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Ray stc89c52rc-40i-lqfp44: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero 84b31a2
{"orientation_deg": 0, "font_size_mm": 0.6513, "reading": {"source": "pin1_xy", "pin1_xy": [-5.662, 4.0], "dot": null}, "legible_estimate": true, "natural_up": null, "overflow": false}