Finche' mi ricordo: avevo parlato con @dnasini a proposito di una sonda economica (perche' io sono tirchio), ho comprato il fondo del barile a 8e: https://it.aliexpress.com/item/1005003664312458.html
Questo e' il test dell'accurancy:
PROBE_ACCURACY at X:85.500 Y:124.500 Z:3.973 (samples=10 retract=2.000 speed=5.0 lift_speed=5.0)
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08:27:36 // probe at 85.500,124.500 is z=1.987500
08:27:39 // probe at 85.500,124.500 is z=1.980000
08:27:42 // probe at 85.500,124.500 is z=1.982500
08:27:44 // probe at 85.500,124.500 is z=1.987500
08:27:47 // probe at 85.500,124.500 is z=1.980000
08:27:50 // probe at 85.500,124.500 is z=1.985000
08:27:52 // probe at 85.500,124.500 is z=1.990000
08:27:55 // probe at 85.500,124.500 is z=1.982500
08:27:57 // probe at 85.500,124.500 is z=1.985000
08:28:00 // probe at 85.500,124.500 is z=1.992500
08:28:00 // probe accuracy results: maximum 1.992500, minimum 1.980000, range 0.012500, average 1.985250, median 1.985000, standard deviation 0.003945