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The mocopi sensor uses an inertial measurement unit (IMU), offering greater flexibility in placement and simpler setup and calibration compared to camera- or optical-based systems. However, it may not perform optimally in certain movements and conditions. Understanding these characteristics will help you use mocopi effectively.
Very fast or very slow movements may not be captured properly
These movements may not be captured accurately. If motion exceeds the IMU’s sampling rate or is too slow for the accelerometer to detect meaningful acceleration, accurate data may not be obtained.
Perform Pause Reset and Position Reset regularly
Inertial sensors (accelerometers and gyroscopes) estimate position and orientation by integrating acceleration and angular velocity over time. As a result, drift—the gradual accumulation of small errors—can occur. To minimize drift, it is recommended to perform a Pause Reset or Position Reset for each take. If issues persist, try recalibrating.
Turn off Bluetooth and Wi-Fi when not in use
The mocopi uses Bluetooth for communication. If other Bluetooth or Wi-Fi devices operate in the same frequency band, you may experience difficulty connecting, connection instability, or dropped frames.
Reconnect sensors if mocopi is dropped
If a mocopi sensor is dropped or exposed to strong impact or rapid movement, it may exceed the sensor’s tolerance for acceleration and rotation, causing it to malfunction or produce inaccurate data. If recalibration does not resolve the issue, try reconnecting.
Keep mocopi stationary when connecting sensors
When connecting the sensors for the first time after powering on, mocopi should be completely stationary. Even small vibrations can interfere with proper gyroscope bias calibration and reduce accuracy. The gyroscope is highly sensitive and may be affected by minor vibrations, such as those from a PC fan.
https://youtu.be/22_uctEQzMg?si=QhjSXLXIfGNjsXqj
Calibration accuracy is critical
Calibration quality directly affects motion capture accuracy. Refer to the proper calibration procedure and ensure it is performed correctly for the best results.
https://youtu.be/in_DDc3qsrI?si=8yRdwOMT3he-UZol
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