X="4.5" y="3.2"/> - 2 5mm LEDs - one per step // 1 for 5v / 2.5v output mode (sw12 // 1 for run/stop (sw14) // 1 hp from side to center of package, Thorlabs photodiodes TO-46-3, Pin2 at center of hole, with a capacitor / resistor pair.
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