It is depending on your used data rate from sensor.
If it is higher than 100Hz ODR and you want to keep all data available for host to calculation, then FIFO is good help to reduce the system power.
If you use exactly 100Hz ODR now, then FIFO have no benefit on system power consumpiton side
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DD2.0 can conly connected to our development base board (APP2.0) via USB or bluetooth interface. Then the BNO055 shuttle is inserted into APP2.0 board and talked to the UI on PC side. You can use the UI to upgrade the FW of BNO055.
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Sorry for my late. And I understand this issue's reason. This phenomenon was the behavior before calibration. It does not occur after calibration. I am solved with this Thank you for your kindly support!
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I managed to solve the problem, for anyone trying to do the same here is the solution: I used an I2C scanner and foud the device adres, in case it was :0x77 so I changed this line: iaqSensor.begin(0x77, Wire); Regards, AY
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