Need to recalibrate a "classic" (?) navx-MXP

Hello! We have (what I believe is) a “classic” navx-MXP. It looks the same as the navx2-MXP, but it doesn’t have a “reset” button. We’ve remounted the gyro upside down and we need to recalibrate it. Does anyone know how we can do that? The instructions refer to pressing the “calibrate” button (which we have) and then pressing the “reset” button, which we don’t have.

We have a classic navx and it has a reset button… are you sure you don’t have one?

Let me get a pic from our coding lead. We can see the printed area on the circuit board where it should be, and it has soldered holes where it would connect, but the button is not there. The calibrate button is there, though.

Is there any chance it broke off at some point?

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Here’s a picture of what it should look like.

Thanks @Joe_Ross for the link. Here is a pic of ours. Certainly looks like someone removed the reset button on ours for some reason!

Per the schematic and the BOM, here’s the switch: FSMSM TE Connectivity ALCOSWITCH Switches | Switches | DigiKey, although you should be able use any normally open momentary switch.

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