建立方向盘项目初始版本

models/square_encoder_concept/SQUARE_DONE.txt

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+ok

models/square_encoder_concept/SquareOpen50_check.txt

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+CONCEPT ONLY; corners are flush to motor; no spacer under PCD76 corners.
+Support feet 0.5..3.5mm; shim 0.5mm; screw head 7mm dia x 3mm assumed; 0.2mm corner clearance.
+PCD50 screw slots open sideways outward; 45mm square frame from sketch.
+Only 0.05mm theoretical slot-end clearance in motor corner as original direct check.
+Intersections of support/shims/screw envelope with corners and rails:
+none in checked pairs
+Approx material area under 7mm screw head using 0.1mm sampled grid (mm2): 16.860, 16.860, 16.860, 16.860
+Sampled lateral slide +Y to 0:
+dy=5.0: Corner1 0.9743, Corner3 0.9743, EncoderShaft0 10.9934, EncoderShaft1 10.9934, EncoderShaft2 10.7538, EncoderShaft3 10.7538
+dy=4.5: Corner1 0.9743, Corner3 0.9743, EncoderShaft0 16.6110, EncoderShaft1 16.6110, EncoderShaft2 16.2633, EncoderShaft3 16.2633
+dy=4.0: Corner1 0.9743, Corner3 0.9743, EncoderShaft0 21.9793, EncoderShaft1 21.9793, EncoderShaft2 21.6782, EncoderShaft3 21.6782
+dy=3.5: Corner1 0.9743, Corner3 0.9743, EncoderShaft0 24.5303, EncoderShaft1 24.5303, EncoderShaft2 24.3879, EncoderShaft3 24.3879
+dy=3.0: Corner1 0.8214, Corner3 0.8214, EncoderShaft0 25.1518, EncoderShaft1 25.1518, EncoderShaft2 25.1495, EncoderShaft3 25.1495
+dy=2.5: Corner1 0.1890, Corner3 0.1890, EncoderShaft0 22.9172, EncoderShaft1 22.9172, EncoderShaft2 22.9172, EncoderShaft3 22.9172
+dy=2.0: EncoderShaft0 17.4055, EncoderShaft1 17.4055, EncoderShaft2 17.4055, EncoderShaft3 17.4055
+dy=1.5: EncoderShaft0 11.7781, EncoderShaft1 11.7781, EncoderShaft2 11.7781, EncoderShaft3 11.7781
+dy=1.0: EncoderShaft0 6.3327, EncoderShaft1 6.3327, EncoderShaft2 6.3327, EncoderShaft3 6.3327
+dy=0.5: EncoderShaft0 1.5450, EncoderShaft1 1.5450, EncoderShaft2 1.5450, EncoderShaft3 1.5450
+dy=0.0: no sampled volume overlap