The ADXL345 vibration compensation sensor is used for measuring the ringing frequencies of the X-axis, Y-axis and Z-axis of the 3D printer. It inputs the data as resonance compensation parameters into the Speeder Pad to reduce ringing marks and improve printing quality.
Please note: You must update your machine to firmware version 1.4 for the ADXL sensor to function.
Watch the simple installation and user guide on using this sensor on your FLSUN V400 here