Just two Phillips screws secure the main board—twist them out, and the board floats free as if by magic in this zero-gravity photo that we totally didn't stage.

For any actual zero-gravity repairs, we recommend a magnetic project mat. Can't have any loose screws drifting into the space kitchen.

After removing the mildly glued-in button cable, we find the following on the top side of the board:

Ambiq Micro AMA3B MCU

Bosch Sensortec BMI270 3-axis accelerometer/gyroscope