Every Gen 3 Stages Power meter has a built-in gyroscope in addition to the accelerometer used to measure cadence. Within normal use, the gyroscope is not needed, as the power meter is able to measure both power and cadence using the meter's strain gauges and accelerometer. The gyroscope exists as a secondary option to improve cadence values in certain riding conditions, such as mountain biking or gravel riding in rocky/bumpy conditions.
Since the gyroscope is not needed in most riding conditions, it is disabled by default to conserve battery. To allow it to be turned on and off, we have added a feature to the Stages Power app to allow the end-user to enable the gyroscope. When activated, the gyroscope will run continuously and take measurements simultaneously with the accelerometer. With each full rotation of the crank, the cadence values will be compared between the two sensors to ensure they are both reading in unison and only good, accurate cadence values are sent on to the head unit.
Please note that using the power meter with the gyroscope enabled will result in about a 10% decrease in battery life. For this reason, we recommend leaving it off unless you are doing a significant amount of off-road riding or have noticed issues in your previous power data.
To enable or disable the gyroscope:
- Open up the Stages Power mobile app.
- Rotate your power meter crank arm at least one rotation so that it is awake and broadcasting.
- Select the power meter from the devices listing and touch Connect.
- Select the Tools page.
- Toggle the button for Enable Gyroscope to turn it on or off.
Please note that this feature is not possible for Gen 1 and Gen 2 Stages Power meters, which do not have a gyroscope within the electronic components.