.415, -0.404, -0.426, -0.360, -0.373, -0.284, -0.252, -0.208, -0.216, -0.212, -0.160, -0.208, -0.163, -0.106, -0.120, -0.072, -0.071, -0.080, -0.077, -0.029
    -0.504, -0.579, -0.558, -0.611, -0.500, -0.562, -0.487, -0.504, -0.438, -0.364, -0.304, -0.380, -0.333, -0.303, -0.261, -0.292, -0.248, -0.199, -0.259, -0.227, -0.186, -0.203, -0.186, -0.186

    is the file generated with the same path as the probe. For example line 1 begins at left front to right front, line 2 begins at right to left, line 3 begins at left to right
    I know that the bed looks way out however if i measure this with an indicator i get nowhere near the errors that i am seeing on the map. I am using your differential probe to do the testing and it appears that there are some stray spikes in the file. I know that this may still be work in progress what i want to do is to correct the file for the errors that i can see and save that file as my base file.


  • administrators

    The values in each row are always in order of increasing X, so not the same order as the points are probed. The rows are in order of increasing Y.


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