Gear Sensor Competition Usage Feedback

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I'm looking for feedback on actual competition usage of the gear sensors. How did they do ? If you used the manufacturers recommended circuit for noise reduction/filtering, did the sensors prove to be noise resistant (no missed state changes, false state changes). Could they be counted on for very accurate, repeatable measurements from dead stop to full rotation in autonomous mode ? Any issues keeping within the 2mm air gap requirement under with shock and gear wear/wobble etc ? Anyone find the 2mm max materially conservative or optimistic ? What did you trigger off (gears in the standard transmission, chain drive sprockets ?) We have tested them on the bench and they look promising but things could be quite different in "combat".