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BSTRobin

Hello DaveN, BMP390L temperature full accuracy range is 0--65° C. It can work below zero centigrade, but it can't guarantee the temperature accuracy same as 0--65° C.

BSTRobin

Hello Nray, Is your theory of computational mass reasonable and verified? The sensor outputs temperature and humidity according to the actual environment.

BSTRobin

Hello ZhuRan, Could you save log data with as you described your problem?

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Hello SteveF, This is official schematic of BNO055 shuttle board. You could pin 15, pin 16 were not be connected, the same with data sheet description. https://www.bosch-sensortec.com/media/boschsensortec/downloads/shuttle_board_flyer/bst-dhw-fl039.pdf For "On powering up the board, the BNO055 does not respond to I2C commands (no ACK to slave address)." Two suggestion: 1.Could you give out your schematic to check? 2.You could read chip ID in your promgrame first, and capture I2C waveform to check actual communication.

BSTRobin

Hello pete_waddy, BMA456 had more features than BMA250 and BMA400. More features needs more memory size, also provids flexibility to extend more features. Configuration file for BMA456 is an algorithm that supports different features, which is placed outside the sensor and requires MCU to load the profile. 0x5E was not standard register. The operation of 0x5E register should follow the operation format.

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